阅读说明：本技术 一种一体式双波长反光杯 (Integrated dual-wavelength reflective cup ) 是由 邹自立 刘林 代超飞 王继锴 肖乐 于 2021-10-08 设计创作，主要内容包括：本发明公开了一种一体式双波长反光杯。为了克服现有技术灯体与雷达处于独立的模块,占用的空间与成本大的问题；本发明包括反光杯本体,双波段光源,设置在反光本本体的内侧,双波段光源中心波长为处于两种不同波段的雷达光源和可见光源；带通膜系层,设置在反光杯本体内层,使得双波段光源中的一波段透射到反光杯本体中,另一波段反射；反光杯本体为至少透过双波段光源中一波段的透光材质；电镀反射层,设置在反光杯本体外层,用于反射透射到反光杯本体中的波段光源。本方案一体式设置,使汽车产品等外观上更加紧凑；因为双波段的整形实现是使用一个模具成型的反光杯实现,使得双波段应用光学系统光轴相对关系一致性好。(The invention discloses an integrated dual-wavelength reflecting cup. The radar lamp solves the problems that in the prior art, a lamp body and a radar are in an independent module, and occupied space and cost are large; the dual-band light source comprises a reflecting cup body and a dual-band light source, wherein the dual-band light source is arranged on the inner side of the reflecting cup body, and the central wavelength of the dual-band light source is a radar light source and a visible light source which are positioned in two different bands; the band-pass film system layer is arranged on the inner layer of the reflection cup body, so that one wave band in the dual-band light source is transmitted into the reflection cup body, and the other wave band is reflected; the reflection cup body is made of a light-transmitting material which at least transmits one wave band in the dual-wave-band light source; and the electroplated reflecting layer is arranged on the outer layer of the reflecting cup body and is used for reflecting the waveband light source transmitted to the reflecting cup body. The scheme is integrally arranged, so that automobile products and the like are more compact in appearance; because the shaping of the dual-waveband is realized by using the reflecting cup formed by a die, the consistency of the relative relation of the optical axes of the dual-waveband application optical system is good.)

1. The utility model provides a reflective cup of integral type dual wavelength, includes anti-light cup body (1), its characterized in that still includes:

the dual-band light source (2) is arranged on the inner side of the reflection cup body (1), and the central wavelength of the dual-band light source (2) is a radar light source and a visible light source which are positioned in two different bands;

the band-pass film system layer (4) is arranged on the inner layer of the reflection cup body (1) to enable one wave band in the dual-wave-band light source to transmit into the reflection cup body (1) and reflect the other wave band;

the reflection cup body (1) is made of a light-transmitting material which at least transmits one wave band in the dual-wave-band light source;

and the electroplating reflection layer (3) is arranged on the outer layer of the reflection cup body (1) and is used for reflecting and transmitting the waveband light source in the reflection cup body (1).

2. An integral dual-wavelength reflective cup according to claim 1, wherein the reflective cup further comprises a fresnel-like layer (5) disposed on an inner layer of the reflective cup body (1) to realize an optical structure based on the fresnel lens principle, and the fresnel-like layer is used for shaping a dual-band light source beam incident on the reflective cup body (1) and a beam emitted from the reflective cup body (1).

3. An integral dual wavelength reflector cup as claimed in claim 2 wherein said fresnel-like layer (5) is concentrically threaded.

4. An integral dual wavelength reflector cup as claimed in claim 2, wherein said fresnel-like layers (5) are arranged in concentric circles.

5. An integral dual wavelength reflector cup as claimed in claim 2, wherein said fresnel-like layer (5) is distributed symmetrically in a stepped configuration along the center of the inner layer of the reflector cup.

6. An integral dual wavelength reflector cup as claimed in claim 2, wherein said fresnel-like layer (5) is distributed centrally symmetrically in a scaly polygonal configuration along the center point of the inner layer of the reflector cup.

7. The integrated dual-wavelength reflecting cup according to claim 1, wherein the visible light source has a wavelength of 380-780 nm; the radar light source wavelength band comprises 850nm, 905nm or 940 nm.

8. An integral dual wavelength reflector cup as claimed in claim 1 or 2, wherein said electroplated reflective layer (3) is a full spectrum reflective plating.

Technical Field

The invention relates to the field of reflecting cups, in particular to an integrated dual-wavelength reflecting cup.

Background

The present car light reflection cup and vehicle radar technique are widely applied to the smart car field for autopilot or vehicle radar detection etc. but the present mainstream vehicle radar all is independent module, even if the laser radar light source and the laser radar detector of vehicle radar have with the regional integration of car light, also be independent of the independent module of reflection of light cup promptly.

Currently, the mainstream vehicle-mounted radar installation is not the following: a vehicle-top type, a front vehicle-mounted radar and a rear vehicle-mounted radar; the disadvantages of this type of solution mainly include: (1) exposed, blown by wind and rain, without protection; (2) the additional independent module makes the whole vehicle look not compact. Such a solution takes up more structural design space and cost.

For example, a chinese patent document discloses an "automobile combined laser radar headlamp and automobile", and its publication No. CN104986096B includes: the laser radar lamp comprises a lampshade and at least one lamp body arranged in the lampshade, wherein at least one laser radar is also arranged in the lampshade; the laser radar comprises a lamp body, and is characterized in that the lamp body is installed on a vehicle body through an automatic adjusting joint point, the automatic adjusting joint point comprises a connecting seat, a stabilizing device is arranged on the connecting seat, the laser radar is installed on the connecting seat through the stabilizing device, and the stabilizing device is used for ensuring the stable connection state of the laser radar. The radar and the lamp body of the scheme are arranged in a split mode, the structure is not compact, and more structural design space and cost are occupied.

Disclosure of Invention

The invention mainly solves the problems that the lamp body and the radar are in an independent module, and the occupied space and the cost are large in the prior art; the utility model provides a reflection of light cup of integral type dual wavelength compresses radar initiative light and traditional car light illuminating light source to a reflection of light cup and realizes for the effect of the existing traditional car light illumination of car light also has the effect of radar light illumination, greatly saves structural design space and cost.

The technical problem of the invention is mainly solved by the following technical scheme:

the utility model provides a reflective cup of integral type dual wavelength, includes anti-light cup body, still includes:

the dual-band light source is arranged on the inner side of the reflection cup body, and the central wavelength of the dual-band light source is a radar light source and a visible light source which are positioned in two different bands;

the band-pass film system layer is arranged on the inner layer of the reflection cup body, so that one wave band in the dual-band light source is transmitted into the reflection cup body, and the other wave band is reflected;

the reflecting cup body is made of a light-transmitting material which at least transmits one wave band in the dual-wave-band light source;

and the electroplated reflecting layer is arranged on the outer layer of the reflecting cup body and is used for reflecting the waveband light source transmitted to the reflecting cup body.

This scheme integrated into one piece does not increase the assembly process, and the design is accomplished the back, can not increase the part cost. The integral type is the same with traditional car light in appearance, does not additionally increase outward appearance design and extra module space reservation, makes car products etc. compacter in appearance. Because the shaping of dual-waveband is realized by using a reflective cup formed by a die, the consistency of the relative relation of the optical axes of the dual-waveband application optical system is good, and the trouble of debugging the optical axes of two independent modules is avoided. Interior placing traditional visible light car light in, there is the protection of car light dustcoat, avoid exposing for the radar function is more reliable.

Preferably, the reflection cup further comprises a Fresnel-like layer arranged on the inner layer of the reflection cup body, so that the optical structure based on the Fresnel lens principle is realized, and the light beams of the two-waveband light source incident to the reflection cup body and the light beams emitted from the reflection cup body are shaped. The structure configuration of the Fresnel-like layer, the light-transmitting entity and the outer reflecting layer of the light reflecting cup is adopted, the structure is compact, and an independent module is not additionally arranged.

Preferably, the fresnel-like layer is a concentric thread. The Fresnel lens is characterized in that a thick lens is replaced by a circle of concentric threads to achieve the same optical effect and shape a light beam.

Preferably, the fresnel-like layers are distributed in concentric circles. The concentric circle distribution is adopted as an optical structure for achieving the principle similar to a Fresnel lens.

Preferably, the Fresnel-like layers are distributed along the center of the inner layer of the reflecting cup in a step-shaped structure in a central symmetry mode. The stepped structure is adopted as an optical structure achieving the principle similar to a Fresnel lens.

Preferably, the Fresnel-like layers are distributed symmetrically along the center point of the inner layer of the light reflecting cup in a scaly polygonal structure. A scaly polygonal structure is adopted as an optical structure achieving the principle similar to a Fresnel lens.

Preferably, the wave band of the visible light source is 380-780 nm; the radar light source wavelength band comprises 850nm, 905nm or 940 nm. The radar active light and the traditional car lamp lighting source are compressed to a reflection cup to realize, so that the car lamp has the function of the traditional car lamp lighting and also has the function of the radar light lighting.

Preferably, the electroplated reflecting layer is a full-spectrum reflecting electroplated layer. And shaping the light beam projected into the reflection cup body.

The invention has the beneficial effects that:

1. the integrated into one piece does not increase the assembly process, and the design back can not increase the part cost.

2. The integral type is the same with traditional car light in appearance, does not additionally increase outward appearance design and extra module space reservation, makes car products etc. compacter in appearance.

3. Because the shaping of dual-waveband is realized by using a reflective cup formed by a die, the consistency of the relative relation of the optical axes of the dual-waveband application optical system is good, and the trouble of debugging the optical axes of two independent modules is avoided.

4. Interior placing traditional visible light car light in, there is the protection of car light dustcoat, avoid exposing for the radar function is more reliable.

Drawings

Fig. 1 is a schematic structural diagram of a reflector cup according to the present invention.

Fig. 2 is a schematic diagram of the optical path propagation of the present invention.

In the figure, 1 is a reflection cup body, 2 is a dual-waveband light source, 3 is an electroplating reflection layer, 4 is a band-pass film system layer, and 5 is a Fresnel-like layer.

Detailed Description

The technical scheme of the invention is further specifically described by the following embodiments and the accompanying drawings.

Example (b):

the integrated dual-wavelength reflective cup of the present embodiment, as shown in fig. 1, includes a reflective cup body 1, a dual-band light source 2, an electroplated reflective layer 3, a band-pass film system layer 4, and a fresnel-like layer 5.

In this embodiment, the reflection cup is an improvement of a conventional car lamp reflection cup, and the reflection cup is an arc-shaped reflection cup.

The reflection cup body 1 is made of a light-transmitting material which at least transmits one wave band of the two-wave-band light source. The transparent materials are various, and the plastic materials are commonly used as pmma, pc, E48R, etc., and the glass materials are glass libraries, etc.

In the present embodiment, the two-band light source 2 refers to a radar light source and a visible light source having central wavelengths in two different bands. The band is 380-780 nm visible light band in one-section meaning, and reaches near infrared (such as 850nm, 905nm, 940nm and the like which are commonly used) to millimeter wave band used by radar.

In this embodiment, 940nm (or other near-infrared or intermediate-wavelength infrared bands, such as 1550nm, millimeter waves, etc.) is selected as a transmitting light source for a certain vehicle-mounted radar, and the vehicle lamp is illuminated by visible light (380-780 nm), so that two band light sources can be arranged at the position of the dual-band light source shown in the figure.

The outer layer of the reflection cup body 1 is coated with an electroplating reflection layer 3, and the electroplating reflection layer 3 is used for reflecting and transmitting a waveband light source in the reflection cup body 1. The electroplated reflecting layer 3 is a full-spectrum reflecting electroplated layer or a waveband reflecting electroplated layer.

The inner layer of the reflection cup body 1 is provided with a Fresnel-like layer 5. The fresnel-like layer 5 is a few optical structures, including fresnel screw lenses, including those similar to the fresnel lens principle, in the form of concentric circles, steps or squash polygons. The Fresnel-like layer 5 shapes the light beam of the dual-band light source incident to the reflective cup body 1 and the light beam emitted from the reflective cup body 1.

The band-pass film system layer 4 is arranged on the surface of the Fresnel-like layer 5, and enables one wave band of the two-wave-band light source to transmit into the reflection cup body and the other wave band to reflect.

As shown in fig. 2, the first light beam a is the dual band light source 2 light beam. The light beams of the dual-band light source 2 are incident on the band-pass film system layer 4 on the Fresnel-like layer 5, and the second light beams b are reflected and the third light beams c are refracted into the reflection cup body 1 due to the characteristics of the band-pass film system layer 4. The second light beam b and the third light beam c are single-waveband light sources with two different wavebands respectively. The third light beam c is reflected into a fourth light beam d after passing through the electroplated reflecting layer 3, and the fourth light beam d is refracted to form a fifth light beam e when being emitted from the reflecting cup body.

The fresnel-like layer 5 also shapes the incident beam while reflecting and refracting. The shaping is an optical design, and the energy distribution of incident light can be redistributed according to target requirements through the optical design of an optical surface, for example, the incident light is light with uneven divergence, and the emergent or reflected light is shaped into collimated light or uniform square spots or circular spots at different angles through the surface type design of the optical surface. Such as reflecting the first light beam a shown in fig. 2 and shaping into a second light beam target to exit. The refraction-shaping action is divided into two processes, one is incident pre-shaping, such as shaping output from the first beam a to the third beam c, and the other is emergent final shaping, such as shaping output from the fourth beam d to the fifth beam e.

The light beam emitted by the dual-band light source 1 comprises two bands, such as a first light beam a, which propagates to the incident fresnel-like layer 5, and since the band-pass film system layer 4 only allows a specific band to pass through, and reflects other bands, so that one band reflects (e.g. a second light beam) while the other band transmits (e.g. a third light beam), the reflection follows the reflection theorem, i.e. the incident angle = the reflection angle, and the transmission follows the refraction theorem n1 x sin (θ 1) = n2 x sin (θ 2), n1 and θ 1 respectively represent the incident spatial refractive index and the incident angle, and n2 and θ 2 respectively represent the refraction spatial refractive index and the refraction angle, and besides splitting by the bands, the fresnel-like layer 5 also has a shaping effect, i.e. the fresnel-like surface type is optically designed to achieve a predetermined reflection or refraction effect, such as the final emission effect of the second light beam b, which is achieved by designing the input of the light beam in the same band as the second light beam b in the incident first light beam a, the second light beam b is designed and output as a target, the optical surface type of the Fresnel layer can be calculated through the reflection theorem, the shaping emergent effect of the third light beam c can be calculated by combining the optical surface type with the incident condition of the first light beam a, the third light beam c is reflected by the reflecting layer outside the reflecting cup to form a fourth light beam d, the fourth light beam d refracts a fifth light beam e through the emergent Fresnel-like layer, and the surface type of the emergent Fresnel layer is calculated to be the same as that of the incident Fresnel layer.

The surface type calculation mechanism of the reflective outer reflecting layer is that the light emitting effect of the third light beam c is calculated according to the above, the surface type of the reflective cup outer reflecting layer is calculated according to the reflection theorem, the light emitting effect of the fourth light beam d needs to be known, the fifth light beam e is a target light beam and is a known condition, and the emergent type Fresnel surface type can be calculated according to the incident type Fresnel surface type, so that the light emitting effect of the fourth light beam d can be obtained by knowing the fifth light beam e and the refracting surface (emergent type Fresnel surface type) according to the refraction theorem, and the surface type calculation of the reflective cup can be naturally obtained.

In this embodiment, the band-pass film system layer 4 of the reflector cup has a transmittance of 0% in a wavelength range of 780nm or less and a coating film having a transmittance of 100% in a wavelength range of 780nm or more, and the outer reflective layer of the reflector cup is a high-reflectance plating layer and reflects all wavelength bands. The coating configuration can enable visible light to be directly shaped and reflected through the Fresnel, and 940nm transmission Fresnel-like layer is shaped in a transmission mode, reflected by the outer reflecting layer of the reflecting cup, shaped and output through the transmission shaping of the Fresnel-like layer. A reflective cup achieves the purpose of dual-band shaping.

The scheme of this embodiment integrated into one piece does not increase the assembly process, and the design is accomplished the back, can not increase part cost. The integral type is the same with traditional car light in appearance, does not additionally increase outward appearance design and extra module space reservation, makes car products etc. compacter in appearance. Because the shaping of dual-waveband is realized by using a reflective cup formed by a die, the consistency of the relative relation of the optical axes of the dual-waveband application optical system is good, and the trouble of debugging the optical axes of two independent modules is avoided. Interior placing traditional visible light car light in, there is the protection of car light dustcoat, avoid exposing for the radar function is more reliable.

It should be understood that the examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and such equivalents may fall within the scope of the present invention as defined in the appended claims.