阅读说明：本技术 聚光灯系统、聚光灯、聚光灯的光学部件和确定光学部件的空间光分布的方法 (Spotlight system, spotlight, optical component of a spotlight and method for determining the spatial light distribution of an optical component ) 是由 埃尔温·梅尔兹纳 米夏埃尔·科赫 于 2021-04-02 设计创作，主要内容包括：用于照亮电影环境或舞台环境的聚光灯系统包括：用于产生光的聚光灯；和至少一个能够与聚光灯连接的光学部件,该光学部件用于产生至少一个空间光分布,其中光学部件和/或聚光灯具有存储器,在该存储器中存储关于通过光学部件可产生的空间光分布的信息。(A spotlight system for illuminating a cinema or stage environment comprising: a spotlight for generating light; and at least one optical component which can be connected to the spotlight and is used for generating at least one spatial light distribution, wherein the optical component and/or the spotlight has a memory in which information about the spatial light distribution which can be generated by the optical component is stored.)

1. A spotlight system (11) for illuminating a cinema environment or a stage environment, comprising:

a spotlight (13) for generating light (L); and at least one optical component (15) that can be connected to the spotlight (13) for generating at least one spatial light distribution (V),

wherein the optical component (15) and/or the spotlight (13) has a memory (17) in which information (I) about the spatial light distribution (V) that can be generated by the optical component (15) is stored.

2. Spotlight system (11) according to claim 1,

wherein the stored information (I) represents a spatial luminance distribution and/or a spatial color distribution or spectral distribution producible by the optical component (15); and/or

Wherein the stored information (I) represents light incident on the respective spatial point with the optical component (15) connected.

3. Spotlight system (11) according to claim 1 or 2,

wherein the spotlight system (11) has an interface (19) which is designed to output the stored information (I) or a value derived from the information (I).

4. Spotlight system (11) according to one of the preceding claims,

wherein the spatial light distribution (V) producible by the optical component (15) can be varied by setting at least one optical setting parameter (E).

5. The spotlight system (11) of claim 4,

wherein the information (I) stored comprises: -at least one first information representative of said spatial light distribution (V) producible by said optical component (15) in a first value of said optical setting parameter (E); and second information representative of the spatial light distribution (V) producible by the optical component (15) in a second value of the optical setting parameter (E).

6. Spotlight system (11) according to claim 4 or 5,

wherein the stored information (I) comprises calculation rules for determining the spatial light distribution (V) from the optical setting parameters (E).

7. Spotlight system (11) according to claim 6,

wherein the calculation rule for a plurality of spatial points (r) comprises at least one respective polynomial interpolation (F) describing a dependence of the fraction (T) of the light distribution (V) producible at the respective spatial point (r1) on the optical setting parameter (E).

8. Spotlight system (11) according to one of the preceding claims,

wherein the spotlight system (11) has a computing device (21) which is designed to determine the spatial light distribution (V) which can be generated by the optical component (15) from the information (I) stored in the memory (17).

9. The spotlight system (11) of claim 8,

wherein the computing device (21) is designed to take into account a value, in particular a brightness value or a color value, of at least one settable light parameter (P) of the spotlight system (11) when determining the spatial light distribution (V) that can be generated by the optical component (15).

10. Spotlight system (11) according to claim 8 or 9.

Wherein the spotlight (13) has a plurality of luminous bodies (25), in particular a plurality of light-emitting diodes, wherein an activation state can be set for each luminous body (25) and/or a common activation state can be set for a group of luminous bodies (25), wherein the settable activation states of each luminous body (25) comprise an on state, an off state, an on state with a selected brightness and/or an on state with a selected emission spectrum, and wherein the computing device (21) is designed to determine the spatial light distribution (V) which can be generated by the optical component (15) as a function of the set activation states of the luminous bodies (25).

11. Spotlight system (11) according to one of the claims 8 to 10,

wherein the spotlight system (11) has an interface (19) which is designed to output the calculated spatial light distribution (V).

12. Spotlight system (11) according to one of the preceding claims,

wherein the item number, serial number, semi-scattering angle and/or light intensity value of the optical component (15) are stored in the memory (17).

13. Spotlight system (11) according to one of the preceding claims,

wherein the spotlight (13) has a connecting device (29) and the optical component (15) has a connecting section (47), wherein the optical component (15) can be detachably fastened to the connecting device (29) of the spotlight (13) via the connecting section.

14. An optical component (15) for a spotlight (13) for illuminating a cinema or stage environment,

wherein the optical component (15) is designed to be connected to a spotlight (13) designed to generate light (L) and to generate at least one spatial light distribution (V),

wherein the optical component (15) has a memory (17) in which information (I) about the spatial light distribution (V) producible by the optical component (15) is stored.

15. The optical component (15) according to claim 14,

wherein the stored information (I) represents a spatial luminance distribution and/or a spatial color distribution or spectral distribution that can be generated by the optical component (15).

16. Optical component (15) according to claim 14 or 15,

wherein the optical component (15) has an interface (27) via which the memory (17) can be read.

17. Optical component (15) according to one of claims 14 to 16,

wherein the spatial light distribution (V) producible by the optical component (15) can be varied by setting an optical setting parameter (E).

18. Optical component (15) according to one of claims 14 to 17,

wherein the optical component (15) has a computing device (21) which is designed to determine the spatial light distribution (V) producible by the optical component (15) from the information (I) stored in the memory (17).

19. The optical component (15) according to claim 18,

wherein the computing device (21) is designed to receive data from the connected spotlights (13) and to take said data into account when determining the spatial light distribution (V) that can be generated.

20. Optical component (15) according to claim 18 or 19,

wherein the computing device (21) is designed to transmit the computed spatial light distribution (V) to the connected spotlight (13).

21. Optical component (15) according to one of claims 14 to 20,

wherein the item number, serial number, semi-scattering angle and/or light intensity value of the optical component (15) are stored in the memory (17).

22. A spotlight (13) for generating light (L) for illuminating a cinema environment or a stage environment,

having a connecting device (29) by means of which at least one hook-exchangeable optical component (15) for generating at least one spatial light distribution (V) can be connected to the spotlight (13), and

there is a reading device which is designed to read information (I) about the spatial light distribution (V) which can be generated by the optical component (15) from a memory (17) of the connected optical component (15).

23. The spotlight (13) according to claim 22,

wherein the spotlight (13) has an interface (27) which is designed to output the read information (I) or a value derived from the information (I).

24. The spotlight (13) according to claim 22 or 23,

wherein the spotlight (13) has a computing device (21) which is designed to determine the spatial light distribution (V) which can be generated as a function of the read information (I).

25. The spotlight (13) according to claim 24,

wherein the computing device (21) is designed to determine the spatial light distribution (V) that can be generated taking into account a value, in particular a brightness value or a color value, of at least one light setting parameter (P) of the spotlight (13).

26. The spotlight (13) according to claim 24 or 25,

wherein the spotlight (13) has a plurality of luminous bodies (25), in particular a plurality of light-emitting diodes, wherein an activation state can be set for each luminous body (25) and/or a common activation state can be set for a group of luminous bodies (25), wherein the settable activation states of each luminous body (25) comprise an on state, an off state, an on state with a selected brightness and/or an on state with a selected emission spectrum, and wherein the computing device (21) is designed to determine the spatial light distribution (V) that can be generated as a function of the set activation states of the luminous bodies (25).

27. The spotlight (13) according to any of the claims 24 to 26,

wherein the computing device (21) is designed to determine the spatial light distribution (V) that can be generated taking into account the value of at least one settable light setting parameter (E) of the connected optical component (15).

28. A spotlight (13) for generating light (L) for illuminating a cinema environment or a stage environment,

has an integrated optical component (15) for generating at least one spatial light distribution (V), and has a memory (17) in which information (I) about the spatial light distribution (V) that can be generated by the optical component (15) is stored.

29. The spotlight (13) according to claim 28,

wherein the stored information (I) represents a spatial luminance distribution and/or a spatial color distribution or spectral distribution that can be generated by the optical component (15).

30. The spotlight (13) according to claim 28 or 29,

wherein the spotlight (13) has an interface (19) which is designed to output the stored information (I) or a value derived therefrom.

31. The spotlight (13) according to any of the claims 28 to 30,

wherein the spatial light distribution (V) producible by the optical component (15) can be varied by setting at least one optical setting parameter (E).

32. The spotlight (13) according to any of the claims 28 to 31,

wherein the spotlight (13) has a computing device (21) which is connected to the memory (17) and which is designed to determine the spatial light distribution (V) which can be generated as a function of the information (I) stored in the memory (17).

33. The spotlight (13) according to claim 32,

wherein the computing device (21) is designed to determine the spatial light distribution (V) that can be generated taking into account the value of at least one settable parameter (P) of the spotlight (13), in particular taking into account the value of an optical setting parameter (E) of the optical component (15) and/or a brightness setting and/or a color setting of the spotlight (13).

34. A method for determining a spatial light distribution (V) of a spotlight system (11), the spotlight system comprising a spotlight (13) for generating light (L) for illuminating an cinema or stage environment and an exchangeable or integrated optical component (15) for generating at least one spatial light distribution (V), in particular according to one of the preceding claims,

wherein the spatial light distribution (V) is related to a set value of at least one setting parameter (E, P) of the spotlight system (11),

wherein

-determining (101) a set value of the at least one setting parameter (E, P); and

-determining (107, 115) an approximation of the spatial light distribution (V) that can be produced in the set values of the setting parameters (E, P) according to a calculation rule and/or a look-up table.

35. The method of claim 34, wherein said step of selecting said target,

wherein the at least one setting parameter comprises an optical setting parameter (E) of the optical component (15), in particular a half-scatter angle of the optical component (15); and/or

Wherein the at least one setting parameter comprises a light setting parameter (P) of the spotlight (13), in particular an activation state of a lighting device (23) of the spotlight (13), a brightness setting of the spotlight (13) and/or a color setting of the spotlight (13).

36. The method according to claim 34 or 35,

wherein determining an approximation of the spatial light distribution (V) according to the calculation rule comprises only addition, subtraction and/or multiplication.

37. The method of any one of claims 34 to 36,

wherein the look-up table comprises a plurality of approximations of a reference light distribution (Z) among a plurality of respective reference values of the setting parameters (E, P).

38. The method of any one of claims 34 to 37,

wherein the calculation rule defines a rule for interpolating between a first reference light distribution (Z1) in a first reference value (E1) of the setting parameter (E) and a second reference light distribution (Z2) in a second reference value (E2) of the setting parameter (E).

39. The method of any one of claims 34 to 38,

wherein, in a parameterization step (203), the calculation rule is determined based on at least one first reference light distribution (Z1) in a first reference value (E1) of the setting parameter (E) and at least one second reference light distribution (Z2) in a second reference value (E2) of the setting parameter (E).

40. The method of claim 39, wherein said step of selecting said target,

wherein in the parameterization step (203) respective polynomial interpolations (F) are performed for a plurality of preset or presettable spatial points (r) to parameterize the light (T) incident on the respective spatial points (r1) according to the setting parameters (E, P),

wherein interpolation parameters (ai) of the polynomial interpolation (F) are determined from the reference light distribution (Z1, Z2, Z3),

wherein the calculation rules comprise respective polynomial interpolations (F) for the plurality of spatial points (r).

41. The method of claim 39, wherein said step of selecting said target,

wherein in the parameterization step (203), the reference light distribution (Z) is divided into a plurality of wavelength ranges and for each of the wavelength ranges a respective polynomial interpolation (F) is performed for a plurality of preset or presettable spatial points (r) to parameterize the light (T) incident on the respective spatial point (r1) according to the setting parameters (E),

wherein interpolation parameters (ai) of the polynomial interpolation (F) are determined from the reference light distribution (Z1, Z2, Z3),

wherein the calculation rule comprises the respective polynomial interpolation (F) for the plurality of spatial points (r).

42. The method according to claim 40 or 41,

wherein the interpolation parameters (ai) of the polynomial interpolation (F) and the corresponding spatial points (r) are stored in a memory (17) of the optical component (15) or the spotlight (13).

43. A computer program product comprising instructions which, when executed by a computer, cause the computer to perform the method of any of claims 34 to 42.

Technical Field

The invention relates to a spotlight system for the illumination of a cinematic or stage environment, having a spotlight for generating light and having at least one optical component which can be connected to the spotlight for generating at least one spatial light distribution.

The invention also relates to: and an optical component for a spotlight for illumination of a cinema or stage environment; a spotlight for generating light for illuminating an cinema or stage environment, having a connection device by means of which at least one exchangeable optical component for generating at least one spatial light distribution can be connected to the spotlight; a spotlight for generating light for illuminating an cinema or stage environment, the spotlight having an integrated optical component for generating at least one spatial light distribution; and a method for determining the spatial light distribution of a spotlight system.

Background

Such a spotlight system may be used, for example, for illuminating a movie environment or a stage environment during the filming of a movie scene (for example in a photographic studio) or during a theatre performance. The spotlight system may comprise a spotlight having an illumination device in order to generate light of a desired brightness and color. Spotlights of the type discussed here are usually arranged in a stationary manner and are designed for generating a continuous illumination. Optical components connected or connectable with the spotlight may be provided for generating a spatial light distribution coordinated with the scene being photographed or projected. For example, when shooting a specific scene, it may be desirable to focus the light generated by the spotlight on a circular or elliptical surface in order to clearly highlight specific regions and, for example, actors in such a spotlight arrangement (Spot-Einstellung). Alternatively, it may be provided, for example, that in a Flood-lighting arrangement (Flood-Einstellung) of a spotlight system a relatively large area is illuminated uniformly and a soft transition of the illumination is produced at the edge of the illuminated area.

In order to achieve this arrangement and the transition between different spatial light distributions, the optical component may comprise, for example, a (stepped or continuous) lens, a projection lens, a (for directional or diffuse reflection) reflector, a scattering disk or a filter, which is movable relative to the lighting device or one or more luminaires of the spotlight along the optical axis of the spotlight. In particular, the reflector can be designed as a conventional mirror, wherein it is also possible for the reflector to be designed in such a way that it is divided into a plurality of segments. The possibility of arranging the optical components makes it possible to use the spotlight system flexibly and to generate different spatial light distributions, in particular also with continuous transitions, without it being necessary for the spotlight system or parts of the spotlight system to be replaced, for example. Furthermore, the spotlight can be connected to a plurality of different optical components, so that with the same spotlight, depending on the respective connected optical component and the arrangement of the optical component, various different spatial light distributions can be flexibly generated by the lamp, so that the spatial light distributions can be optimally adapted to the scene to be recorded.

Due to these numerous setting possibilities and the effect of the correspondingly generated spatial light distribution on the scene impression, there is a need to be able to obtain and collect information or data about the spatial light distribution that can be generated by the spotlight system or the optical components. In particular, these data may for example provide the possibility of improved post-processing of movie scenes in post-production. Likewise, knowledge of the spatial light distribution that can be generated by the optical components can, for example, enable a simulation of the illuminance before the start of the recording operation, so that suitable settings can already be determined in advance.

Disclosure of Invention

It is therefore an object of the present invention to create a spotlight system that can be used flexibly and versatile, which spotlight system is able to obtain, provide and exploit the feasibility of data on the spatial light distribution that can be produced by the optical components of the spotlight system.

According to a first aspect of the invention, this object is achieved by a spotlight system having the features of claim 1, and in particular the optical component and/or the spotlight has a memory in which information about the spatial light distribution that can be produced by the optical component is stored.

The optical components of the spotlight system are therefore used to generate a specific spatial light distribution from the light output by the spotlight in the state of connection to the spotlight. In this respect, the optical component determines (at least partially) the spatial distribution of the light rays generated by the spotlight or output by the spotlight system. In particular, the spatial light distribution that can be generated can be dependent on the structure of the optical components, for example the arrangement of lenses, reflectors, mirrors or filters, and on their arrangement, for example the spacing of the lenses from the luminous bodies of the spotlight. In particular, the information about the spatial light distribution producible by the optical component may accordingly correspond to the light shape characteristics of the geometry and/or the spectrum of the optical component.

By means of the memory providing information about the producible spatial light distribution, data about the actually produced or producible spatial light distribution can be determined and provided, for example, to post-production, which data is taken into account during post-processing and/or during a newly planned cinematic filming.

In general, the stored information described in the context of the different inventive aspects may directly describe the spatial light distribution that can be generated, for which purpose the spatial light distribution is stored, for example directly or parameterised (for example in the form of a Look-Up-Table Look-Up Table) in a memory, and/or the stored information may comprise calculation rules, in particular instructions and/or calculation parameters, which at least approximately enable the calculation of the spatial light distribution. The stored information may thus provide an approximation of the spatial light distribution that may actually be produced, and/or enable such an approximation to be determined computationally.

Possible embodiments of the invention can be derived from the claims, the following description and the drawings.

In order to be able to obtain data about the spatial light distribution and to be able to output data about the spatial light distribution from the spotlight system, a memory may generally be read. In particular, the memory may be a non-volatile electronic memory (e.g., EEPROM).

In some embodiments, the information may be stored in a memory of the optical component. If the optical component is connected to the spotlight, information can be transmitted to the spotlight via the interface. The spotlight may also have a computing device which is designed to determine (for example to look up and/or calculate) a producible or generated spatial light distribution from the transmitted information and which may be designed in particular as a microprocessor. The determined result may then be forwarded outwards via another interface of the spotlight, for example to an external data collection device, so that data about the spatial light distribution can be used for further steps of the processing. The output of the calculated spatial light distribution outwards may be done wirelessly or wired. The information itself or other data stored in the memory may also be transferred out via the interface.

Alternatively or additionally, the optical component itself may comprise, for example, a computing device designed to determine the spatial light distribution producible or generated by the optical component from information stored in a memory of the optical component. The determined spatial light distribution within the optical component can then be transmitted to a spotlight, for example, via an interface, and provided by the spotlight in a readable manner via a further interface, in order to be able to take this spatial light distribution into account in post-production or in a preliminary simulation. It is also possible for data describing the spatial light distribution that can be generated to be transmitted directly from the optical component to the outside via the interface.

In principle, possible determinations of the producible spatial light distribution can also be made in a plurality of steps from the stored information, so that both the optical component and the spotlight can have corresponding computing devices. In this case, a first result determined by the computing device of the optical component can be transmitted via the interface to the spotlight, wherein the computing device of the spotlight can be designed to determine the spatial light distribution that can be generated as a function of this first result. The spatial light distribution determined by the computing device of the spotlight may then be output outwards via the interface (in particular, the further interface).

It may furthermore be provided that information from the memory of the optical component is merely forwarded out via the interface without further determination or calculation of the spatial light distribution within the spotlight system. The above features may for example be provided if the stored information can directly describe the producible spatial light distribution, for example in the form of a look-up table, and the data describing the spatial light distribution can thus be provided without additional calculation steps. It is also possible for the calculation for determining the spatial light distribution from the information transmitted to the outside via the interface to be carried out by an external device, wherein for example a transmission to a mobile communication device or smartphone with a light planning application (lichtplankings-App) or a light evaluation application (lichtausverte-App) or to a central device for collecting and processing metadata can be provided. The interface may be arranged on the optical component or it may be provided that the information is first transmitted to the spotlight via the first interface and subsequently transmitted outwards via the second interface.

The memory with information about the spatial light distribution producible by the optical component may also be part of a spotlight. The spotlight may have, for example, a detection device or a selection device, by means of which the respective connected optical component can be automatically recognized or the selected optical component can be input by the user. For automatic detection, the connectable optical component can have a correspondingly readable code, for example, which enables the optical component to be identified when it is connected to the spotlight. The respective information about the spatial light distribution producible by the optical components for the plurality of connectable optical components can be stored in a memory of the spotlight, so that after the identification or selection of a connected optical component the respective information can be extracted from the memory. On the other hand, the information may be used, for example, by a computing device of a spotlight to determine the producible or generated spatial light distribution, or the information itself may directly describe the producible spatial light distribution. The possible calculated light distribution as well as the stored information itself may be transmitted to an external device via the interface of the spotlight.

Irrespective of the above-described embodiments and the arrangement of the memory, a spotlight system having a memory in which information about the producible spatial light distribution is stored is therefore generally able to determine the producible or generated spatial light distribution and to provide corresponding data for further processing or consideration. Specially for treating diabetesOther characteristics of the optical components of the spotlight system, such as their serial number or item number, can be stored in the memory to be able to forward as complete and comprehensive light data as possible. And, for example, the optical intensity to luminous flux magnification factor of the optical component: (-zu-Lichtstrom-) Data of temperature measurements of the key components, spatial position of the light influencing device and/or dimensions of the optical component or the light exit face can be stored in a memory and can thus be retrieved.

In general, the producible spatial light distribution can be transferred together with other data transmitted out by the spotlight system in a common data set, so that as complete light data as possible can be provided to the post-production. In principle, it may be provided first that the light distribution data is transmitted in the EULUMDAT format (with file extension LTD or IES) or similar. In order to be able to transmit other metadata (e.g. temperature measurements or serial numbers of optical components as explained) together with such light distribution data in a common data set, the EULUMDAT data (in particular in a more general data format) may be combined with other metadata. For example, data compilation in a material exchange format (file extension. MFX) may be provided to simplify further processing.

In some embodiments, it may be provided that the stored information represents a spatial luminance distribution and/or a spatial color or spectral distribution producible by the optical component. For example, the information may describe light incident on the respective spatial point in the case of the optical component connection. To this end, the stored information may comprise, for example, a look-up table associating respective luminance values with a plurality of preset or presettable spatial points, the luminance values representing light incident on the spatial points. Furthermore, such a look-up table may be created, for example, for different wavelength ranges of light (i.e. for different spectral ranges or regions in a color space) so that the spatial color or spectral distribution that can be generated can be determined from this information. In particular, possible changes in the emission spectrum of the spotlight system caused by the optical components or possible changes in the color of the light generated by the spotlight system caused by the optical components are also recognizable or positionable on the basis of the information about the spatial color or spectral distribution that can be generated, so that such changes can be taken into account, for example, in setting the lighting device of the spotlight or spotlight. In addition to the look-up table, it can also be provided that the stored information comprises calculation rules, according to which the producible spatial light distribution, in particular the spatial luminance respectively and/or the spatial color distribution or the spectral distribution, can be calculated.

To represent the spatial color distribution, the stored information may enable associating color coordinates in the color space with different spatial points. For example, to this end, the information may comprise a look-up table which associates respective coordinates of the (in particular three-dimensional) color space with a plurality of spatial points. Thus, a color coordinate in the color space may be associated with each spatial point, such that the spatial color distribution is derived from the look-up table. Here, the color coordinates in the three-dimensional color space can already be determined sufficiently by only two coordinates, so that the look-up table, for example, only has to contain x and y coordinates, wherein the third coordinate (z-coordinate) is determined in a computational manner. Optionally, three coordinates (x, y and z coordinates) of the three-dimensional color space may also be contained in the look-up table. Instead of a look-up table, the stored information may also comprise corresponding calculation rules to determine the spatial color distribution.

Thus, a spatial color distribution in the sense of the present disclosure describes a spatial distribution of color values or color coordinates. Thereby, one or more values are assigned to different points in space, the one or more values representing the color of light incident on the point. In contrast, the specific spectral resolution of the incident light is not achieved by the spatial color distribution. In this respect, the spatial color distribution can be understood as a simplification of the spatial spectral distribution. However, the spatial color distribution may also comprise a spatial luminance distribution.

For the purposes of the present disclosure, a spatial spectral distribution describes not only spatially (in terms of a plurality of spatial points), but also spectrally resolved the spatial light distribution that can be generated, so that wavelength-dependent information (relative distribution or absolute values; for example with respect to the light intensity) with respect to the amount of light is present for one or more wavelength ranges with respect to the respective spatial point. Thus, in this regard, the spatial spectral distribution includes expanded or more accurate information as compared to the spatial color distribution.

Furthermore, the stored information may represent a semi-scattering angle, a tenth scattering angle, a beam angle or a reflection angle of the optical component or similar characteristics of the optical component. Such information may also enable, at least approximately, the determination of the producible spatial light distribution of the optical component and approximately take into account the producible spatial light distribution in further steps of the later production.

In some embodiments, the stored information may parametrically describe the spatial light distribution that is measured and that can be generated by the optical component. For example, in particular in a calibration step on the factory side, the spatial luminance distribution can be measured when the optical component is connected to a spotlight and stored in the memory in the form of a value tuple consisting of spatial points and measured luminance values or a look-up table. Furthermore, such a measured spatial light distribution can be parameterized as a function, for example by means of fitting, and the determined parameter values and the function associations are stored as information in a memory.

In some embodiments, the spotlight system may have an interface which is designed to output stored information or values derived therefrom. In particular, such an interface, which may be designed as an electronic interface, may make it possible to forward stored information or, for example, calculation results outward to approximate the producible spatial light distribution, so that the acquired data about the spatial light distribution may be used. Thereby, both wired and wireless transmission can be provided. Such an interface in the context of the present invention may comprise, for example, an electrical plug, an electrical socket, a radio transmitter or a radio transmitting/receiving unit, in particular together with an associated controller for controlling the communication or for signal conversion. In particular, a transmission to or reading by a central data collection device can be provided, where, for example, further data on the devices participating in the recording can also be collected in order to create metadata that is as comprehensive as possible. The interface can be designed on the spotlight or on the optical component.

In some embodiments, the spatial light distribution producible by the optical component can be varied by setting at least one optical setting parameter. For example, the optical component may comprise a (stepped) lens, reflector or mirror, which may be moved relative to the spotlight or the lighting device of the spotlight, wherein for example the semi-scattering angle of the optical component may be varied depending on the spacing. It may thereby be provided that the stored information comprises a description of the producible spatial light distribution in relation to the variable values of the optical setting parameters, so that a corresponding spatial light distribution producible in a particular value of the optical setting parameters of such a flexibly usable optical component may be determined. The set value of the optical setting parameter can thus be measured, for example, by means of a sensor arranged on the spotlight or on the optical component, wherein, for example, the measured distance between the (stepped) lens of the spotlight and the illuminant can be converted into the semi-scattering angle, and the semi-scattering angle can be taken into account as the optical setting parameter. The setting of the at least one optical setting parameter can generally be carried out by means of a manually operable adjustment device (i.e. manually), or by means of an electrically controllable adjustment device (e.g. an electric motor).

In principle, the stored information may comprise a description of the direct dependence of the producible spatial light distribution on parameters such as the proposed spacing of the (stepped) lens to the luminaire of the spotlight or the spacing of a plurality of lenses of the optical component from one another. It is therefore not necessary to first convert such optical setup parameters directly related to the setup of the optical component into the characteristic angles derived from the setup. In this respect, in the sense of the present disclosure, if the values of the optical setting parameters are not used directly, for example in the calculation of the producible spatial light distribution, or are not retrieved in a look-up table, but the optical setting parameters acting on the half-scatter angle are determined and used for determining the spatial light distribution, the half-scatter angle is also taken into account as optical setting parameters in principle. In particular, the distances mentioned between the optical elements of the optical component or from the optical elements of the optical component to the illumination device are thereby taken into account.

It may be provided that the stored information comprises: at least one first information item representing a spatial light distribution producible by the optical component in a first value of the optical setting parameter; and second information representing a spatial light distribution producible by the optical component in the second value of the optical setting parameter. For example, the information may comprise at least one respective parameterization of the spatial light distribution measured in the first and second values of the optical setting parameter and producible by the optical component. In particular, thereby, for discrete values of the optical setting parameter, a respective look-up table with spatial points and light incident on the spatial points may be stored to be able to determine the spatial light distribution in the respective values of the optical setting parameter. Thus, for discrete settable optical components, such a table may be stored for each settable value of an optical setting parameter. In the case of a continuously variable optical component, it can be provided, for example, that the spatial light distribution producible in a particular value is approximated by a measured spatial light distribution measured at a value closest to the actually set or selected optical setting parameter.

In some embodiments, the stored information comprises calculation rules for determining the spatial light distribution from the set values of the optical setting parameters. In particular, such a calculation rule may enable a generable spatial light distribution in values of the optical setting parameter between a first value and a second value of the optical setting parameter to be determined as an approximation, wherein the respective generable light distribution in the first value and the second value of the optical setting parameter may be measured. The calculation rule may thus define a rule for interpolating between two spatial light distributions measured in the respective values of the optical setting parameters, wherein for example a simple linear interpolation between the first and second spatial light distributions or the respective measured spatial light distributions may be provided. In particular, this may enable a very fast determination and a real-time provision of data on the spatial light distribution. Furthermore, it may be provided that the calculation rules enable a determination of the producible spatial light distribution on the basis of one or more physical models.

Furthermore, in some embodiments, the calculation rule for a plurality of spatial points comprises at least one respective polynomial interpolation describing a dependence of the contribution of the light distribution that can be generated at the respective spatial point on the value of the optical setting parameter. In particular, therefore, the spatial light distribution measured in different values of the optical setting parameters can be used as nodes for polynomial interpolation, wherein by means of such polynomial interpolation a reliable approximation of the spatial light distribution can be provided from the optical setting parameters with suitable computational effort and without having to employ complex physical models. In particular, the polynomial interpolation or its parameters have been determined in a calibration step or a parameterization step on the plant side and stored in a memory together with the corresponding spatial points, so that the calculation step and the time consumption associated therewith need only be performed once and, in particular, need not be performed by the user of the spotlight system himself.

Furthermore, it may be provided that the calculation rule for a plurality of spatial points comprises a respective plurality of polynomial interpolations, wherein a respective polynomial interpolation describes a dependence of the light distribution at a respective spatial point in a specific wavelength range on the value of the optical setting parameter. This may enable a determination of the spatial color distribution or the spatial spectral distribution associated with the optical setting parameters from the plurality of polynomial interpolations and to use the obtained data in further steps of the film production, in particular the post-production.

In some embodiments, the spotlight system has a computing device which is designed to determine, at least approximately, the spatial light distribution producible by the optical component from the information stored in the memory. Thus, the computing device, for example as a microprocessor, can be part of a spotlight or of an optical component, wherein in principle also a multi-stage determination can be provided and the computing device can be distributed over the spotlight and the optical component. The memory may be connected or connectable with the computing device, respectively, such that information stored in the memory may be provided to the computing device. In particular, a computing device belonging to the spotlight may be connected to the memory, wherein the connection may be made automatically, for example, after the optical component is connected to the spotlight. Furthermore, it can also be provided that the external device has a computing device which can be connected to a spotlight system, in particular a spotlight, in order to read the memory. Such external computing means may be provided, for example, as part of a light planning application, which may be executed, for example, by a mobile communication electrical device or a smartphone.

It may be provided that the computing device is designed to take into account the value of at least one settable light parameter of the spotlight system when determining the spatial light distribution producible by the optical component. In particular, the computing device may be designed to take into account settable values of optical setting parameters of the optical component, such as the half-scatter angle, when determining the spatial light distribution producible by the optical component. Thus, when determining the spatial light distribution, the computing device may for example employ the already proposed polynomial interpolation to approximate the fraction of light incident on the respective spatial point in accordance with the optical setting parameter, and for a plurality of spatial points the respective values of the optical setting parameter are inserted into the respective polynomial interpolation in order to determine an approximation of the spatial light distribution resulting in that value of the optical setting parameter. Alternatively, the calculation means may for example be designed to interpolate between the respective measured reference light distributions in order to determine an approximation of the spatial light distribution in a particular value of the optical setting parameter. In particular, it may be provided that the computing means for determining an approximation of the producible or generated spatial light distribution perform only additions and/or subtractions, so that a fast and simple determination, in particular in real time, is possible.

Furthermore, the settable parameters may relate to the setting of a spotlight or of the lighting means of a spotlight, in particular to the brightness or color producible by a spotlight, the computing means being able to carry out the determination of the producible spatial light distribution taking into account the settable parameters. To adapt such a setting, the spotlight may have a controllable lighting device. For example, depending on the control of such a lighting device, a spotlight may be designed to generate light only by means of a selection of a plurality of luminous bodies or to generate light of different colors, so that the color or spectral distribution of the space that can be generated by means of the spotlight system by means of the optical components can be varied depending on the setting of the lighting device. The set values of such light setting parameters can therefore be taken into account in determining the producible spatial light distribution, so that data can be obtained and forwarded as accurately as possible.

In some embodiments, the spotlight may have a plurality of luminous bodies, in particular a plurality of light-emitting diodes, wherein an activation state can be set for each luminous body and/or a common activation state can be set for a group of luminous bodies, wherein the settable activation states of each luminous body may comprise, for example, an on state, an off state, an on state with a selected (higher or lower) brightness and/or an on state with a selected emission spectrum, and wherein the computing device may be designed to determine the spatial light distribution producible by the optical component depending on the set activation states of the luminous bodies.

In such spotlights, the emission spectrum can be influenced spatially indirectly by switching on a particular selection of the luminaires while switching off the other luminaires. . This arrangement of the spotlight can thus directly influence the spatial light distribution that can be generated by the optical component. Furthermore, in particular, the spatial color or spectral distribution that can be generated can be correlated with the respective emission spectrum of the individual luminous bodies. By designing the computing device such that the setting of the spotlight is taken into account when determining the spatial light distribution, it is thus possible, for example, to determine as precise data as possible about the spatial light distribution that can actually be generated and, for example, take this data into account in post-production. In principle, each luminous body can thus be controlled individually and can be brought into a desired activation state, while it is also possible for the luminous bodies of the lighting device to be arranged in groups, wherein a common activation state can be set for the luminous bodies of a group. Such a group of luminaires may comprise, for example, a plurality or all luminaires of the same color channel, and/or all luminaires of a (co-controlled) series circuit or a parallel circuit.

In some embodiments, the spotlight system may have an interface designed to output the calculated spatial light distribution, in particular wirelessly or by wire.

In particular, the determination of the spatial light distribution that can be generated or generated can be carried out according to the methods which are also set forth below individually.

In some embodiments, the item number, serial number, semi-scattering angle, and/or light intensity value of the optical component may be stored in memory. Thus, in addition to information about the spatial light distribution that can be generated, the memory may also contain other data, so that as complete light data as possible about the spotlight system and in particular the connectable optical components can be provided. In particular, if a determination of the producible spatial light distribution is made within the spotlight system and the result of the determination is transmitted outwards, the memory can be read via one or more interfaces and subsequently also directly by an external device.

Furthermore, the stored information may comprise a color-adapted spatial distribution which may be generated by means of the optical component. Thus, not only information about the spatial color or spectral distribution that can be produced can be stored in the memory, but also possible color adaptations or changes in the emission spectrum of the spotlight can be traced back in the case of connecting optical components. Knowledge about such color variations, which may also have a spatial dependency, for example caused by the reflection properties of the optical components, makes it possible to carry out a correction by an adapted setting of the spotlight before the recording in order to obtain the desired color distribution.

In some embodiments, the spotlight may have a connection device and the optical component may have a connection section, wherein the optical component can be detachably fastened to the connection device of the spotlight via the connection section. For example, the connecting device can have a plug connector, a rotary connector, a plug-in rotary connector and/or a sliding connector, wherein the connecting section can have a counterpart. Likewise, the reverse design of the connection device and the connection section is also possible. Thereby, a form fit and/or force fit may be provided between the connecting device and the connecting section. A reliable mechanical connection between the spotlight and the optical component can be produced by means of such a connecting device and such a connecting section.

Furthermore, the spotlight system may comprise a plurality of different optical components, one of which may be selectively connected with the spotlight. In particular, the above-described connecting device may be provided for quickly and flexibly connecting selected optical components with a spotlight to be able to generate a desired spatial light distribution. The spatial light distribution producible by the connected optical component can thus be determined from the stored information and can be provided, for example, for post-production.

According to a further aspect, the invention relates to an optical component for a spotlight for illuminating a cinema or stage environment, wherein the optical component is designed to be connected to a spotlight designed for generating light and to generate at least one spatial light distribution, wherein the optical component has a memory in which information about the spatial light distribution producible by the optical component is stored.

Thus, as explained above for a spotlight system, such an optical component achieves that, when connected to a spotlight, the spatial light distribution generated by the optical component is determined from the information stored in the memory. Thus, in particular, such an optical component may directly or indirectly provide data regarding the spatial light distribution that is desired for post-production.

Thus, the stored information may represent a spatial luminance distribution and/or a spatial color or spectral distribution that may be produced by the optical component.

In some embodiments, the optical component may have an interface via which the memory may be read. In particular, such an interface can be designed to establish a connection between the memory and a device arranged within the spotlight, for example a computing device for determining the producible spatial light distribution from this information, when the optical component is connected to the spotlight. Furthermore, an interface may be provided, in which the information stored in the memory or values derived from this information can be transmitted to the outside, for example to an external data collection device, directly or via a spotlight and a further interface.

In some embodiments, the spatial light distribution producible by the optical component can be varied by setting the values of the optical setting parameters. In particular, the half-scattering angle of the optical component can be varied thereby, for which purpose, for example, the distance of the (stepped) lens of the optical component from the luminous body of the spotlight can be adapted in the connected state. For this purpose, the optical component and/or the spotlight may have an adjusting device, which may be manually operable or may be controlled via a control device of the spotlight or of the optical component. Furthermore, this information may comprise, for example, calculation rules for determining the producible spatial light distribution from the optical setting parameters, as already explained above in connection with the spotlight system.

In some embodiments, the optical component may have a computing device which is designed to determine, at least approximately, the spatial light distribution producible by the optical component from the information stored in the memory. In particular, the calculation device can be designed to determine the producible spatial light distribution as a function of variable values of the optical setting parameters of the optical component, in particular as a function of the half-scatter angle. Thus, the information may for example comprise an approximation of the producible spatial light distribution in relation to the optical setting parameters, in particular polynomial interpolation which has been proposed, from which the determination can be made by the computing means.

Furthermore, in some embodiments, the computing device may be designed to receive data from the connected spotlights and to take this data into account when determining the producible spatial light distribution. For example, the connected optical components may receive data from or exchange data with a spotlight via the interface, so that in the determination of the generable spatial light distribution, for example, the brightness setting or the color setting of the spotlight may be taken into account.

The calculation means may be designed to transmit the calculated spatial light distribution to a connected spotlight. In particular, this can also be done via the already proposed interface. Thus, firstly, the spatial light distribution that can be generated or its determination can be transmitted from the optical component to the connected spotlight and thus be derived from the optical component. The spatial light distribution that can be generated is thereby transmitted, for example, together with further data of the common data set that are transmitted from the spotlight to the outside. In particular, light distribution data transmitted in the EULUMDAT format or similar may be combined with other data in a more comprehensive data format, such as the material exchange format (MXF). It may furthermore be provided that the calculated spatial light distribution may be transmitted directly to an external device via an interface.

In some embodiments, the optical component may have a connection section via which the optical component is detachably fixed on the spotlight. This makes it possible for the optical component to be used flexibly as a variable optical device with different spotlights and, for example, also as a borrowing deviceProvision is made for the respective producible spatial light distribution to be retrievable by means of the information stored in the memory at any time and for each spotlight.

In some embodiments, the item number, serial number, semi-scattering angle, and/or light intensity value of the optical component may be stored in memory. And thus may also provide such data.

The embodiments and applications of the optical component described above in relation to a spotlight system are also possible for the optical component claimed separately.

Furthermore, according to a further aspect, the invention also relates generally to an optical component for a spotlight for illuminating a cinema environment or a stage environment, wherein the optical component is designed to be connected to a spotlight designed to generate light, wherein the connecting component has a memory in which an item number, a serial number, a semi-scattering angle and/or a light intensity value of the optical component are stored. The readable memory does not therefore have to be used for storing information about the spatial light distribution that can be generated by the optical component, but alternatively or additionally also other information can be recorded and described. In particular, this can be advantageous in the case of an optical component used as a change optic for a spotlight, in order to be able to provide data about the respective connected optical component. The optical component embodiments and applications (e.g., design of memory and interface) described above with respect to spotlight systems are also generally feasible for such optical components.

Furthermore, according to a further aspect, the invention relates to a spotlight for generating light for illuminating a cinema or stage environment, which spotlight has a connection device by means of which at least one exchangeable optical component for generating at least one spatial light distribution can be connected to the spotlight, and which spotlight has a reading device which is designed to read information about the spatial light distribution producible by the optical component from a memory of the connected optical component.

Such a spotlight makes it possible to determine the spatial light distribution producible by the connectable optical component on the basis of the information stored in the memory of the optical component, in particular by reading from the memory via a reading device, so that the determined light distribution can be taken into account in further steps of the film shooting or processing. The spotlight may thus be equipped, for example, with a computing device to which information stored in a memory of the optical component can be provided and which may be designed to determine, from the transmitted information, a respective generable spatial light distribution for a plurality of optical components which are selectively connected to the spotlight. The reading device may comprise, for example, an electrical plug, an electrical socket or a radio receiver, in particular together with an associated controller for communication control or for signal conversion.

It can thus be provided that the spotlight has an interface which is designed to output the read information or a value derived from this information. Therefore, the read information or a value derived from the information, such as a calculation result, may be output to the outside or to an external device.

In some embodiments, the spotlight may, as already mentioned, have a computing device which is designed to determine the producible spatial light distribution at least approximately from the read information. For example, the information may include calculation rules according to which the computing device may perform calculations. In particular, the above approximation may be employed, including, for example, polynomial interpolation.

Furthermore, the computing device may be designed to determine the spatial light distribution that can be generated taking into account the value, in particular the brightness value or the color value, of at least one light setting parameter of the spotlight. Accordingly, in addition to the connected optical components, the influence of the setting of the spotlight on the spatial light distribution that can be generated can also be taken into account in the determination.

The spotlight may have an illumination device. In some embodiments, the spotlight or the lighting device of the spotlight may have a plurality of luminous bodies, in particular a plurality of light-emitting diodes, wherein an activation state may be set for each luminous body and/or a common activation state may be set for a group of luminous bodies, wherein the settable activation states of each luminous body comprise an on state, an off state, an on state with a selected brightness and/or an on state with a selected emission spectrum, and wherein the computing device may be designed to determine the producible spatial light distribution depending on the set activation states of the luminous bodies. In particular, by means of the plurality of luminous bodies, it is already possible to generate variable light from the spotlight itself, whereby the spatial light distribution that can be generated can also be influenced accordingly when the optical component is connected to the spotlight. Thus, taking into account the set activation state of the luminous bodies, it is possible to obtain as accurate data as possible regarding the resulting or producible spatial light distribution for such flexibly settable types of spotlights.

Furthermore, the computing device can be designed to determine the producible spatial light distribution taking into account the settable value of at least one light setting parameter of the connected optical component. For this purpose, the spotlight may have a sensor, for example, by means of which the value of an optical setting parameter of the connected optical component can be determined. For example, the distance of the (stepped) lens or reflector from the illuminant of the spotlight can be measured by means of the sensor and the respective semi-scattering angle of the connected optical arrangement determined therefrom, so that this semi-scattering angle or the measured distance can be taken into account as an optical setting parameter in the determination of the producible spatial light distribution.

The embodiments and applications of the spotlight described above in connection with spotlight systems are generally also feasible for the above-mentioned individually claimed spotlights.

According to a further aspect, the invention also relates to a spotlight for generating light for illuminating a cinema or stage environment, which spotlight has a connection device by means of which at least one exchangeable optical component for generating at least one spatial light distribution can be connected to the spotlight, and which spotlight has a memory in which information about the spatial light distribution that can be generated by the optical component is stored.

In particular, corresponding information about the producible spatial light distribution for a plurality of connectable optical components can be stored in the memory. Thereby, the respective connected optical component may be identified such that information associated with the connected optical component may be read to determine the spatial light distribution.

For this purpose, the spotlight may have a detection device, for example, which is designed to identify the connected optical component. Such automatic recognition may enable the selection of information from the memory about the spatial light distribution that can be generated, which is associated with the respective connected optical component. For this purpose, the optical component can be provided, for example, with a code which can be read automatically by the detection device when the optical component is connected to the spotlight. Alternatively or additionally, such spotlights may have a selection device, by means of which a user can select the respective connected optical component. Thereby, reading information associated with the optical component from the memory may also be achieved.

The embodiments and applications described in the context of a spotlight system and in the context of a spotlight with a reading device are also generally feasible for such spotlights with a memory.

Furthermore, according to another aspect, the invention relates to a spotlight for generating light for illuminating a cinema environment or a stage environment, which spotlight has an integrated optical component for generating at least one spatial light distribution, and which spotlight has a memory in which information about the spatial light distribution producible by the optical component is stored. The optical component is here firmly integrated into the spotlight or fixed to the spotlight. Even in such spotlights without changing the optical arrangement or optional connectable or detachable optical components, the spatial light distribution producible by the optical components can be determined from the stored information and data about the spatial light distribution can be provided.

Thus, the stored information may represent a spatial luminance distribution and/or a spatial color or spectral distribution that may be produced by the optical component.

Furthermore, the spotlight may have an interface which is designed to output stored information or values derived from this information. Thus, the light data set may be output from the spotlight via such an interface.

In principle, it can be provided that the spatial light distribution producible by the optical components of the spotlight is permanently fixed, in addition to the possible settings of the spotlight (for example the brightness or color of the spotlight). Alternatively, it may be provided in some embodiments that the spatial light distribution producible by the optical component can be changed by setting at least one optical setting parameter. Thereby, the stored information may comprise calculation rules for determining the producible spatial light distribution depending on the set values of the optical setting parameters. Such spotlights with integrated optical components can therefore also be arranged to produce different spatial light distributions in a targeted manner and as desired, and to switch between, for example, a spotlight setting and a floodlight setting. The stored information or the calculation rules can thus make it possible to determine the actually generated or producible spatial light distribution for such spotlights with integrated optical components in each selectable setting.

In some embodiments, the spotlight may have a computing device connected to the memory, which computing device is designed to determine the producible spatial light distribution from the information stored in the memory. Thereby, the information may in particular comprise calculation rules for calculating the spatial light distribution, e.g. based on a physical model.

Furthermore, in some embodiments, the computing device may be designed to determine the producible spatial light distribution taking into account the value of at least one settable parameter of the spotlight, in particular taking into account the value of an optical setting parameter of the optical component and/or the value of an optical setting parameter of the spotlight (such as a brightness setting and/or a color setting). In particular, the spotlight may have a lighting device, wherein the brightness setting and/or the color setting of the lighting device may be taken into account by the computing device. Furthermore, the calculation device can be designed to take into account, for example, the variable semi-scattering angle of the optical component when making the determination. To this end, the information may comprise, for example, a calculation rule or approximation of the producible spatial light distribution in relation to the parameter to be considered.

The spotlight may have a lighting device, which may in particular comprise a plurality of luminous bodies. In particular, the spotlight may have a controllable lighting device. The lighting device can thus have in particular a plurality of luminous bodies, in particular a plurality of light-emitting diodes. The setting or activation state of the lighting device may also be taken into account when determining the spatial light distribution.

The embodiments and applications of the spotlight described in the context of a spotlight system and of the optical element described in the context of a spotlight system are generally also feasible for spotlights with integrated optical components.

According to another aspect, the invention relates to a method for determining an spatial light distribution of a spotlight system, the spotlight system comprising, in particular as disclosed herein, a spotlight for generating light for illuminating an cinema environment or a stage environment and an optical component for generating at least one spatial light distribution, wherein the spatial light distribution is related to a value of a setting of at least one setting parameter of the spotlight system, wherein the value of the setting of the at least one setting parameter is determined; and wherein an approximation of the spatial light distribution producible in the set values of the setting parameters is determined according to a calculation rule and/or a look-up table.

In this method, the optical components can be replaceable or integrated in a spotlight, the monetary loyalty being as explained for the different embodiments. In both cases, reference is now made to "spotlight systems" for the sake of simplicity.

Thus, determining the value of the setting parameter may comprise, for example, reading from a sensor, from a signal input or from a memory. In principle, however, this determination can also be made by identifying values set in a simulation program for simulating the producible spatial light distribution, or by identifying values set by a spotlight or a control device of the optical component.

Thus, with the aid of this method, an approximation of the actual spatial light distribution that is or can be generated can be determined. Such an approximation may be performed, for example, by calculation, wherein the accuracy of the approximation may be dependent, for example, on the calculation rules used or on the possible parameter values used. Furthermore, the spatial light distribution read directly from the look-up table can also be understood as an approximation in the following way: i.e. such a table may for example comprise discrete points in space, with which a certain fraction of the light distribution is associated. In principle, such a look-up table may be adapted to describe the real spatial light distribution in a predetermined statistical heap (binning), i.e. in a predetermined discrete value distribution, whereby an approximation of the real spatial light distribution, which is continuous in principle, is made by the statistical heap.

Such a look-up table may be created and stored, for example, in a calibration step preceding the method claimed herein, based on measurements of the spatial light distribution producible by the optical component. In particular, the determination of the approximation according to the calculation rule can thus be provided for determining a corresponding spatial light distribution in such a plurality of spatial light distributions, which can be dynamically varied according to the setting parameters in order to achieve a so-called tapering (Morphing) between these light distributions. The calculation rule may thus be based on a plurality of, for example, measured reference light distributions, and for values of the setting parameter between reference values associated with the reference light distributions, an approximation of the spatial light distribution is achieved by a gradual change between these reference light distributions. Thus, data about the spatial light distribution that can be generated can be determined in any value of the setting parameter.

The approximate or approximated result may be transmitted to an external device, for example to a central data collection device, or stored in such a device. Thus, in particular, the approximation may be transmitted in the EULUMDAT format or similar, or the approximation may be transmitted in a more comprehensive data format, such as the material exchange format (MXF), in a common data set with other optical data. Accordingly, during the film shooting, the acquired light data may be continued to be processed or considered in further processing steps.

On the other hand, the spatial light distribution may represent a spatial luminance distribution and/or a spatial color or spectral distribution.

In some embodiments, the at least one setting parameter may comprise an optical setting parameter of the optical component, in particular a half-scatter angle of the optical component; and/or, the at least one setting parameter may comprise a light setting parameter of the spotlight or of the lighting arrangement of the spotlight, in particular an activation state of the lighting arrangement of the spotlight, a brightness setting of the spotlight and/or a color setting of the spotlight. In particular, the calculation rule may thereby enable a gradual change between the light distributions for different values of such setting parameters.

On the other hand, the setting parameters may also include optical setting parameters which directly relate to the setting of the optical components and, for example, the spacing of two lenses from one another or the spacing of at least one optical element (such as a lens or a reflector) to the lighting device of the spotlight. In particular, a characteristic angle of the optical component (for example a half-scattering angle, and/or a tenth-scattering angle, and/or a "beam angle" or a reflection angle) is determined or determinable by such optical setting parameters, in particular the pitch values, so that the dependence of the spatial light distribution on such characteristic angle can also be described thereby. Furthermore, in addition to approximating the spatial light distribution in a particular arrangement of optical components, one or more characteristic angles may be calculated and output in a common data set.

In addition, the setting parameters may include an identification of the attached, replaceable optic. In this way, a respective connected optical component can be identified from the plurality of connectable optical components and an approximation of the spatial light distribution producible by the connected optical component can be determined. For example, the readable memory may comprise a respective look-up table for a plurality or each connectable optical component.

In some embodiments, determining an approximation of the spatial light distribution according to the calculation rule may comprise only addition, subtraction and/or multiplication. Thus, such calculation rules (for example, unlike division) enable an extremely simple determination of the approximation, so that the required calculation steps can be performed quickly and the approximation can be provided in real time.

In some embodiments, the look-up table may comprise a plurality of approximations for the reference light distribution among a plurality of respective reference values of the setting parameter. In particular, in a previous calibration step, a reference light distribution can be measured in different values of the setting parameters, which can then be stored in a table form and finally recalled.

In some embodiments, the calculation rule defines a rule for interpolating between a first reference light distribution in a first reference value of the setting parameter and a second reference light distribution in a second reference value of the setting parameter. For example, a plurality of, in particular measured, reference light distributions in corresponding reference values of the setting parameters are stored in one or more look-up tables, wherein the calculation rule may describe an interpolation between such reference light distributions. Thus, as soon as the setting parameters between the reference values are set or selected, a tapering of the light distribution can be performed to determine an approximation of the producible spatial light distribution in the respective values of the setting parameters. In particular, the calculation rule may define a linear and corresponding interpolation between two reference light distributions, which may be performed quickly and simply, from which an approximation of the producible spatial light distribution in the values of the setting parameters between the reference values may be determined.

It may be provided that the calculation rule is determined in a parameterization step on the basis of at least one first reference light distribution in a first reference value of the setting parameter and at least one second reference light distribution in a second reference value of the setting parameter, wherein the parameterization step is performed before the step of determining the approximation. For example, a first reference light distribution and a second reference light distribution may be measured, wherein the calculation rule comprises a respective interpolation rule between the first reference light distribution and the second reference light distribution according to the value of the setting parameter. In particular, a polynomial interpolation may be determined for a plurality of spatial points, which enables a gradual change of the spatial light distribution between such reference light distributions. Here, parameters of such a polynomial interpolation (interpolation parameters) can be stored and used in the calculation step, so that the corresponding spatial light distribution can be determined by inserting the values of the setting parameters into the polynomial interpolation.

It may be provided that in the parameterization step, a respective polynomial interpolation is performed for a plurality of preset or presettable spatial points as a function of the set values of the setting parameters in order to parameterize the light incident on the respective spatial points, wherein the interpolation parameters of the respective polynomial interpolation may be determined as a function of the reference light distribution, and wherein the calculation rule may comprise the respective polynomial interpolation for the plurality of spatial points.

In some embodiments, the reference light distribution may be divided into a plurality of wavelength ranges in the parameterization step, and for each of the wavelength ranges a respective polynomial interpolation may be performed for a plurality of preset or presettable spatial points to parameterize the light incident on the respective spatial point according to a set value of the setting parameter, wherein the interpolation parameter of the respective polynomial interpolation may be determined from the reference light distribution, and wherein the calculation rule may comprise the respective polynomial interpolation for the plurality of spatial points. Accordingly, a respective polynomial interpolation may be performed for each wavelength range at each of a plurality of spatial points, such that an approximation of the spatial color or spectral distribution may be determined from the polynomial interpolation.

In some embodiments, the parameters of the polynomial interpolation and the respective spatial points may be stored in a memory. In particular, the memory may be part of an optical component or part of a spotlight. In the step of determining an approximation, the memory may be accessed and an approximation of the spatial light distribution in a particular value of the setting parameter may be determined, e.g. by interpolating in a polynomial interpolation.

The method can in principle be carried out in a spotlight, in an optical component or externally. In particular, the approximation may be determined, for example, by a light control application or a light planning application of the mobile communication device or the smartphone.

The method steps described in the context of the spotlight system according to the invention are also generally feasible for the above-described method for determining the spatial light distribution of a spotlight system.

Furthermore, according to another aspect, the invention relates to a computer program product comprising instructions which, when executed by a computer, cause the computer to perform the above-mentioned method.

Drawings

The invention is explained below purely by way of example according to embodiments with reference to the drawings.

The figures show:

FIGS. 1A through 1G illustrate front views of a spotlight system having a spotlight and an optical component; a side view of a spotlight system; a perspective view of the spotlight system with the optical components removed from the spotlight; a stereoscopic front view and a stereoscopic rear view of the optical component; and a stereoscopic front view and a stereoscopic rear view of other optical components connectable with the spotlight;

fig. 2A to 2D show respective schematic diagrams of a spotlight system with a spotlight for the generated light and an optical component connectable to the spotlight for generating a spatial light distribution;

fig. 3 shows a schematic front view of a spotlight or its lighting device;

fig. 4 shows a schematic view of a spotlight with integrated optical components;

FIG. 5 shows a schematic diagram for explaining a method for determining an approximation of the spatial light distribution of a spotlight system from variable setting parameters; and

fig. 6 shows a schematic diagram for explaining the determination of a calculation rule with polynomial interpolation for determining an approximation of the spatial light distribution of the spotlight system from variable setting parameters.

List of reference numerals

11 spotlight system

13 spotlight

15 optical element

15a other optical component

17 memory

19 outward interface

21 computing device

23 Lighting device

25 luminous body

27 interface between an optical component and a spotlight

29 connecting device

30 spotlight connecting element

31 spotlight control device

32 connecting element for optical components

33 control device for optical component

34 Ring

35 sensor

36 disassembling mechanism

37 spotlight casing

39 handle

41 bracket

43 holding section

45 cable

47 connecting section

49 light exit opening

51 alignment device

53 bearing body

55 lens

56 Reflector

57 external data collection device

59 regulating device

61 selection device

63 detection device

101 determining the value of a setting parameter

103 read memory

105 inspection of

107 read look-up table

109 output approximation

111 read calculation rules

113 query for settings of a spotlight system

115 determine an approximation

117 output calculated approximations

201 calibration step

203 parameterization step

205 storage step

A pivot axis

Parameters of ai polynomial interpolation

E, E1, E2, E3 optical setup parameters

F polynomial interpolation

I information

L generated light

P light setting parameter

S regulating the direction

Spatial light distribution that V can produce

Z, Z1, Z2, Z3 reference light distribution

Detailed Description

Fig. 1A and 1B show a spotlight system 11, which spotlight system 11 has a spotlight 13 and an optical component 15 that is detachably fixed to the spotlight 13. The spotlight 13 has a holding section 43, via which the spotlight 13 can be fastened in particular to a roof, a wall, a frame or a bracket 41. Furthermore, the spotlight 13 comprises a spotlight body 37, also referred to as a tube of revolution (Tubus), and a lighting device 23 which is designed to generate light L and to emit light L through a light exit opening 49 (see also fig. 2A to 2D, 3 and 4).

In order to be able to set the direction of the light L emitted by the spotlight 13 and to be able to focus the light L, for example, on an object to be illuminated or a person to be illuminated, the spotlight body 37 is connected to the holding section 43 via the alignment device 51 and the handle 39. This aiming device 51 allows the spotlight 13 to pivot about a pivot axis a and to be fixed at a desired deflection, so that the deflection angle of the light L relative to the horizontal can be set. Furthermore, the spotlight 13 can have an interface 19 with a cable 45 connected thereto, via which cable the spotlight 13 can be supplied with power, for example, while this interface 19 can also be used to transmit data (in particular device data, operating data and/or setting data) of the spotlight 13 to the outside, in particular if the cable 45 or an additional cable forms an ethernet cable or the like (see fig. 2A to 2D and fig. 4).

In fig. 1A and 1B, an optical component 15 connected to the spotlight 13 is arranged to generate a spatial light distribution V from the light L generated by the spotlight 13 (see also fig. 2A to 2D and 4). For this purpose, the optical component 15 comprises a reflector 56, wherein such a reflector 56, as in the optical component 15 shown in fig. 1A to 1D, can be designed in particular in sections. Furthermore, such an optical component 15 may also comprise a (stepped) lens 55 (see also fig. 1F), a projection lens, a scattering disk or a filter. The optical component 15 in this case effects a deflection of the light L generated by the spotlight 13 or its illumination device 23 according to geometrical and/or spectral light shape characteristics and produces a desired spatial light distribution V on the surface.

For example, light L can be projected in a relatively narrow circle or in an elliptical bunch onto a surface by means of such an optical component 15 in order to illuminate a specific region of the scene to be recorded and to project from the environment in such a spotlight arrangement, while alternatively it can be provided, for example in a floodlight arrangement, that such a spatial light distribution V is produced by means of the optical component 15, which light irradiates the largest possible surface uniformly and with gentle transitions to the environment which is not illuminated.

As shown in fig. 1C, the optical component 15 is designed to be detachable with respect to the spotlight 13 and is thus designed as a change optical device. By means of the optical component 15 being detachably fastened to the spotlight 13, it is possible to selectively connect different optical components 15 or 15a to the spotlight 13, so that a spatial light distribution V which is in each case optimally adapted to the specific requirements can be obtained from the light L generated by the spotlight 13. For example, the optical component 15 and the other optical components 15a are illustrated in more detail in fig. 1D to 1G.

In order to be able to selectively connect the optical components 15 and 15a for generating the spatial light distribution V to the spotlight 13, the spotlight 13 has a connecting device 29 of a plurality of connecting elements 30 at the front side at which the light L exits through the light exit opening 49. The connecting elements 30 are designed as recesses in the ring 34 into which corresponding ridged connecting elements 32 of the optical components 15 and 15a can be inserted. By subsequently twisting the optical component 15 or 15a to be connected, the connecting element 32 of the optical component 15 or 15a can be secured by the ring 34 at the spotlight 13, so that the optical components 15 and 15a can be connected extremely quickly to the spotlight 13 by means of this bayonet-type rotary connection in order to produce the desired spatial light distribution V. In order to securely fix the respective connected optical component 15 or 15a at the spotlight 13 and also to achieve a quick and uncomplicated removal of the optical component 15 or 15a, for example for replacing the connected optical component 15 or 15a, the spotlight 13 has a removal mechanism 36 which is likewise arranged at the front side. The dismounting mechanism can be operated, for example, by pressing or sliding, wherein the attached optical component 15 or 15a can be released for this operation to be swiveled relative to the spotlight 13 and dismounted from the spotlight 13, while in other cases the attached optical component 15 or 15a can be fixed on the spotlight 13.

The connecting device 29 thus makes it possible to selectively connect one of the optical components 15 and 15a or other optical components 15 of other types, not shown, with the spotlight 13. The optical component 15 can thus have corresponding and in particular different light-shaping characteristics, so that a desired spatial light distribution V can be generated.

The optical component 15 (front and rear perspective view) shown in greater detail in fig. 1D and 1E is designed as a segmented reflector 56 by way of example. As an alternative to the fixed reflector 56 with a non-variable (in particular "soft") light field, it can be provided that the optical component 15, which can be connected to the spotlight 13, can be moved or shifted out, for example, with respect to the optical axis, wherein the resulting spatial light distribution V can be varied depending on the setting of the optical component 15. For example, values of the reflection angle of the generated light beam of 15 °, 30 ° and/or 60 ° can be set by this arrangement. In particular, an optical component 15 of this design with a reflector 56 can be used to illuminate relatively distant objects with a continuously decreasing brightness towards the edge of the surface to be illuminated.

As an alternative to the design with the reflector 56, the optical component 15a (front and rear perspective view) shown in fig. 1F and 1G has a lens 55, in order, for example, to be able to illuminate the area to be illuminated with as uniform a brightness and color as possible. Here, the optical component 15a may be arranged such that, for example, the reflection angle or the semi-scattering angle of the optical component 15a may be adapted. For this purpose, an adjusting device 59 in the form of a knob is provided on the outside of the optical component 15a, by means of which adjusting device the distance of the lens 55 from the light exit opening 49 can also be varied, for example. In particular, the optical component 15a may also have further lenses, which are not visible in fig. 1F and 1G, and for example two lenses arranged at a fixed distance from one another may be moved jointly by actuating the adjusting device 59 in order to adapt the spatial light distribution V which can be generated by the optical component 15 a. Furthermore, it can be provided that the reflection properties of the optical component 15a are adapted by changing the spacing of a plurality of, in particular two, lenses from one another, for which purpose, for example, one of the lenses can be moved by means of the adjusting device 59. In particular, reflection angles of 15 °, 25 ° and/or 35 ° can be provided in such an optical component 15 a.

This adjustability of the optical components 15 and 15a which can be connected to the spotlight 13 therefore achieves that the resulting spatial light distribution V can be adapted without having to replace the optical component 15. In a corresponding manner, instead of having an exchangeable optical arrangement, the spotlight system 11 shown here can also provide a spotlight 13 which is designed with an integrated optical component 15. The optical component 15 can be provided in such a way that the producible spatial light distribution V can be flexibly adapted, while it is also possible to design the spotlight 13 with an integrated and flexible optical element 15 in such a way that the producible spatial light distribution V is fixed.

Due to the influence of the lighting or illuminance on the scene to be or already photographed, there is a need for: for example, data about the spatial light distribution V produced by the optical component 15 in combination with the spotlight 13 can be taken into account in post-production, for example, in order to expand the possibilities for post-processing the scene. Furthermore, it is desirable that a simulation of the light illuminance has been performed before shooting a scene based on such data in order to find the optimal setting and to be directly applicable at the start of shooting.

In order to implement the above-described solution, the spotlight system 11 with the spotlight 13 and the optical component 15 connectable to the spotlight 13 and the spotlight 13 with the integrated optical component 15 illustrated in fig. 4, which is described below with reference to fig. 2A to 2D, are designed to determine and output data of the spatial light distribution V producible by the respective optical component 15.

The spotlight system 11, which is schematically shown in fig. 2A, comprises a spotlight 13 to which an optical component 15 is detachably connected. The spotlight 13 has a connecting device 29 with a connecting element 30, by means of which the optical components 15 and 29 with the connecting section 47 on the carrier 53 are connected to the spotlight 13. For this purpose, for example, a plug connector, a rotary connector, a plug rotary connector and/or a sliding connector, and in particular a form fit and/or a force fit, may be present between the connecting element 30 and the connecting section 47.

By detachably connecting the optical component 15 to the spotlight 13 via the connecting device 29, a plurality of different optical components 15 can be flexibly connected to the spotlight 13, which optical components can be designed as exchangeable optical devices. Furthermore, the spotlight 13 is designed with a handle 39, so that the spotlight system 11 can be transported in a simple manner and can be positioned at a predetermined location by means of the holder 41.

The optical component 15 has a lens 55 which is designed as a converging lens and forms a spatial light distribution V from the light L generated by the illumination device 23 and exiting through the light exit opening 49. Here, the lens 55 functions such that the light L emitted from the illumination device 23 is isotropically irradiated with substantially parallel radiation, for example, to illuminate an object or a person in focus. However, the design of the optical component 15 with the lens 55 is purely exemplary and in principle an arbitrarily designed optical component 15 for generating an arbitrary spatial light distribution V can be connected with the spotlight 13 as a component of the spotlight system 11.

Furthermore, the optical component 15 has a control device 33 which is designed to move the optical component 15 or at least a part of the optical component 15 along the adjustment direction S and thereby to be able to change the spacing between the lens 55 and the light exit opening 49. For example, the control device 33 can be connected to an electrically actuable control device (e.g. an electric motor or other actuator; not shown) for this purpose, and the control device 33 itself can be actuated electrically, in particular via a radio connection. As an alternative to the control device 33, a manually operable adjustment device may be provided. By means of this distance, for example, a half-scattering angle can be set, wherein the spatial light distribution V producible by the optical component 15 can be correlated with the half-scattering angle or the set distance as an optical setting parameter E.

In order to be able to provide data about the spatial light distribution V which can be generated by the optical component 15, the optical component 15 has a memory 17 in which information I about the spatial light distribution V which can be generated by the optical component 15 is stored. The information I can relate to a spatial brightness distribution and/or a spatial color distribution or a spectral distribution, for example, wherein the information I can also specify parameters of the optical component 15, such as the semi-scattering angle, or merely the identification of the optical component 15, for example.

The memory 17 is connected to the spotlight 13 via an interface 27, wherein the memory 17 can be automatically connected to the interface 27 and can be read via this interface when the optical component 15 is connected to the spotlight 13. Furthermore, the interface 27 is connected to the interface 19, wherein the cable 45 is connected to the interface 19, so that the information I stored in the memory 17 can be transmitted to an external data collection device 57 or the memory 17 can be read by the data collection device 57. In addition to the information I about the spatial light distribution V that can be generated, the item number, serial number, semi-scattering angle and/or light intensity value of the optical component 15 can be stored in the memory 17 and in this way can be transmitted to the outside or to an external data collection device 57.

As already explained above, the spatial light distribution V produced by the optical component 15 can be changed by moving the lens 15 relative to the light exit opening 49 along the adjustment direction S. The spatial light distribution V producible by the optical component 15 can thus be related to an optical setting parameter E, for example a half-scattering angle, which can be varied as a result of such a setting.

In order that such variably settable optical component 15 may acquire and output data about the respective producible spatial light distribution V depending on the set value of the optical setting parameter E, the information I stored in the memory 17 may enable an approximation of the spatial light distribution V in relation to the set value of the optical setting parameter E. For example, the stored information I may comprise a calculation rule which may comprise, for a plurality of spatial points r, at least one respective polynomial interpolation F describing the dependence of the fraction T of the producible spatial light distribution V at the respective spatial point r1 on the set value of the optical setting parameter E, as set forth in more detail below with respect to the method for determining an approximation of the producible spatial light distribution V illustrated by fig. 5 and 6. Furthermore, the memory 17 comprises a respective look-up table for a plurality of values E1, E2, E3 of the optical setting parameter E, from which the spatial light distribution V producible in the respective values E1, E2, E3 of the optical setting parameter E can be determined (see also fig. 5 and 6).

In order to be able to carry out such a determination or calculation of the spatial light distribution V as a function of the optical device setting parameters E, the optical component 15 has a computing device 21, which may be designed, for example, as a microprocessor, which is connected to the memory 17. The calculation means 21 are also connected to the control means 33 of the optical component 15 in such a way that set or selected values of the optical setting parameters E are determined and can be taken into account by the calculation means 21 when determining the spatial light distribution V or an approximation thereof. The control device 33 (or a manually operated adjusting device provided instead thereof) can for this purpose comprise, for example, a sensor, by means of which the distance of the lens 55 from the light exit opening 49 can be determined directly or indirectly and can thus be taken into account by the computing device 21 as the optical setting parameter E. Such sensors can be designed, for example, as absolute or incremental position sensors (in the manner of rotation angle sensing or linear sensing).

Here, the determination of the approximation of the spatial light distribution V by the calculation means 21 may in particular comprise the insertion of the respective values of the optical setting parameters E into the above-mentioned polynomial interpolation F. This makes it possible in particular to achieve a gradual change between different spatial light distributions V, wherein only additions and subtractions are carried out, so that an approximation of the calculation of the spatial light distribution V can be obtained without a large computational effort. Furthermore, the information may also comprise other types of calculation rules for determining the approximation, according to which the calculation means 21 determines the approximation. Such calculation rules may for example be based on physical models or comprise rules for interpolating between different, in particular measured, reference light distributions Z. It may be provided, for example, that an approximation of the producible spatial light distribution V is determined for the value of the optical setting parameter E between the reference points E1, E2, E3 by linear interpolation between adjacent reference light distributions Z1 and Z2 or Z2 and Z3, for which reference values there are reference light distributions Z1, Z2, Z3.

The computing device 21 is also connected to the spotlight 13 via the first interface 27 and to the interface 19 via this first structure, so that the approximation determined from the information I can be transmitted to an external data collection device 57.

The spotlight 13 furthermore has a control device 31 which is connected to the lighting device 23 and is designed to control the latter. As fig. 3 illustrates, the lighting device 23 of such a spotlight 13 may comprise a plurality of illuminants 25, wherein the illuminants 25 may be designed in particular as light-emitting diodes. The dimensions of the already mentioned light exit openings 49 can be adapted to the dimensions of the lighting device 23 or to the number of luminous bodies 25. The control device 31 can be designed to selectively set the respective activation state of the luminous means 25. Such activation states may for example comprise an on-state, an off-state, an on-state with a selected brightness and/or an on-state with a selected emission spectrum of the luminous body 25. Furthermore, such an activation state can be set for the respective group of groups of lights 25. Accordingly, by actuating the lighting device 23 and, for example, switching on a specific selection of the illuminants 25 and switching off further illuminants 25, the light leaving the light exit opening 49 can be changed and thus also the spatial light distribution V which can ultimately be produced by the optical component 15. Likewise, the brightness or color setting of the spotlight 13 can also be changed by controlling the lighting device 23.

In order to also take into account the arrangement of the illumination device 23 when determining the spatial light distribution V or to be able to output it as part of the light data set via the interface 19, the illumination device 23 is connected to an interface 27 between the spotlight 13 and the optical component 15. Thereby, settable values, e.g. luminance values or color values, of the light setting parameters P of the spotlight 13 can be transmitted via the interface 27 and the interface 19 as part of the light data set, e.g. in the EULUMDAT format, to the data collection device 57. Furthermore, the computing device 21 of the optical component 15 can be designed to take into account the settable value of the light setting parameter P of the spotlight 13 when determining the spatial light distribution V, wherein the value of the light setting parameter P can be transmitted to the computing device 21 via the interface 27. For example, the set brightness or color of the spotlight 13 or of the lighting device 23 can thus be included as a settable parameter P in the determination performed by the computing device 21 of the approximation of the spatial light distribution V producible by the optical device 15.

In the embodiment illustrated in fig. 2B of the spotlight system 11, the optical component 15 also has a memory 17, in which information I about the spatial light distribution V producible by the optical component 15 is stored and which is connected to the spotlight 13 via an interface 27. The memory 17 of the optical component 15 is in turn connected via an interface 27 to an interface 19 formed at the spotlight 13, so that the data stored in the memory 17 and in particular the information I about the producible spatial light distribution V can be transmitted to the outside. However, this connection is not necessarily required as long as the computing device 21 as explained below is provided.

The spotlight 13 furthermore has a computing device 21 connected to the interface 27, which is designed to determine the spatial light distribution V producible by the optical component 15 or an approximation of this light distribution V on the basis of the information I and on the basis of the values of the variable optical setting parameters E. The computing device 21 is connected to a sensor 35, by means of which the value of the optical setting parameter E of the optical component 15 is determined, which can then be taken into account in determining the approximation of the spatial light distribution V. For this purpose, the sensor 35 can be designed, for example, to determine the distance between the lens 55 and the light exit opening 49, wherein this quantity can be transmitted, for example, as a corresponding semi-scattering angle corresponding thereto to the computing device 21.

Furthermore, the computing device 21 is connected to the lighting device 23, so that the computing device 21 can also take into account the respective settable values of the light setting parameters P of the spotlight 13 when determining. Furthermore, the computing device 21 is connected to a control device 31 of the spotlight 13, which is designed to control the lighting device 23. Instead of or in addition to the computing device 21 being directly connected to the lighting device 23 and the sensor 35, the parameters P and E relating to the spotlight system 11 can also be transmitted indirectly to the computing device 21 via the control device 31, as shown.

In addition to the illumination device 23, the control device 31 is also connected to an electrically controllable adjusting device 59, which can be integrated, for example, into the connecting device 29, wherein the control device 31 is designed to move the optical component 15 connected to the spotlight 13 or its lens 55 in the adjustment direction S by means of the adjusting device 59 and thus to set the optical setting parameter E. Alternatively, in principle, a manually operable adjusting device (see also adjusting device 59 in fig. 1G), which is not shown in fig. 2B and is separate from connecting device 29, can also be provided, wherein in this embodiment, as described, the value of optical setting parameter E is determined by means of sensor 35, transmitted to computing device 21 and can thus be taken into account when determining the approximation of spatial light distribution V.

The computing means 21 are in turn connected to the interface 19, so that the values of the optical setting parameters E of the optical component 15 and/or the calculation results which have been determined by the computing means 21 can be forwarded to the outside and in particular to an external data collection device 57.

In principle, it may also be provided that the determination of the producible approximation of the spatial light distribution V is carried out in a plurality of steps and, for example, is carried out in a distributed manner to the optical components 15 and the respective computing devices 21 of the spotlights 13. In this case, for example, a first result of the determination of the computing device 21 of the optical component 15 can be transmitted to the computing device 21 of the spotlight 13, wherein the computing device 21 of the spotlight 13 ultimately calculates the desired approximation from the first result.

In the embodiment illustrated in fig. 2C of the spotlight system 11, the optical component 15 connected or connectable with the spotlight 13 has a memory 17 with information I about the spatial light distribution V producible by the optical component 15. The information I and other data stored in the memory 17 can be transmitted via the interfaces 27 and 19 and the cable 45 to an external data collection device 57. Furthermore, the interface 19 is connected to a sensor 35 for determining settable optical setting parameters E of the optical component 15, and it is also possible to transmit possible settings of the lighting device 23 or the value of the light setting parameter P of the spotlight 13 via the interface 19 to an external data collection device 57.

Furthermore, the data collection device 57 has a computing device 21, which is designed to determine the spatial light distribution V producible by the optical component 15 as a function of the optical setting parameter E and the settable value of the light setting parameter P of the spotlight 13. It can therefore be provided that only the values of the parameters E and P and other light data are transmitted from the spotlight system 11 to the external data collecting device 57, wherein possible calculations are not performed in the spotlight system 11 itself but by an external device. For example, the external data collection device 57 can be designed as a computer, which prepares or processes metadata for post-production.

In addition to the transmission via the cable 45, it can in principle also be provided in all embodiments that data is transmitted wirelessly and, for example, via a radio connection via the interface 19 and/or the interface 27. In particular in such a transmission, the determination of the spatial light distribution can also be carried out in a light planning or light evaluation application on the mobile radio device or smartphone.

In the spotlight system 11 shown in fig. 2D, an optical component 15 is provided which is detachably connected to the spotlight 13 via a connecting device 29, wherein the spotlight 13 has a memory 17 in which information I about the spatial light distribution V which can be generated by the optical element 15 is stored. The spotlight 13 also has a computing device 21 which is connected to the memory 17 in order to be able to determine an approximation of the producible spatial light distribution V from the settable values of the optical setting parameters E of the optical components 15 (as long as the optical setting parameters E can be adjusted) and the light setting parameters P of the spotlight 13 (as long as the light setting parameters P can be set).

The computing device 21 is connected to the selection device 61, so that a user can select a corresponding connected optical component 15, for example, in order to enable the computing device 21 to determine the spatial light distribution V that can be generated by this optical component 15. The memory 17 accordingly comprises information I for a plurality of connectable optical components 15 about the respective spatial light distributions V producible by the optical components 15. Furthermore, the spotlight 13 has a detection device 63, which detection device 63 is designed to automatically detect the respective connected optical component 15, so that this identification of the lighting device 21 required for determining the producible light distribution V is automatically transmitted to the computing device 21 via the control device 31 of the spotlight 13, which control device is connected to the detection device 63.

In principle, as follows from the different possible embodiments of the spotlight system 11, the components described jointly in the context of the spotlight system 11, the spotlight 13 and the optical component 15 can also be implemented separately according to fig. 2A to 2D: data are provided about the spatial light distribution V that can be generated by the optical component 15. Accordingly, although the components are collectively described in the spotlight system 11, they can also be understood as separate aspects of the invention independent of the spotlight system 11.

In addition to such a spotlight system 11 with a spotlight 13 and an optical component 15 which can be connected selectively to the spotlight 13, fig. 4 shows a spotlight 13 with an integrated or fixedly connected optical component 15 to generate a spatial light distribution V. The optical component 15 is therefore firmly connected to the spotlight 13. The spotlight 13 has a memory 17 in which information I about the generable spatial light distribution V is stored, and the memory 17 is connected to a computing device 21, so that an approximation of the generable spatial light distribution V can be determined from the variable optical setting parameters E of the optical components 15 and the settable parameters P of the spotlight 13. In order to be able to vary the spatial light distribution V that can be generated in such an integrated optical component 15, the spotlight 13 has an adjusting device 59, via which the distance between the lens 55 and the light exit opening 49 can be varied manually or by means of the control device 31 of the spotlight 13.

It may furthermore be provided that the spotlight 13 with the integrated optical component 15 has a memory 17, the setting of which is not changeable, with information I about the spatial light distribution V producible by the optical component 15, wherein such a spotlight 13 may also comprise, for example, a computing device 21, so that the producible spatial light distribution V can be determined in dependence on a settable value, for example a luminance value, of a light setting parameter P of the spotlight 13.

Fig. 5 shows a method for determining an approximation of the spatial light distribution V of a spotlight system 11 having a spotlight 13 and an optical component 15 which can be connected or connected to the spotlight 13, which method can be carried out, for example, by the computing device 21 of the spotlight system 11 shown in fig. 2A to 2D or by the computing device 21 of the spotlight 13 illustrated in fig. 4.

Here, first, in a first step 101, the values of the setting parameters E, P of the spotlight system 11 are determined, which directly or indirectly relate to the spatial light distribution V. The setting parameters E, P may include, for example, the optical setting parameters E of the optical components 15, in particular the half-scattering angle of the optical components 15, or the light setting parameters P of the spotlight 13, such as the already described activation state of the luminous bodies 25 of the lighting device 23 of the spotlight 13. The setting parameters E, P may also include, for example, the distance of the lens 55 or reflector 56 from the proposed lighting device 23 or the distance of such an optical element of the optical component.

Subsequently, in step 103 a memory 17 is read in which, for example, a look-up table or calculation rules may be stored to determine an approximation of the spatial light distribution V from the set values of the setting parameter E, P. Accordingly, in a subsequent step 105, it may be checked whether the memory 17 comprises a look-up table for the respective determined value of the setting parameter E, P, from which look-up table an approximation of the producible spatial light distribution V may be read, or whether an approximation may be determined for this value of the setting parameter E, P according to stored calculation rules.

As long as a look-up table is present, it can be read in step 107 and in a final step 109 output the thus determined approximation of the spatial light distribution V in the determined values of the setting parameters E, P.

For example, in such a look-up table, an approximation of the spatial light distribution V that can actually be generated can be forwarded for a plurality of reference light distributions Z, which can be obtained, for example, in a previous calibration step 201 by a plurality of measurements of the spatial light distribution V in different values E1, E2, E3 of the setting parameter E or P (see also fig. 6). In particular in the case of a spotlight system 11 which only achieves a first and discrete selection of the values E1, E2, E3 of the setting parameters E or P, for example a discrete selection of possible half-scatter angles of the optical component 15, it is in principle possible to determine all possible producible spatial light distributions V from such a look-up table.

If, on the other hand, no look-up table exists for the respective determined values of the optical setting parameters E, a calculation rule can be read from the memory 17 in step 111, according to which an approximation of the spatial light distribution V can be calculated. For example, such calculation rules may define rules of interpolation between the respective reference light distributions Z1, Z2, Z3, so that an approximation of the producible spatial light distribution V in the value of the optical setting parameter E for which there is no reference light distribution Z can be determined. Here, in particular, a linear interpolation between such reference light distributions Z may be provided.

Furthermore, the calculation rule for a plurality of spatial points r may comprise a respective polynomial interpolation F which describes the fraction T of the light incident on the respective spatial point r1 in relation to the optical setting parameter E. Here, as illustrated in fig. 6, such a polynomial interpolation F can be determined in a parameterization step 203 preceding the method.

Here, first of all in a calibration step 201 a plurality of reference light distributions Z (see fig. 6) can be measured in different, here exemplary three values E1, E2 and E3 of the optical setting parameter E. From this reference light distribution Z, the light fraction T incident on a spatial point, for example the spatial point r1, in the respective values E1, E2 and E3 of the optical setting parameter E can be determined for a plurality of spatial points r.

The fractions T1, T2 and T3 determined in this way can be used in the parameterization step 203 as grid points, wherein the fractions are incident on the spatial point r1 in the values E1, E2 and E3 of the optical setting parameter E, by means of which grid points a polynomial interpolation F can be determined, which describes the dependency of the fraction T incident on the spatial point r1 with respect to the optical setting parameter E. For example, the interpolation parameters ai of the polynomial interpolation F may be determined by fitting a polynomial function of order N to the grid points. Finally, the determined interpolation parameters ai as well as the spatial point r1 may be stored in the memory 17 of the spotlight system 11 in a storing step 205. Alternatively, or additionally, the reference light distributions Z1, Z2 and Z3 may be written in the memory 17, for example in the form of respective look-up tables, which are suitably employed directly and time-saving without determination when setting the optical setting parameter E to one of the values E1, E2 or E3.

Alternatively to such calculation rules based on a plurality of polynomial interpolations F, other types of calculation rules may also be stored in the memory 17 and read in step 111 (see fig. 5). For example, the calculation rules may be developed based on one or more or different physical models, or may be based on this or on previous simulations.

In addition to determining the value of the optical setting parameter E in step 101, other settings of the spotlight system 11 that may influence the producible spatial light distribution V may be retrieved in step 113. In particular, in addition to the semi-scattering angle of the optical component 15 or the setting influencing this semi-scattering angle, the respective light setting parameters P of the spotlight 13, for example the brightness and/or color setting, can be taken into account as the determined setting parameters E. In principle, this arrangement for retrieving the further parameters P can be carried out at any point in time of the method shown in fig. 5 and, if necessary, a look-up table can also be compiled which takes into account the influence of the further parameters P on the spatial light distribution V which can be generated. Correspondingly, if an approximation is determined from the look-up table before step 105 or 107, further parameters P influencing the producible spatial light distribution V can also be determined in a step not shown, or step 113 can also be carried out before step 105.

After determining the values of all parameters E, P of the spotlight system 11 to be considered and the calculation rules, it may be determined in step 115 according to the calculation rules that an approximation of the resulting or producible spatial light distribution V is applied. In particular, only additions and subtractions can be carried out in the determination, in order to obtain results in a simple manner and accordingly without great computational effort and to be able to transmit them in real time. For example, the extracted values of the relevant parameters E, P can be inserted into the proposed polynomial interpolation F in order to determine an approximation of the spatial light distribution V. Finally, the determined approximation may be output in step 117.

In principle, the method illustrated in fig. 5 can be carried out in different variants. In particular, it is also possible, for example, to provide only either a look-up table or a calculation rule.

The spotlight system 11, spotlight 13 and optical component 15 disclosed herein implement: the light data and in particular the data relating to the spatial light distribution V which can be generated by means of the optical component 15, which are as complete as possible, are determined and provided in real time. Furthermore, the producible spatial light distribution V can also be determined, in particular by carrying out the described method, depending on settable optical setting parameters E or other settable parameters, in particular light setting parameters P, of the spotlight 13 or the optical component 15 of the spotlight system 11, so that light data in each setting of the spotlight system 11 can be provided, for example, for the post-production of film recordings.