阅读说明：本技术 均匀性补偿方法、光波导系统及增强现实设备 (Uniformity compensation method, optical waveguide system and augmented reality equipment ) 是由 饶轶 刘德安 于 2019-11-21 设计创作，主要内容包括：本发明公开一种均匀性补偿方法、光波导系统及增强现实设备,所述光波导包括第一光波导与第二光波导,所述方法包括：获取所述第一光波导的第一亮度分布与所述第二光波导的第二亮度分布；根据所述第一亮度分布与所述第二亮度分布确定所述第一光波导的第一亮度分布方向与所述第二光波导的第二亮度分布方向；根据所述第一亮度分布方向确定所述第一光波导的第一摆放方式以及根据所述第二亮度分布方向确定所述第二光波导的第二摆放方式。本发明提供一种均匀性补偿方法、光波导系统及增强现实设备,旨在解决现有技术中由于光波导设计和加工误差导致的耦出区域亮度不同,图像不均匀的问题。(The invention discloses a uniformity compensation method, an optical waveguide system and augmented reality equipment, wherein an optical waveguide comprises a first optical waveguide and a second optical waveguide, and the method comprises the following steps: acquiring a first brightness distribution of the first optical waveguide and a second brightness distribution of the second optical waveguide; determining a first brightness distribution direction of the first optical waveguide and a second brightness distribution direction of the second optical waveguide according to the first brightness distribution and the second brightness distribution; and determining a first arrangement mode of the first optical waveguide according to the first brightness distribution direction and determining a second arrangement mode of the second optical waveguide according to the second brightness distribution direction. The invention provides a uniformity compensation method, an optical waveguide system and augmented reality equipment, and aims to solve the problems of different brightness of an out-coupling area and non-uniform images caused by optical waveguide design and processing errors in the prior art.)

1. A uniformity compensation method applied to an optical waveguide including a first coupling-in region and a first coupling-out region and a second optical waveguide including a second coupling-in region and a second coupling-out region, the method comprising:

acquiring a first brightness distribution of the first optical waveguide and a second brightness distribution of the second optical waveguide;

determining a first brightness distribution direction of the first optical waveguide and a second brightness distribution direction of the second optical waveguide according to the first brightness distribution and the second brightness distribution;

and determining a first arrangement mode of the first optical waveguide according to the first brightness distribution direction and determining a second arrangement mode of the second optical waveguide according to the second brightness distribution direction.

2. The uniformity compensation method of claim 1, wherein the step of determining a first luminance distribution direction of the first light waveguide and a second luminance distribution direction of the second light waveguide based on the first luminance distribution and the second luminance distribution comprises:

determining first brightness change rates of different brightness distribution directions in the first optical waveguide according to the first brightness distribution, and determining second brightness change rates of different brightness distribution directions in the second optical waveguide according to the second brightness distribution;

determining an absolute value of a sum of each of the first luminance change rates and each of the second luminance change rates, respectively;

and acquiring a first brightness change rate and a second brightness change rate corresponding to the minimum absolute value in the absolute values, wherein the brightness distribution direction corresponding to the first brightness change rate corresponding to the minimum absolute value is taken as the first brightness distribution direction, and the brightness distribution direction corresponding to the second brightness change rate corresponding to the minimum absolute value is taken as the second brightness distribution direction.

3. The uniformity compensation method of claim 1, wherein the step of determining a first placement of the first optical waveguide according to the first luminance distribution direction and a second placement of the second optical waveguide according to the second luminance distribution direction comprises:

acquiring a first change rate of the first optical waveguide in the first luminance distribution direction and acquiring a second change rate of the second optical waveguide in the second luminance distribution direction;

determining a first coupling-out position in the first brightness distribution direction and a second coupling-out position in the second brightness distribution direction according to the first change rate edge and the second change rate;

and determining a first arrangement mode of the first optical waveguide according to the first coupling-out position and determining a second arrangement mode of the second optical waveguide according to the second coupling-out position.

4. The uniformity compensation method of claim 3, wherein the step of determining a first out-coupling position in the first luminance distribution direction and a second out-coupling position in the second luminance distribution direction according to the first change rate side and the second change rate comprises:

and determining a first coupling-out position of the first optical waveguide and a second coupling-out position of the second optical waveguide according to the first change rate, the second change rate and a preset coupling-out range.

5. The uniformity compensation method of claim 4, wherein the step of determining a first outcoupling location of the first optical waveguide and a second outcoupling location of the second optical waveguide based on the first rate of change, the second rate of change, and a preset outcoupling range comprises:

determining a first change rate range and a second change rate range according to the first change rate, the second change rate and the preset coupling-out range;

and determining a first coupling-out position of the first optical waveguide and a second coupling-out position of the second optical waveguide according to the first change rate range and the second change rate range.

6. The uniformity compensation method of claim 5, wherein the step of determining a first outcoupling location of the first optical waveguide and a second outcoupling location of the second optical waveguide based on the first range of rates of change and the second range of rates of change comprises:

determining an absolute value of a sum of the first range of rates of change and the second range of rates of change;

when the absolute value of the sum of the first rate of change range and the second rate of change range is minimum, the position corresponding to the first rate of change range is determined to be the first coupling-out position, and the position corresponding to the second rate of change range is determined to be the second coupling-out position.

7. The uniformity compensation method of claim 1, wherein the step of obtaining a first luminance distribution of the first optical waveguide and a second luminance distribution of the second optical waveguide comprises:

obtaining a first brightness measurement of the first optical waveguide including brightness values of different measurement regions of the first optical waveguide and a second brightness measurement of the second optical waveguide including brightness values of different regions of the second optical waveguide;

the luminance values of the plurality of first luminance measurement values are added according to a measurement area to determine the first luminance distribution, and the luminance values of the plurality of second luminance measurement values are added according to the measurement area to determine the second luminance distribution.

8. The uniformity compensation method of claim 1, wherein a straight line of the first luminance distribution direction passes through a center position of the first coupling-out region of the first optical waveguide, and a straight line of the second luminance distribution direction passes through a center position of the second coupling-out region of the second optical waveguide.

9. An optical waveguide system comprising a first optical waveguide comprising a first coupling-in region and a first coupling-out region and a second optical waveguide comprising a second coupling-in region and a second coupling-out region;

the coupling-in area of the first optical waveguide is positioned on the left side of the coupling-out area of the first optical waveguide, and the coupling-in area of the second optical waveguide is positioned on the right side of the coupling-out area of the second optical waveguide;

or the coupling-in region of the first optical waveguide is located on the upper side of the coupling-out region of the first optical waveguide, and the coupling-in region of the second optical waveguide is located on the lower side of the coupling-out region of the second optical waveguide;

or the coupling-in region of the first optical waveguide is located at a corner of the coupling-out region of the first optical waveguide, the coupling-in region of the second optical waveguide is located at a diagonal side of the coupling-out region of the second optical waveguide, and the coupling-in region of the first optical waveguide and the coupling-in region of the second optical waveguide are arranged along a diagonal.

10. An augmented reality device comprising a display unit and the optical waveguide system of claim 9, wherein the light emitted from the display unit enters the optical waveguide system from the coupling-in region of the optical waveguide system and is transmitted to human eyes after exiting from the coupling-out region of the optical waveguide system.

Technical Field

The invention relates to the technical field of optical imaging, in particular to a uniformity compensation method, an optical waveguide system and augmented reality equipment.

Background

Augmented Reality (AR) technology is a technology for fusing virtual information with a real world, and when an Augmented Reality device is used, it is ensured that both the virtual information and the real external world can be observed.

Generally, a display system of an augmented reality device for displaying virtual information generally includes a display screen and an optical system, an image displayed on the display screen is transmitted to human eyes through the optical system, and in order to avoid blocking observation of the real world, an image emitted from the display screen is transmitted by adding an optical waveguide, and the image emitted from the display screen enters from a coupling end of the optical waveguide and exits from a coupling end.

In the production and processing process of the optical waveguide, due to the design error and the processing error, the optical waveguide can cause the situation that the brightness is uneven when light is coupled out in the process of transmitting an image, and under the situation, when the image is observed through the augmented reality equipment, the problems of different areas in the observation range, different brightness and uneven image can occur.

Disclosure of Invention

The invention provides a uniformity compensation method, an optical waveguide system and augmented reality equipment, and aims to solve the problems of different brightness of an out-coupling area and non-uniform images caused by optical waveguide design errors and processing errors in the prior art.

In order to achieve the above object, the present invention provides a uniformity compensation method applied to an optical waveguide including a first optical waveguide and a second optical waveguide, the first optical waveguide including a first coupling-in region and a first coupling-out region, the second optical waveguide including a second coupling-in region and a second coupling-out region, the method comprising:

acquiring a first brightness distribution of the first optical waveguide and a second brightness distribution of the second optical waveguide;

determining a first brightness distribution direction of the first optical waveguide and a second brightness distribution direction of the second optical waveguide according to the first brightness distribution and the second brightness distribution;

and determining a first arrangement mode of the first optical waveguide according to the first brightness distribution direction and determining a second arrangement mode of the second optical waveguide according to the second brightness distribution direction.

Optionally, the step of determining a first luminance distribution direction of the first optical waveguide and a second luminance distribution direction of the second optical waveguide according to the first luminance distribution and the second luminance distribution includes:

determining first brightness change rates of different brightness distribution directions in the first optical waveguide according to the first brightness distribution, and determining second brightness change rates of different brightness distribution directions in the second optical waveguide according to the second brightness distribution;

determining an absolute value of a sum of each of the first luminance change rates and each of the second luminance change rates, respectively;

and acquiring a first brightness change rate and a second brightness change rate corresponding to the minimum absolute value in the absolute values, wherein the brightness distribution direction corresponding to the first brightness change rate corresponding to the minimum absolute value is taken as the first brightness distribution direction, and the brightness distribution direction corresponding to the second brightness change rate corresponding to the minimum absolute value is taken as the second brightness distribution direction.

Optionally, the step of determining a first placement manner of the first optical waveguide according to the first brightness distribution direction and determining a second placement manner of the second optical waveguide according to the second brightness distribution direction includes:

acquiring a first change rate of the first optical waveguide in the first luminance distribution direction and acquiring a second change rate of the second optical waveguide in the second luminance distribution direction;

determining a first coupling-out position in the first brightness distribution direction and a second coupling-out position in the second brightness distribution direction according to the first change rate edge and the second change rate;

and determining a first arrangement mode of the first optical waveguide according to the first coupling-out position and determining a second arrangement mode of the second optical waveguide according to the second coupling-out position.

Optionally, the step of determining a first coupling-out position in the first luminance distribution direction and a second coupling-out position in the second luminance distribution direction according to the first change rate side and the second change rate includes:

and determining a first coupling-out position of the first optical waveguide and a second coupling-out position of the second optical waveguide according to the first change rate, the second change rate and a preset coupling-out range.

Optionally, the step of determining the first coupling-out position of the first optical waveguide and the second coupling-out position of the second optical waveguide according to the first change rate, the second change rate, and a preset coupling-out range includes:

determining a first change rate range and a second change rate range according to the first change rate, the second change rate and the preset coupling-out range;

and determining a first coupling-out position of the first optical waveguide and a second coupling-out position of the second optical waveguide according to the first change rate range and the second change rate range.

Optionally, the step of determining the first coupling-out position of the first optical waveguide and the second coupling-out position of the second optical waveguide according to the first change rate range and the second change rate range includes:

determining an absolute value of a sum of the first range of rates of change and the second range of rates of change;

when the absolute value of the sum of the first rate of change range and the second rate of change range is minimum, the position corresponding to the first rate of change range is determined to be the first coupling-out position, and the position corresponding to the second rate of change range is determined to be the second coupling-out position.

Optionally, the step of obtaining a first brightness distribution of the first optical waveguide and a second brightness distribution of the second optical waveguide includes:

obtaining a first brightness measurement of the first optical waveguide including brightness values of different measurement regions of the first optical waveguide and a second brightness measurement of the second optical waveguide including brightness values of different regions of the second optical waveguide;

the luminance values of the plurality of first luminance measurement values are added according to a measurement area to determine the first luminance distribution, and the luminance values of the plurality of second luminance measurement values are added according to the measurement area to determine the second luminance distribution.

Optionally, a straight line where the first luminance distribution direction is located passes through a central position of the first optical waveguide, and a straight line where the second luminance distribution direction is located passes through a central position of the second optical waveguide.

To achieve the above object, the present application proposes an optical waveguide uniformity compensation apparatus, comprising: memory, processor and computer program stored on the memory and executable on the processor, the computer program, when executed by the processor, implementing the steps of the uniformity compensation method according to any of the embodiments described above.

In order to achieve the above object, the present application provides an optical waveguide system, which includes a first optical waveguide and a second optical waveguide, and the first optical waveguide and the second optical waveguide are arranged in a manner that the uniformity compensation method according to any of the above embodiments is applied.

In order to achieve the above object, the present application provides an augmented reality device, which includes a display unit and an optical waveguide system as described in any one of the above embodiments, where the optical waveguide system includes a first optical waveguide and a second optical waveguide, and light emitted from the display unit enters the optical waveguide system from a coupling-in region of the optical waveguide system and is transmitted to human eyes after being emitted from a coupling-out region of the optical waveguide system.

Optionally, the coupling-in region of the first optical waveguide is located on the left side of the coupling-out region of the first optical waveguide, and the coupling-in region of the second optical waveguide is located on the right side of the coupling-out region of the second optical waveguide;

or the coupling-in region of the first optical waveguide is located on the upper side of the coupling-out region of the first optical waveguide, and the coupling-in region of the second optical waveguide is located on the lower side of the coupling-out region of the second optical waveguide;

or the coupling-in region of the first optical waveguide is located at a corner of the coupling-out region of the first optical waveguide, the coupling-in region of the second optical waveguide is located at a diagonal side of the coupling-out region of the second optical waveguide, and the coupling-in region of the first optical waveguide and the coupling-in region of the second optical waveguide are arranged along a diagonal.

In the technical scheme provided by the application, in order to compensate the brightness uniformity of different optical waveguides in the augmented reality device, a first brightness distribution of a first optical waveguide and a second brightness distribution of a second optical waveguide are obtained at first; and determining a first brightness distribution direction of the first optical waveguide and a second brightness distribution direction of the second optical waveguide according to the first brightness distribution and the second brightness distribution, and after determining the first brightness distribution direction and the second brightness distribution direction, placing the first optical waveguide according to the first brightness distribution direction, and placing the second optical waveguide according to the second brightness distribution direction. Through the brightness distribution conditions of the first optical waveguide and the second optical waveguide, the brightness distribution of the second optical waveguide in the area with lower output light brightness of the first optical waveguide is compensated, and the brightness distribution of the first optical waveguide in the area with lower output light brightness of the second optical waveguide is compensated, so that the problems of different brightness of the coupling-out area and non-uniform image caused by optical waveguide design and processing errors in the prior art are solved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is a schematic terminal structure diagram of a hardware operating environment according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of an augmented reality device according to the present invention;

FIG. 3 is a schematic diagram of the position of an embodiment of a first optical waveguide and a second optical waveguide of the present invention;

FIG. 4 is a schematic positional diagram of another embodiment of the first and second optical waveguides of the present invention;

FIG. 5 is a schematic positional diagram of another embodiment of the first and second optical waveguides of the present invention;

FIG. 6 is a schematic positional diagram of another embodiment of the first and second optical waveguides of the present invention;

FIG. 7 is a schematic positional diagram of another embodiment of the first and second optical waveguides of the present invention;

FIG. 8 is a schematic positional diagram of another embodiment of the first and second optical waveguides of the present invention;

FIG. 9 is a schematic flow chart diagram illustrating one embodiment of a uniformity compensation method of the present invention;

FIG. 10 is a schematic flow chart diagram of a uniformity compensation method according to another embodiment of the present invention;

FIG. 11 is a schematic flow chart diagram illustrating a uniformity compensation method according to another embodiment of the present invention;

FIG. 12 is a schematic flow chart diagram illustrating a uniformity compensation method according to another embodiment of the present invention;

FIG. 13 is a schematic flow chart diagram illustrating a uniformity compensation method according to another embodiment of the present invention;

FIG. 14 is a schematic flow chart diagram illustrating a uniformity compensation method according to another embodiment of the present invention;

FIG. 15 is a schematic flow chart diagram of a uniformity compensation method according to another embodiment of the present invention.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				10	First optical waveguide	21	Second coupling-in region
11	A first coupling-in region	22	Second coupling-out region
				12	A first coupling-out region	30	Augmented reality device
20	Second optical waveguide

The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In addition, the technical solutions in the embodiments of the present invention may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination of technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

As shown in fig. 1, fig. 1 is a schematic device structure diagram of a hardware operating environment according to an embodiment of the present invention.

The device of the embodiment of the invention can comprise a control device of a computer and other devices, such as a server, a mobile terminal device, a centralized controller and the like.

As shown in fig. 1, the apparatus may include: a controller 1001, such as a CPU, a network interface 1004, a user interface 1003, a memory 1005, and a communication bus 1002. Wherein a communication bus 1002 is used to enable connective communication between these components. The user interface 1003 may include a Display screen (Display), an input unit such as a Keyboard (Keyboard), and the optional user interface 1003 may also include a standard wired interface, a wireless interface. The network interface 1004 may optionally include a standard wired interface, a wireless interface (e.g., WI-FI interface). The memory 1005 may be a high-speed RAM memory or a non-volatile memory (e.g., a magnetic disk memory). The memory 1005 may alternatively be a storage device separate from the controller 1001 described above.

Those skilled in the art will appreciate that the configuration of the device shown in fig. 1 is not intended to be limiting of the device and may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components.

The apparatus may include: a processor 1001, such as a CPU, a memory 1005, a communication bus 1002, and a network interface 1004. The communication bus 1002 is used for implementing connection communication between the components in the device. The network interface 1004 may optionally include a standard wired interface, a wireless interface (e.g., WI-FI interface). The memory 1005 may be a high-speed RAM memory or a non-volatile memory (e.g., a magnetic disk memory). The memory 1005 may alternatively be a storage device separate from the processor 1001. As shown in fig. 1, a memory 1005, which is a readable storage medium, may include therein an operating system, a network communication module, and an abnormality detection program.

Those skilled in the art will appreciate that the configuration of the device shown in fig. 1 is not intended to be limiting of the device and may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components.

As shown in fig. 1, a memory 1005, which is a kind of computer storage medium, may include therein an operating system, a network communication module, a user interface module, and an abnormality detection program.

Acquiring a first brightness distribution of the first optical waveguide 10 and a second brightness distribution of the second optical waveguide 20;

determining a first luminance distribution direction of the first light waveguide 10 and a second luminance distribution direction of the second light waveguide 20 according to the first luminance distribution and the second luminance distribution;

a first arrangement of the first light waveguides 10 is determined according to the first luminance distribution direction and a second arrangement of the second light waveguides 20 is determined according to the second luminance distribution direction.

Further, the controller 1001 may call an application program stored in the memory 1005, and also perform the following operations:

determining a first luminance change rate in different luminance distribution directions in the first optical waveguide 10 according to the first luminance distribution, and determining a second luminance change rate in different luminance distribution directions in the second optical waveguide 20 according to the second luminance distribution;

determining an absolute value of a sum of each of the first luminance change rates and each of the second luminance change rates, respectively;

and acquiring a first brightness change rate and a second brightness change rate corresponding to the minimum absolute value in the absolute values, wherein the brightness distribution direction corresponding to the first brightness change rate corresponding to the minimum absolute value is taken as the first brightness distribution direction, and the brightness distribution direction corresponding to the second brightness change rate corresponding to the minimum absolute value is taken as the second brightness distribution direction.

Further, the controller 1001 may call an application program stored in the memory 1005, and also perform the following operations:

acquiring a first rate of change of the first optical waveguide 10 in the first luminance distribution direction and acquiring a second rate of change of the second optical waveguide 20 in the second luminance distribution direction;

determining a first coupling-out position in the first brightness distribution direction and a second coupling-out position in the second brightness distribution direction according to the first change rate edge and the second change rate;

a first arrangement of the first optical waveguides 10 is determined according to the first coupling-out position and a second arrangement of the second optical waveguides 20 is determined according to the second coupling-out position.

Further, the controller 1001 may call an application program stored in the memory 1005, and also perform the following operations:

determining a first coupling-out position of the first optical waveguide 10 and a second coupling-out position of the second optical waveguide 20 according to the first change rate, the second change rate and a preset coupling-out range.

Further, the controller 1001 may call an application program stored in the memory 1005, and also perform the following operations:

determining a first change rate range and a second change rate range according to the first change rate, the second change rate and the preset coupling-out range;

according to the first and second change rate ranges, the first coupling-out position of the first optical waveguide 10 and the second coupling-out position of the second optical waveguide 20 are determined.

Further, the controller 1001 may call an application program stored in the memory 1005, and also perform the following operations:

determining an absolute value of a sum of the first range of rates of change and the second range of rates of change;

when the absolute value of the sum of the first rate of change range and the second rate of change range is minimum, the position corresponding to the first rate of change range is determined to be the first coupling-out position, and the position corresponding to the second rate of change range is determined to be the second coupling-out position.

Further, the controller 1001 may call an application program stored in the memory 1005, and also perform the following operations:

obtaining a first brightness measurement of the first optical waveguide including brightness values of different measurement regions of the first optical waveguide and a second brightness measurement of the second optical waveguide including brightness values of different regions of the second optical waveguide;

the luminance values of the plurality of first luminance measurement values are added according to a measurement area to determine the first luminance distribution, and the luminance values of the plurality of second luminance measurement values are added according to the measurement area to determine the second luminance distribution.

The invention provides a uniformity compensation method, an optical waveguide system and augmented reality equipment.

Referring to fig. 9, the uniformity compensation method is applied to optical waveguides including a first optical waveguide 10 and a second optical waveguide 20, the first optical waveguide 10 includes a first coupling-in region 11 and a second coupling-out region 22, the second optical waveguide 20 includes a second coupling-in region 21 and a second coupling-out region 22, and the uniformity compensation method includes:

s100, obtaining a first brightness distribution of the first optical waveguide 10 and a second brightness distribution of the second optical waveguide 20;

the optical waveguide used in the augmented reality device 30 includes a first optical waveguide 10 and a second optical waveguide 20, the first optical waveguide 10 is installed in a left eye display area of the augmented reality device 30, the second optical waveguide 20 is installed in a right eye display area of the augmented reality device 30, and a user can observe an external environment through the first coupling-out area 12 and the second coupling-out area 22. Specifically, the augmented reality device 30 further includes a display unit, the display unit includes a first display unit and a second display unit, light emitted by the first display unit enters the first coupling-in region 11, light emitted by the second display unit enters the second coupling-in region 21, and after the light is transmitted in the first optical waveguide 10 and the second optical waveguide 20, the light is respectively transmitted out from the first coupling-out region 12 and the second coupling-out region 22.

Wherein, the first brightness distribution is used to represent the brightness distribution of the first light waveguide 10 after being irradiated by the light source and being coupled out from the first light waveguide 10; the second brightness distribution is used to represent the distribution of the light brightness of the second light waveguide 20 after the second light waveguide 20 is irradiated by the light source and is coupled out from the second light waveguide 20. In a specific embodiment, when the first optical waveguide 10 and the second optical waveguide 20 are measured, the first optical waveguide 10 and the second optical waveguide 20 may be divided into different measurement regions in the horizontal direction and the vertical direction. The first luminance profile includes measurement data of the entire measurement area of the first waveguide piece, and the second luminance profile includes measurement data of the entire measurement area of the second waveguide piece. In a specific embodiment, the first brightness distribution and the second brightness distribution may be represented in an array or a matrix, so as to facilitate a user to determine brightness measurement values of different measurement areas.

S200, determining a first luminance distribution direction of the first optical waveguide 10 and a second luminance distribution direction of the second optical waveguide 20 according to the first luminance distribution and the second luminance distribution;

wherein, after acquiring the first brightness distribution, the coupling-out region of the first optical waveguide 10 determines the brightness value of the first brightness along different directions, and similarly, after acquiring the second brightness distribution, the coupling-out region of the second optical waveguide 20 determines the brightness value of the second brightness along different directions, it can be understood that, after the brightness value of the first optical waveguide 10 and the brightness value of the second optical waveguide 20 are added to each other and the brightness observed by the user in the augmented reality device 30 is increased, in order to increase the brightness uniformity of the augmented reality device 30 observed by the user, it is required to ensure that the brightness difference in the observation range of the user is reduced after the brightness distribution of the first optical waveguide 10 and the brightness distribution of the second optical waveguide 20 are added to each other, so when the brightness value of the first optical waveguide 10 in a certain direction and the brightness value of the second optical waveguide 20 in a certain direction are added to each other and then the brightness change rate is lowest, the direction corresponding to the brightness value of the first optical waveguide 10 is the first brightness distribution direction of the first optical waveguide 10, and the direction corresponding to the brightness value of the second optical waveguide 20 is the second brightness distribution direction of the second optical waveguide 20.

S300, determining a first placing manner of the first optical waveguide 10 according to the first brightness distribution direction and determining a second placing manner of the second optical waveguide 20 according to the second brightness distribution direction.

Wherein, after determining the first brightness distribution direction corresponding to the first optical waveguide 10, the tilt angle of the first optical waveguide 10 is adjusted according to the first brightness distribution direction, and similarly, after the second brightness distribution direction corresponding to the second optical waveguide 20 is determined, the inclination angle of the second optical waveguide 20 is adjusted according to the second brightness distribution direction, and the brightness distribution of the first optical waveguide and the second optical waveguide is adjusted, the area with lower brightness of the output light of the first optical waveguide is compensated by the brightness distribution of the second optical waveguide, the area with lower brightness of the output light of the second optical waveguide is compensated by the brightness distribution of the first optical waveguide, therefore, the problems of different brightness of the coupling-out area and non-uniform images caused by optical waveguide design errors and processing errors in the prior art are solved.

Referring to fig. 10, in an alternative embodiment, the step S200 includes:

s210, determining a first luminance change rate in different luminance distribution directions in the first optical waveguide 10 according to the first luminance distribution, and determining a second luminance change rate in different luminance distribution directions in the second optical waveguide 20 according to the second luminance distribution;

wherein the first luminance change rate is a change rate of the luminance value of the first optical waveguide 10 in a straight line direction, and the second luminance change rate is a change rate of the luminance value of the second optical waveguide 20 in a straight line direction. Specifically, when the first optical waveguide 10 includes 2 × 2 measurement regions, first luminance change rates in 4 horizontal directions, 4 vertical directions, and 2 diagonal directions may be determined from the first optical waveguide 10. When the second optical waveguide 20 includes 3 × 3 measurement regions, second luminance change rates in 6 horizontal directions, 6 vertical directions, and 12 oblique line directions may be determined from the second optical waveguide 20.

S220, respectively determining an absolute value of a sum of each of the first luminance change rates and each of the second luminance change rates;

s230, obtaining a first luminance change rate and a second luminance change rate corresponding to a minimum absolute value of the absolute values, and taking a luminance distribution direction corresponding to the first luminance change rate corresponding to the minimum absolute value as the first luminance distribution direction, and taking a luminance distribution direction corresponding to the second luminance change rate corresponding to the minimum absolute value as the second luminance distribution direction.

Specifically, when the absolute value of the sum of the first luminance change rate and the second luminance change rate is large, it indicates that the luminance of the first optical waveguide 10 in the first luminance distribution direction is close to the luminance change direction of the second optical waveguide 20 in the second luminance distribution direction, and when the first optical waveguide 10 is disposed in the first luminance distribution direction and the second optical waveguide 20 is disposed in the second luminance distribution direction, the luminance uniformity of the optical waveguides cannot be compensated because the luminance change rate is large when the first optical waveguide 10 and the second optical waveguide 20 are used in combination. When the absolute value of the sum of the first luminance change rate and the second luminance change rate is minimum, it indicates that the luminance of the first optical waveguide 10 in the first luminance distribution direction is opposite to and changes in a similar degree to the luminance change direction of the second optical waveguide 20 in the second luminance distribution direction, thereby indicating that when the first optical waveguide 10 is disposed in the first luminance distribution direction and the second optical waveguide 20 is disposed in the second luminance distribution direction, it is possible to ensure reduction of luminance unevenness due to unevenness in luminance transmission of the optical waveguides.

In one embodiment of the present invention, the substrate is,

the first optical waveguide 10 may be divided into 3 × 310 mm regions of the same volume, and the second optical waveguide 20 may be divided into 2 × 210 mm regions of the same volume, wherein the number of the measurement regions of the first optical waveguide 10 is 3 in the horizontal direction and 3 in the vertical direction, and the number of the measurement regions of the second optical waveguide 20 is 3 in the horizontal direction and 3 in the vertical direction. Then, the first luminance distribution is {40, 90, 50; 30, 70, 40; 20, 50, 30, and the luminance distribution of the first optical waveguide 10 in the horizontal direction is (40, 50, 90), (30, 70, 40), (20, 50, 30), (90, 50, 40), (40, 70, 30), (30, 50, 20);

the luminances in the vertical direction are (40, 30, 20), (50, 70, 50), (90, 40, 30), (20, 30, 40), (50, 70, 50), (30, 40, 90), respectively;

the luminances in the oblique line directions are (40, 70, 30), (90, 70, 20), (30, 70, 40), (20, 70, 90), respectively; (90, 30), (30, 90); (90, 40), (40, 90); (30, 50), (50, 30); (40, 50), (50, 40);

the number of the measurement regions of the second optical waveguide 20 in the horizontal direction is 2, the number of the measurement regions in the vertical direction is 2, and the number of the measurement regions of the second optical waveguide 20 in the horizontal direction is 2, and the number of the measurement regions in the vertical direction is 2. Then, the second luminance distribution is {60, 100; 55, 80, and the luminance distribution of the first optical waveguide 10 in the horizontal direction is (60, 100), (100, 60), (55, 80), (80, 55);

the luminances in the vertical direction were (60, 55), (100, 80), (55, 60), (80, 100), respectively;

the luminances in the oblique line directions are (60, 80), (80, 60), (100, 55), (55, 100), respectively;

in order to determine the first luminance distribution direction and the second luminance distribution direction according to the luminance test data of the first optical waveguide 10 and the second optical waveguide 20, the luminance distribution of the first optical waveguide 10 in different directions and the luminance distribution of the second optical waveguide 20 in different directions may be determined, specifically, the luminance distribution (30, 50) of the first optical waveguide 10 in the oblique line direction and the luminance distribution (80, 55) of the second optical waveguide 20 in the horizontal direction, and the luminance when the first optical waveguide 10 and the second optical waveguide 20 are used in combination is (110, 105), so that the luminance in each region when the first optical waveguide 10 and the second optical waveguide 20 are used in combination can be ensured to be uniform, and at this time, the direction in which the first optical waveguide 10 measures the luminance distribution is the first luminance distribution direction, the direction in which the second optical waveguide 20 measures the above-described luminance distribution is the second luminance distribution direction.

Referring to fig. 11, in an alternative embodiment, the step S300 includes:

s310, obtaining a first rate of change of the first optical waveguide 10 in the first luminance distribution direction and obtaining a second rate of change of the second optical waveguide 20 in the second luminance distribution direction;

s320, determining a first coupling-out position in the first luminance distribution direction and a second coupling-out position in the second luminance distribution direction according to the first change rate edge and the second change rate;

since the coupling-out region of the optical waveguide is not exactly the same size as the display region of the augmented reality device 30, the optical waveguide may also be disposed obliquely in the augmented reality device 30. Therefore, after determining the first luminance distribution direction of the first optical waveguide 10 and the second luminance distribution direction of the second optical waveguide 20, in order to determine the arrangement manner of the first optical waveguide 10 and the arrangement manner of the second optical waveguide 20, the coupling-out position of the first optical waveguide 10 and the coupling-out position of the second optical waveguide 20 need to be determined.

Specifically, after the first luminance distribution direction and the second luminance distribution direction are determined, a first rate of change in the first luminance distribution direction and a second rate of change in the second luminance distribution direction of the second optical waveguide 20 are obtained. When the measurement area corresponding to the first change rate is larger than the preset coupling-out range, the change rates of different positions need to be calculated in sequence, and the first coupling-out position of the first optical waveguide 10 and the second coupling-out position of the second optical waveguide 20 are determined according to the change rate in the first luminance distribution direction and the change rate in the second luminance distribution direction.

S330, determining a first placing manner of the first optical waveguide 10 according to the first coupling-out position and determining a second placing manner of the second optical waveguide 20 according to the second coupling-out position.

After determining the first luminance distribution direction and the first coupling-out position corresponding to the first optical waveguide 10, the tilt angle of the first optical waveguide 10 is adjusted according to the first luminance distribution direction, and the relative position of the first optical waveguide 10 in the left-eye display area on the augmented reality device 30 is determined according to the first coupling-out position, and similarly, after determining the second luminance distribution direction and the second coupling-out position corresponding to the second optical waveguide 20, the tilt angle of the second optical waveguide 20 is adjusted according to the second luminance distribution direction, and the relative position of the second optical waveguide 20 in the right-eye display area on the augmented reality device 30 is determined according to the second coupling-out position.

Referring to fig. 12, in an alternative embodiment, the step S320 includes:

s340, determining a first coupling-out position of the first optical waveguide 10 and a second coupling-out position of the second optical waveguide 20 according to the first change rate, the second change rate and a preset coupling-out range.

The preset coupling-out range refers to a range in the augmented reality device 30 for facilitating a user to observe virtual information, and specifically, light emitted by a display unit in the augmented reality device 30 passes through the optical waveguide, and then exits from the preset coupling-out range and enters human eyes.

Specifically, after the first luminance distribution direction and the second luminance distribution direction are determined, a first rate of change in the first luminance distribution direction and a second rate of change in the second luminance distribution direction of the second optical waveguide 20 are obtained. Similarly, when the measurement area corresponding to the first change rate is greater than the preset coupling-out range, the change rates of different positions need to be sequentially calculated according to the preset coupling-out range, and when the measurement area corresponding to the second change rate is greater than the preset coupling-out range, the change rates of different positions need to be sequentially calculated according to the preset coupling-out range, and the first coupling-out position of the first optical waveguide 10 and the second coupling-out position of the second optical waveguide 20 are determined according to the change rate in the first luminance distribution direction and the change rate in the second luminance distribution direction.

Referring to fig. 13, in an alternative embodiment, the step S340 includes:

s341, determining a first change rate range and a second change rate range according to the first change rate, the second change rate and the preset coupling-out range;

s342, determining the first coupling-out position of the first optical waveguide 10 and the second coupling-out position of the second optical waveguide 20 according to the first change rate range and the second change rate range.

When the coupling-out area of the optical waveguide is larger than the display area of the augmented reality device 30, in order to obtain better brightness uniformity of the display area in the augmented reality device 30, after determining the first brightness distribution direction of the first optical waveguide 10 and the second brightness distribution direction of the second optical waveguide 20, a corresponding first coupling-out position in the first brightness distribution direction and a corresponding second coupling-out position in the second brightness distribution direction need to be determined. In particular, since the coupling-out area is larger than the preset coupling-out range, after the first luminance distribution direction is determined, the first coupling-out position also needs to be determined in the first luminance distribution direction. Specifically, different range sections are divided from the first optical waveguide 10 in the first luminance distribution direction according to the preset coupling-out range, the range size of each range section is the same as the size of the preset coupling-out range, the first change rate range is obtained by calculating the luminance change rate for each range section, and the second change rate range is obtained by processing the luminance data of the second optical waveguide 20 in the second luminance distribution direction in the same manner.

Referring to fig. 14, in a preferred embodiment, the step S342 includes:

s3421, determining an absolute value of a sum of the first rate range and the second rate range;

s3422, when the absolute value of the sum of the first change rate range and the second change rate range is minimum, determining the position corresponding to the first change rate range as the first coupling-out position, and determining the position corresponding to the second change rate range as the second coupling-out position.

After determining the set of the first rate range and the set of the second rate range, calculating elements of the set of the first rate range and elements of the set of the second rate range respectively, wherein when an absolute value of the sum of the first rate range and the second rate range is minimum, a position corresponding to the first rate range is the first coupling-out position, and a position corresponding to the second rate range is the second coupling-out position.

In a particular embodiment of the method of the present invention,

a luminance value distribution of the first optical waveguide 10 in the first luminance distribution direction is (20, 30, 50, 60, 70, 80, 100, 120, 150), a luminance value distribution of the second optical waveguide 20 in the second luminance distribution direction is (180, 150, 130, 90, 70, 60, 40, 30, 25, 20),

then the first rate of change is (10, 20, 10, 10, 10, 20, 20, 30);

the second rate of change is (-30, -20, -40, -20, -10, -20, -10, -5, -5);

when the preset outcoupling range includes 3 measurement regions,

then the first range of rates of change includes: (10, 20, 10), (20, 10, 10), (10, 10, 20), (10, 20, 20), (20, 20, 30);

the second range of rates of change includes: (-30, -20, -40), (-20, -40, -20), (-40, -20, -10), (-20, -10, -20), (-10, -20, -10), (-20, -10), -5), (-10, -5, -5).

And adding the elements in the first rate range and the elements in the second rate range respectively, wherein when the first rate range is (10, 20, 10) and the second rate range is (-10, -20, -10), and the absolute value of the sum of the first rate range and the second rate range is the smallest, the corresponding position is the first coupling-out position of the first optical waveguide 10 when the first rate range is (10, 20, 10), and the corresponding position is the second coupling-out position of the second optical waveguide 20 when the second rate range is (-10, -20, -10).

Referring to fig. 15, in an alternative embodiment, the step S100 includes:

s110, obtaining a first luminance measurement value of the first optical waveguide 10 and a second luminance measurement value of the second optical waveguide 20, where the first luminance measurement value includes luminance values of different measurement regions of the first optical waveguide 10, and the second luminance measurement value includes luminance values of different regions of the second optical waveguide 20;

s120, adding the luminance values of the plurality of first luminance measurement values according to the measurement region to determine the first luminance distribution, and adding the luminance values of the plurality of second luminance measurement values according to the measurement region to determine the second luminance distribution.

When the first optical waveguide 10 is detected, the irradiation direction of the light source points to the coupling-in region of the first optical waveguide 10, and the detecting unit is disposed in the coupling-out direction of the first optical waveguide 10 and is configured to detect the brightness of light from the coupling-out region of the first optical waveguide 10. Specifically, the optical waveguide includes a plurality of measurement regions in the horizontal direction and the vertical direction, and light emitted from the light source is transmitted to the measurement device after passing through the optical waveguide, and the measurement device measures luminance values of different measurement regions.

It can be understood that, according to the usage of the first optical waveguide 10, when detecting the brightness of the first optical waveguide 10, the light source may be a multi-color light source, such as a white light source or a violet light source, or may also be a single-color light source, such as a red light source or a blue light source or a green light source, and in addition, since the white light may be decomposed into red light, blue light, and green light, when the brightness distributions of the optical waveguide are measured by using the red light source, the blue light source, and the green light source, respectively, the brightness distributions obtained by measuring the red light source, the blue light source, and the green light source may be added according to the measurement area to obtain the brightness distribution of the white light. Similarly, when the second luminance distribution of the second optical waveguide 20 is measured, the measurement method is the same as that of the first optical waveguide 10. Of course, the measurement method when measuring the luminance distributions of the first optical waveguide 10 and the second optical waveguide 20 is not limited to this, and in another embodiment, the measurement method may be to simultaneously measure the first optical waveguide 10 and the second optical waveguide 20 by displaying pictures.

In an optional embodiment, a straight line where the first luminance distribution direction is located passes through a central position of the first optical waveguide 10, and a straight line where the second luminance distribution direction is located passes through a central position of the second optical waveguide 20, in a specific embodiment, a coupling-out region of the first optical waveguide 10 is the central position of the first optical waveguide 10, and a coupling-out region of the second optical waveguide 20 is the central position of the second optical waveguide 20, so as to avoid a problem that the optical waveguide interferes with other elements of the augmented reality device 30 due to an excessively large tilt angle of the optical waveguide.

To achieve the above object, the present application provides a uniformity compensation apparatus applied to an optical waveguide, the uniformity compensation apparatus including: memory, processor and computer program stored on the memory and executable on the processor, the computer program, when executed by the processor, implementing the steps of the uniformity compensation method according to any of the embodiments described above.

Referring to fig. 3 to 8, to achieve the above object, the present application provides an optical waveguide system, which includes a first optical waveguide 10 and a second optical waveguide 20, wherein the first optical waveguide 10 includes a first coupling-in region 11 and a first coupling-out region 12, and the second optical waveguide 20 includes a second coupling-in region 21 and a second coupling-out region 22;

the first coupling-in region 11 of the first optical waveguide 10 is located at the left side of the first coupling-out region 12 of the first optical waveguide 10, and the second coupling-in region 21 of the second optical waveguide 20 is located at the right side of the second coupling-out region 22 of the second optical waveguide 20;

optionally, the first coupling-in region 11 of the first optical waveguide 10 is located at the upper side of the first coupling-out region 12 of the first optical waveguide 10, and the second coupling-in region 21 of the second optical waveguide 20 is located at the lower side of the second coupling-out region 22 of the second optical waveguide 20;

optionally, the first coupling-in region 11 of the first optical waveguide 10 is located at a corner of the first coupling-out region 12 of the first optical waveguide 10, the second coupling-in region 21 of the second optical waveguide 20 is located at a diagonal side of the second coupling-out region 22 of the second optical waveguide 20, and the first coupling-in region 11 of the first optical waveguide 10 and the second coupling-in region 21 of the second optical waveguide 20 are arranged along a diagonal line;

it is understood that the arrangement direction of the first optical waveguide 10 and the arrangement direction of the second optical waveguide 20 are not limited to the above embodiment, and in other embodiments, the first optical waveguide 10 and the second optical waveguide 20 may be arranged in any direction, so that the first optical waveguide 10 and the second optical waveguide 20 can compensate for the uneven brightness distribution of a single optical waveguide after being combined for use.

In order to achieve the above object, the present application provides an augmented reality device 30, where the augmented reality device 30 includes a display unit and an optical waveguide system as described in any one of the above embodiments, the optical waveguide system includes a first optical waveguide 10 and a second optical waveguide 20, and light emitted from the display unit enters the optical waveguide system from a coupling-in region of the optical waveguide system and is transmitted to human eyes after being emitted from a coupling-out region of the optical waveguide system.

Referring to fig. 3 to 8, the first coupling-in region 11 of the first optical waveguide 10 is located at the left side of the first coupling-out region 12 of the first optical waveguide 10, and the second coupling-in region 21 of the second optical waveguide 20 is located at the right side of the second coupling-out region 22 of the second optical waveguide 20;

optionally, the first coupling-in region 11 of the first optical waveguide 10 is located at the upper side of the first coupling-out region 12 of the first optical waveguide 10, and the second coupling-in region 21 of the second optical waveguide 20 is located at the lower side of the second coupling-out region 22 of the second optical waveguide 20;

optionally, the first coupling-in region 11 of the first optical waveguide 10 is located at a corner of the first coupling-out region 12 of the first optical waveguide 10, the second coupling-in region 21 of the second optical waveguide 20 is located at a diagonal side of the second coupling-out region 22 of the second optical waveguide 20, and the first coupling-in region 11 of the first optical waveguide 10 and the second coupling-in region 21 of the second optical waveguide 20 are arranged along a diagonal line;

it is understood that the arrangement direction of the first optical waveguide 10 and the arrangement direction of the second optical waveguide 20 are not limited to the above embodiment, and in other embodiments, the first optical waveguide 10 and the second optical waveguide 20 may be arranged in any direction, so that the first optical waveguide 10 and the second optical waveguide 20 can compensate for the uneven brightness distribution of a single optical waveguide after being combined for use.

To achieve the above object, the present application proposes a computer-readable storage medium having a uniformity compensation program stored thereon, the abnormality detection program, when executed by a processor, implementing the uniformity compensation method according to any one of the above embodiments.

In some alternative embodiments, the processor may be a Central Processing Unit (CPU), other general purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other Programmable logic device, a discrete Gate or transistor logic device, a discrete hardware component, or the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

The storage may be an internal storage unit of the device, such as a hard disk or a memory of the device. The memory may also be an external storage device of the device, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), etc. provided on the device. Further, the memory may also include both internal and external storage units of the device. The memory is used for storing the computer program and other programs and data required by the device. The memory may also be used to temporarily store data that has been output or is to be output.

It will be apparent to those skilled in the art that, for convenience and brevity of description, only the above-mentioned division of the functional units and modules is illustrated, and in practical applications, the above-mentioned function distribution may be performed by different functional units and modules according to needs, that is, the internal structure of the apparatus is divided into different functional units or modules to perform all or part of the above-mentioned functions. Each functional unit and module in the embodiments may be integrated in one processing unit, or each unit may exist alone physically, or two or more units are integrated in one unit, and the integrated unit may be implemented in a form of hardware, or in a form of software functional unit. In addition, specific names of the functional units and modules are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present application. The specific working processes of the units and modules in the system may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.