Simulation method and device of AR optical system, medium and electronic equipment

Abstract

The invention discloses a simulation method and device of an AR optical system, a medium and electronic equipment. The method comprises the steps of obtaining a header file and an initial source file; based on the Kogelnik coupling wave theory, the header file and the initial source file, obtaining a target file, and importing the target file into ZEMAX; in a ZEMAX sequence mode, calling the target file to generate a holographic waveguide assembly; obtaining a collimation assembly according to preset parameters of the display and the holographic waveguide assembly; and connecting a preset display, the collimation assembly and the holographic waveguide assembly to obtain the target AR optical system. Compared with the prior art, through the Kogelnik coupling wave theory and the ZEMAX, under the sequence mode of the ZEMAX, the simulation of the volume holographic grating and the AR optical system is realized by utilizing the self-defined surface type, the simulation difficulty is reduced, the simulation calculation efficiency is improved, the time consumption of subsequent design is reduced, and the simulation systematicness, integrity and quality are improved; and thus, the optical performance of the optical system in the AR equipment is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of projection display, in particular to a simulation method and device of AR optical system, medium and electronic equipment. BACKGROUND

[0002] With the rapid development of optical technology, the demand for augmented reality head-mounted display (AR) is also increasing, among which, AR equipped with holographic waveguide assembly is favored by users. The most important element in the holographic waveguide assembly is the out / in coupling element composed of volume holographic grating, and the simulation of the characteristics of the volume holographic grating is particularly important in the design process. In the prior art, programming language or optical software is usually used for simulation, which is relatively cumbersome and cannot well simulate the diffraction efficiency of the volume holographic grating and the overall characteristics of the optical system, thereby affecting the optical performance of the augmented reality head-mounted display.

[0003] In view of this, it is necessary to provide a simulation method and device of AR optical system, medium and electronic equipment to solve the above problems. SUMMARY

[0004] In view of the deficiencies in the prior art, the present application provides a simulation method and device of AR optical system, medium and electronic equipment, which can effectively solve the problem that the simulation process of AR optical system cannot well simulate the diffraction efficiency of the volume holographic grating and the overall characteristics of the optical system.

[0005] To achieve the above purpose, the first aspect of the present application provides a simulation method of AR optical system, which comprises: Based on Kogelnik coupling wave theory, header file and initial source file, a target file is obtained, and the target file is imported into ZEMAX; In the sequence mode of ZEMAX, the target file is called to generate a holographic waveguide assembly; According to the parameters of the preset display and the holographic waveguide assembly, a collimating assembly is obtained; The preset display, collimating assembly and holographic waveguide assembly are connected to obtain a target AR optical system.

[0006] In a preferred embodiment, the step of obtaining a target file based on Kogelnik coupling wave theory, header file and initial source file and importing the target file into ZEMAX comprises: Based on Kogelnik coupling wave theory, the initial source file is configured to obtain a target source file; The header file and the target source file are compiled to obtain a target file; The target file is imported into ZEMAX.

[0007] In a preferred embodiment, the step of configuring the initial source file to obtain the target source file based on the Kogelnik coupled-wave theory comprises: locating a first parameter in the initial source file; configuring the first parameter based on the Kogelnik coupled-wave theory to obtain the target source file.

[0008] In a preferred embodiment, the step of calling the target file to generate the holographic waveguide assembly in the sequence mode of ZEMAX comprises: calling the target file to generate a custom volume hologram surface in the sequence mode of Zemax; generating a volume holographic grating according to the custom volume hologram surface and the holographic diffraction theory; superimposing the volume holographic grating to obtain a multiple composite grating by extension; combining the multiple composite grating with a preset parallel waveguide element to obtain the holographic waveguide assembly.

[0009] In a preferred embodiment, the step of superimposing the volume holographic grating to obtain a multiple composite grating by extension comprises: performing angular bandwidth extension on the volume holographic grating to obtain an extended grating; performing wavelength extension on the extended grating to obtain the multiple composite grating.

[0010] In a preferred embodiment, the step of obtaining the collimating assembly according to the parameters of the preset display and the holographic waveguide assembly comprises: obtaining parameters of the collimating assembly according to the parameters of the preset display and the holographic waveguide assembly; obtaining the collimating assembly according to the parameters of the collimating assembly.

[0011] In a preferred embodiment, the step of connecting the preset display, the collimating assembly and the holographic waveguide assembly to obtain the target AR optical system comprises: determining parameters of the AR optical system according to the parameters of the preset display; connecting the display, the collimating assembly and the holographic waveguide assembly to obtain an initial AR optical system; optimizing the initial AR optical system in ZEMAX according to the parameters of the AR optical system to obtain the target AR optical system.

[0012] The second aspect of the application provides an AR optical system simulation device, which comprises: a first acquisition module configured to acquire a header file and an initial source file; a conversion module configured to obtain a target file based on the Kogelnik coupled-wave theory, the header file and the initial source file, and import the target file into ZEMAX; The first simulation module is configured to call the target file to generate the holographic waveguide assembly in a sequence mode of ZEMAX. The second simulation module is configured to obtain the collimating assembly according to the preset parameters of the display and the holographic waveguide assembly. The adjusting module is configured to connect the preset display, the collimating assembly and the holographic waveguide assembly to obtain the target AR optical system.

[0013] The third aspect of the present application provides a computer readable storage medium storing a computer program, and the computer program is executed by a processor to implement the steps of the simulation method of the AR optical system according to any one of the above embodiments.

[0014] The fourth aspect of the present application provides an electronic device including a memory, a processor and a computer program stored in the memory and executable on the processor, and the processor implements the steps of the simulation method of the AR optical system according to any one of the above embodiments when executing the computer program.

[0015] The present application has the following beneficial effects: the present application can obtain a target file for generating a custom volume holographic surface through Kogelnik coupling wave theory and ZEMAX, generate a volume holographic grating through the custom volume holographic surface in a sequence mode of ZEMAX, and simulate the holographic waveguide assembly and the collimating assembly based on the volume holographic grating, so as to simulate the diffraction efficiency and bandwidth of the volume holographic grating and the overall simulation of the AR optical system, improve the simulation efficiency, and improve the system, completeness and simulation quality of the simulation, and further improve the optical performance of the optical system in the AR device. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 The simulation method of the AR optical system according to the embodiment of the present application is shown in the flowchart.

[0017] Figure 2 The module schematic diagram of the simulation device of the AR optical system according to the embodiment of the present application is shown.

[0018] Figure 3 The structure schematic diagram of the electronic device according to the embodiment of the present application is shown. DETAILED DESCRIPTION

[0019] In the present application, the terms "provided with", "connected with" and "connected" should be understood in a broad sense. For example, it can be fixed connection, detachable connection or integral structure; it can be mechanical connection or electrical connection; it can be direct connection or indirect connection through an intermediate medium, or internal communication between two devices, elements or components. Those skilled in the art can understand the specific meaning of the above terms in the present application according to the specific circumstances.

[0020] The terms "first", "second", "third", etc. are used only for descriptive purposes and are not to be construed as indicating or implying relative importance or an ordered ranking of the indicated technical features. Thus, features defined with "first", "second", etc. can include at least one of the features explicitly or implicitly. In the description of the present application, the meaning of "a plurality of" is at least two, for example two, three, etc., unless otherwise explicitly and specifically limited.

[0021] In addition, in addition to being used to represent the orientation or positional relationship, the above-mentioned partial terms can also be used to represent other meanings, for example, the term "upper" can also be used to represent a certain dependent relationship or connection relationship in some cases. For those skilled in the art, the specific meaning of these terms in the present application can be understood according to the specific situation.

[0022] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application is further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application and do not limit the present application.

[0023] Compared with other traditional VR or AR optical systems, the design and simulation method of the holographic waveguide AR optical system is relatively simple, but the simulation calculation is relatively complex. Volume holographic grating is one of the most important elements in the holographic waveguide optical system, which needs to be simulated and the overall performance of the optical system also needs to be considered. The existing simulation method is relatively cumbersome, and cannot relatively better design and simulate the diffraction efficiency of the volume holographic grating and the overall optical system, the simulation calculation efficiency is relatively low, and the quality of the simulation is relatively low.

[0024] The following is the content of the first aspect of the present application: Please refer to Figure 1 The embodiment provides an AR optical system simulation method, and the steps thereof include: S1, obtaining a header file and an initial source file; S2, based on the Kogelnik coupling wave theory, the header file and the initial source file, obtaining a target file, and importing the target file into ZEMAX.

[0025] Wherein, ZEMAX is a software for optical product design and simulation. The header file and the initial source file are C++ files in the initial state for generating the target file. The target file is used to generate a custom volume holographic surface in ZEMAX.

[0026] In the simulation of the AR optical system of the holographic waveguide, the simulation of the volume holographic grating is particularly important, and the volume holographic grating with a self-defined surface shape can better achieve the simulation of the volume holographic grating. In the sequence mode of ZEMAX, ZEMAX allows the generation of a self-defined volume holographic surface through a target file, and the generation of the target file requires two C++ files, namely a header file for generating the target file and an initial source file.

[0027] After obtaining the header file and the initial source file, based on the Kogelnik coupling wave theory, the specific function parameters in the initial source file are configured to adjust the diffraction efficiency, diffraction direction and thickness of the volume holographic grating generated by the self-defined volume holographic surface; the header file and the adjusted initial source file are compiled to obtain a target file for generating a self-defined surface shape, and the target file is imported into the dynamic link library of ZEMAX.

[0028] S3, in the sequence mode of ZEMAX, the target file is called to generate a holographic waveguide component; S4, according to the parameters of the preset display and the holographic waveguide component, a collimating component is obtained; S5, the preset display, the collimating component and the holographic waveguide component are connected to obtain a target AR optical system.

[0029] Among them, the display, the collimating component and the holographic waveguide component are the core components of the AR optical system; the collimating component is used to guide the light emitted by the display into the holographic waveguide component, and the holographic waveguide component is used to transmit the light to the user's eye.

[0030] After importing the target file into ZEMAX, in the sequence mode of ZEMAX, the target file is called to generate a volume holographic surface, and combined with the holographic diffraction theory, a volume holographic grating is generated, and the obtained volume holographic grating is superimposed and expanded to obtain an in-out coupling grating constituting the holographic waveguide component; then combined with the preset flat waveguide component, the holographic waveguide component is obtained.

[0031] After obtaining the holographic waveguide component, according to the parameters of the preset display and the determined holographic waveguide component, the parameters of the collimating component are determined, and then in ZEMAX, the modeling of the collimating component is realized according to the parameters of the obtained collimating component.

[0032] After the simulation of the holographic waveguide component and the collimating component is completed, the display, the collimating component and the holographic waveguide component are connected, and the overall optimization of the optical system is carried out in ZEMAX to obtain the target AR optical system.

[0033] It can be understood that the application can obtain a target file for generating a custom volume holographic surface by Kogelnik coupling wave theory and ZEMAX, generate a volume holographic grating by the custom volume holographic surface in a sequence mode of ZEMAX, and simulate the holographic waveguide assembly and the collimation assembly based on the volume holographic grating, so as to simulate the diffraction efficiency and bandwidth of the volume holographic grating and the overall simulation of the AR optical system, improve the simulation efficiency, improve the system, completeness and simulation quality of the simulation, and further improve the optical performance of the optical system in the AR equipment.

[0034] Further, in one embodiment, based on the Kogelnik coupling wave theory, the header file and the initial source file, the step S2 of obtaining the target file and importing the target file into ZEMAX includes: S21, based on the Kogelnik coupling wave theory, configuring the initial source file to obtain a target source file; S22, compiling the header file and the target source file to obtain the target file; S23, importing the target file into ZEMAX.

[0035] Specifically, after obtaining the header file and the source file, based on the Kogelnik coupling wave theory, according to the design requirements, the parameter information in the initial source file affecting the type and surface characteristics of the custom volume holographic surface is configured to obtain the target source file. After obtaining the target source file after the configuration, the header file and the target source file are compiled and converted to obtain the target file, and then the target file is imported into ZEMAX, and the preparation work for the volume holographic grating simulation is completed.

[0036] In a preferred embodiment, the step S21 of configuring the initial source file based on the Kogelnik coupling wave theory to obtain the target source file includes: S211, positioning a first parameter in the initial source file; S212, based on the Kogelnik coupling wave theory, configuring the first parameter to obtain the target source file.

[0037] The first parameter is the parameter information in the initial source file affecting the type and surface characteristics of the volume holographic surface, and the first parameter is a User Defined Surfaces 3 function. By configuring Case 1 and Case 5 in the User Defined Surfaces 3 function, the initial source file can be converted into the target source file.

[0038] The volume holographic grating can be divided into a transmission type volume holographic grating and a reflection type volume holographic grating. In order to facilitate the type judgment of the volume holographic surface, two coherent lights in a point light source and without aberration can be used. According to the Kogelnik coupling wave theory, when the thickness of the medium increases to a certain extent, the high-order diffraction will gradually disappear, only the 0th order and the 1st order (-1st order) are reserved, that is, the output parameters of the self-defined volume holographic grating are the diffraction efficiency and the diffraction direction of the 1st order diffraction light.

[0039] The parameters that need to be configured in the User Defined Surfaces 3 function include the directions of the reference light and the signal light, the refractive index of the medium of the volume holographic grating, the refractive index modulation and the thickness of the material, the diffraction efficiency and the diffraction direction of the 1st order diffraction light. Case 1 is responsible for configuring the parameters in the volume holographic grating, and is mainly used for defining the directions and the wavelengths of the reference light and the signal light, the average refractive index of the medium of the volume holographic grating, the refractive index modulation and the thickness of the material. Case 5 is responsible for calculating the diffraction efficiency and the diffraction direction of the 1st order diffraction light by calling the parameter information of case 1 and based on the Kogelnik coupling wave theory.

[0040] In the sequence mode of ZEMAX, only the 1st order diffraction light will be emitted after the light passes through the volume holographic grating, the direction cosine of the 1st order diffraction light can be returned to ZEMAX through the first transfer function, and the diffraction efficiency of the 1st order diffraction light can be returned to ZEMAX through the second transfer function. By using the universal chart function and the IMAE operand of ZEMAX, the diffraction efficiency can be read.

[0041] After the User Defined Surfaces 3 function is configured by combining the Kogelnik coupling wave theory, the target source file can be obtained, and the header file and the target source file are compiled and converted, so that the target file is generated.

[0042] It can be understood that, by combining the Kogelnik coupling wave theory, the configuration of the User Defined Surfaces 3 function in the initial source file can obtain the target file of the self-defined volume holographic surface, which prepares for the subsequent obtaining of the self-defined volume holographic grating and the simulation of the diffraction efficiency and the bandwidth of the volume holographic grating.

[0043] Further, in an embodiment, in the sequence mode of ZEMAX, the step S3 of calling the target file to generate the holographic waveguide assembly includes: S31, in the sequence mode of Zemax, calling the target file to generate the self-defined volume holographic surface; S32, generating the volume holographic grating according to the self-defined volume holographic surface and the holographic diffraction theory; S33, superimposing the volume holographic grating to expand to obtain a multiple composite grating. S34, combine the multiple composite grating with the preset parallel waveguide to obtain a holographic waveguide assembly.

[0044] The multiple composite grating comprises an incoupling grating and an outcoupling grating, and the incoupling grating and the outcoupling grating are respectively an import component and an export component of the holographic waveguide assembly; the parallel waveguide is an intermediate transmission component of the holographic waveguide assembly; in order to ensure that the propagation angle of the image light wave in the waveguide satisfies internal full emission, the angle of the diffracted light after the light passes through the incoupling grating is greater than the total reflection angle of the parallel waveguide.

[0045] After the target file is imported into ZEMAX, in the sequence mode of ZEMAX, the target file is called from the dynamic link library according to the type of the determined volume holographic surface, and then the corresponding custom volume holographic surface is generated. After obtaining the custom volume holographic surface, the simulation of the volume holographic grating is obtained by combining the holographic diffraction theory.

[0046] The diffraction angle bandwidth of a single volume holographic grating is limited, and the diffraction efficiency in the angle bandwidth is uneven, which is difficult to meet the requirements of the AR optical system on the field of view and the imaging uniformity, so it is necessary to expand the volume holographic grating. After obtaining a single volume holographic grating, the diffraction efficiency curve of the volume holographic grating under the Bragg condition can be calculated. Specifically, the IMAE operation number of ZEMAX is used to scan the angle and wavelength of the incident light, and then the change curve of the diffraction efficiency with the incident angle and the wavelength is obtained. It is easy to understand that obtaining the diffraction efficiency curve of the volume holographic grating is helpful to analyze the relationship between the diffraction efficiency characteristics of the volume holographic grating and the bandwidth and the wavelength, and to prepare for the subsequent expansion of the volume holographic grating.

[0047] After obtaining the volume holographic grating and the corresponding diffraction efficiency curve, the volume holographic grating is expanded in a multiple superposition manner, and then a multiple composite grating is obtained. Then, the obtained multiple composite grating is combined with the preset parallel waveguide, and then a holographic waveguide assembly is obtained.

[0048] In a preferred embodiment, the step S33 of superimposing the volume holographic grating to obtain the multiple composite grating comprises: S331, expanding the angle bandwidth of the volume holographic grating to obtain an expanded grating; S332, expanding the wavelength of the expanded grating to obtain the multiple composite grating.

[0049] After obtaining the volume holographic grating and the corresponding diffraction efficiency curve, the angle bandwidth expansion and the wavelength expansion of the volume holographic grating can be realized in the multiple grating composite or superposition manner in the multiple structure editor of ZEMAX.

[0050] In the case of keeping the surface grating period of the volume holographic grating unchanged, a plurality of volume holographic gratings are exposed to two coherent lights with the same wavelength but different incident angles to make the multiple gratings coincide, so as to realize the expansion of the angle bandwidth of the volume holographic grating and obtain an expanded grating. Specifically, the diffraction angles corresponding to different incident angles can be calculated according to the grating formula, then in the multiple structure editor of ZEMAX, the field angle of the system can be controlled by using the YFIE operation number, and the coordinates of the reference light and the signal corresponding to different field angles can be adjusted by using the PRAM operation number, so as to realize the expansion of the angle bandwidth of the volume holographic grating.

[0051] It can be understood that, due to different incident angles in the exposure process, the diffraction efficiency curve is shifted to the left or right, so as to improve the diffraction efficiency, and the diffraction efficiency of the expanded grating is the sum of the diffraction efficiencies of the volume holographic gratings.

[0052] After obtaining the expanded grating, the wavelength expansion of the expanded grating can also be realized by the multiple structure editing of ZEMAX. Specifically, in the multiple structure editor of ZEMAX, the independent propagation of red light, green light and blue light in different wave bands can be controlled by using the WAVE operation number and the THIC operation number, and the wavelengths of the coherent lights in different waveguide layers can be adjusted by using the PRAM operation number, so as to realize the wavelength expansion of the expanded grating and obtain a multiple composite grating.

[0053] Further, in an embodiment, according to the preset parameters of the display and the holographic waveguide assembly, the step S4 of obtaining the collimating assembly comprises: S41, obtaining the parameters of the collimating assembly according to the preset parameters of the display and the holographic waveguide assembly; S42, obtaining the collimating assembly according to the parameters of the collimating assembly.

[0054] The collimating assembly is an intermediate transmission assembly between the display and the holographic waveguide assembly, and the parameters of the collimating assembly are affected by the display and the holographic waveguide assembly.

[0055] In the embodiment, the display needs to have the characteristics of small volume, light weight, high luminous efficiency and high resolution at the same time. Specifically, in a preferred implementation, the display is selected as a Micro-LED with a diagonal line of 0.13", and the three-color peak wavelengths of RGB are 630 nm, 550 nm and 470 nm, respectively.

[0056] ​After the parameters of the display are determined and the holographic waveguide assembly is obtained, since the light-emitting angle of the Micro-LED is relatively large and the light-emitting intensity changes significantly with the angle, in order to ensure the uniformity of the AR optical system illumination and the compactness of the structure, the parameters of the collimating assembly need to be determined according to the light waveguide characteristics of the holographic light waveguide assembly and the parameters of the display. After the parameters of the collimating assembly are obtained, the reasonable structure of the collimating assembly is preliminarily determined in ZEMAX according to the obtained parameters of the collimating assembly, and then the coma, aberration, field curvature and distortion and other parameters of the preliminarily determined collimating assembly are optimized, and the simulation of the collimating assembly is obtained. In a preferred embodiment, the F number of the collimating system is 4, the half field angle is 9.5°, and the focal length is 9.8 mm.

[0057] Further, in an embodiment, the step S5 of obtaining the target AR optical system by connecting the preset display, collimating assembly and holographic waveguide assembly includes: S51, determining the parameters of the AR optical system according to the parameters of the preset display; S52, connecting the display, collimating assembly and holographic waveguide assembly to obtain an initial AR optical system; S53, optimizing the initial AR optical system in ZEMAX according to the parameters of the AR optical system to obtain the target AR optical system.

[0058] After the parameters of the display are obtained, the basic parameters of the AR optical system can be determined by combining the parameters of the display and the visual characteristics of the human eye. After the 90.13" Micro-LED, whose RGB three-color peak wavelengths are 630 nm, 550 nm and 470 nm, is combined with the characteristics of the human eye, the exit pupil distance of the AR optical system is preliminarily determined to be 15 mm, the pupil diameter is 4 mm, the field of view is 19 degrees, and the single-layer waveguide thickness is 0.6 mm.

[0059] After the parameters of the AR optical system are determined, the display, collimating assembly and holographic waveguide assembly are connected to obtain an initial AR optical system. Since the holographic waveguide optical system utilizes the total reflection characteristics of the waveguide and the diffraction characteristics of the volume holographic grating to realize the transmission of image information, when the light wave passes through the holographic waveguide assembly, no additional off-axis aberration will be introduced in the output image, but the chromatic aberration and diffraction efficiency and other parameters of the initial AR optical system can be optimized.

[0060] After the initial AR optical system is obtained, the spherical aberration and the diffraction efficiency of the initial AR optical system can be optimized and adjusted in ZEMAX according to the parameters of the AR optical system to obtain the target AR optical system. Specifically, in ZEMAX, the spherical aberration of the initial AR optical system is corrected, and the overall image quality of the optical system is evaluated. After the spherical aberration of the initial AR optical system meets the requirements, the diffraction efficiency of the initial AR optical system is controlled by using IMAE operation numbers to optimize the diffraction efficiency to meet the requirements, and thus the target AR optical system is obtained.

[0061] It can be understood that by connecting the display, the collimation assembly and the holographic waveguide assembly, the initial AR optical system can be obtained, and the initial AR optical system is optimized to obtain the target AR optical system, which realizes the simulation of the overall AR optical system, improves the system and completeness of the simulation, improves the quality of the simulation, and thus improves the optical performance of the optical system in the AR device.

[0062] In summary, by using the Kogelnik coupling wave theory and ZEMAX, the target file for generating a custom volume holographic surface can be obtained. In the sequence mode of ZEMAX, the volume holographic grating is generated by the custom volume holographic surface, and the simulation of the holographic waveguide assembly and the collimation assembly is realized based on the volume holographic grating. The diffraction efficiency and bandwidth of the volume holographic grating can be simulated, and the overall simulation of the AR optical system can be realized. The efficiency of the simulation is improved, and the system, completeness and quality of the simulation are improved, and thus the optical performance of the optical system in the AR device is improved.

[0063] The second aspect of the present application provides an AR optical system simulation device, please refer to Figure 2 The AR optical system simulation device comprises: A first acquisition module 10 is configured to acquire a header file and an initial source file. A conversion module 20 is configured to obtain a target file based on the Kogelnik coupling wave theory, the header file and the initial source file, and import the target file into ZEMAX. A first simulation module 30 is configured to call the target file in the sequence mode of ZEMAX to generate a holographic waveguide assembly. A second simulation module 40 is configured to obtain a collimation assembly according to the parameters of a preset display and the holographic waveguide assembly. An adjustment module 50 is configured to connect the preset display, the collimation assembly and the holographic waveguide assembly to obtain a target AR optical system.

[0064] It is understandable that the simulation device of this AR optical system can realize the generation of volume holographic gratings from custom volume holographic surfaces, and realize the simulation of holographic waveguide components and collimation components based on volume holographic gratings. It can realize the simulation of diffraction efficiency and bandwidth of volume holographic gratings, as well as the simulation of the overall AR optical system, which improves the efficiency of simulation, the systematicness, completeness and quality of simulation, and thus improves the optical performance of the optical system in AR devices.

[0065] A third aspect of the present invention provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the steps of the aforementioned simulation method for an AR optical system.

[0066] A fourth aspect of the present invention provides an electronic device, such as... Figure 3 As shown, the electronic device includes a memory 60, a processor 70, and a computer program 80 stored in the memory 60 and executable on the processor. When the processor 70 executes the computer program, it implements the steps of the aforementioned simulation method for the AR optical system.

[0067] The above are merely specific embodiments of this application. It should be noted that those skilled in the art can make several improvements and modifications without departing from the principles of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A simulation method for an AR optical system, characterized in that, include: Obtain the header file and initial source file; Based on Kogelnik coupled-wave theory, the header file, and the initial source file, the target file is obtained and then imported into ZEMAX. In ZEMAX's sequence mode, the target file is invoked to generate a holographic waveguide component; Based on the preset parameters of the display and the holographic waveguide component, a collimation component is obtained; By connecting the preset display, the collimation component, and the holographic waveguide component, a target AR optical system is obtained.

2. The simulation method for the AR optical system according to claim 1, characterized in that, The steps of obtaining the target file based on Kogelnik coupled-wave theory, the header file, and the initial source file, and then importing the target file into ZEMAX, include: Based on the Kogelnik coupled-wave theory, the initial source file is configured to obtain the target source file; Compile the header file and the target source file to obtain the target file; Import the target file into ZEMAX.

3. The simulation method for the AR optical system according to claim 2, characterized in that, The steps for configuring the initial source file based on the Kogelnik coupled-wave theory to obtain the target source file include: Locate the first parameter in the initial source file; Based on Kogelnik coupled-wave theory, the first parameter is configured to obtain the target source file.

4. The simulation method for the AR optical system according to claim 1, characterized in that, The step of calling the target file and generating the holographic waveguide component in ZEMAX sequence mode includes: In Zamax's sequence mode, the target file is invoked to generate a custom volumetric holographic surface; Based on the custom volume holographic surface and holographic diffraction theory, a volume holographic grating is generated; The volume holographic grating is superimposed to expand it into a multi-composite grating; By combining the multiple composite gratings with a preset parallel waveguide component, a holographic waveguide assembly is obtained.

5. The simulation method for the AR optical system according to claim 4, characterized in that, The step of expanding the composite holographic grating to obtain a multi-composite grating includes: The volume holographic grating is subjected to angular bandwidth expansion to obtain an expanded grating; The wavelength of the extended grating is extended to obtain a multi-composite grating.

6. The simulation method for the AR optical system according to claim 1, characterized in that, The step of obtaining the collimation component based on the preset parameters of the display and the holographic waveguide component includes: Based on the preset parameters of the display and the holographic waveguide components, the parameters of the collimation components are obtained; The collimation component is obtained based on the parameters of the collimation component.

7. The simulation method for the AR optical system according to claim 1, characterized in that, The steps for obtaining the target AR optical system by connecting the preset display, the collimation component, and the holographic waveguide component include: Determine the parameters of the AR optical system based on the preset parameters of the display. By connecting the display, collimation component, and holographic waveguide component, an initial AR optical system is obtained; Based on the parameters of the AR optical system, the initial AR optical system is optimized in ZEMAX to obtain the target AR optical system.

8. A simulation device for an AR optical system, characterized in that, include: The first acquisition module is used to acquire the header file and the initial source file; The conversion module is used to obtain the target file based on Kogelnik coupled-wave theory, the header file and the initial source file, and then import the target file into ZEMAX. The first simulation module is used to call the target file in ZEMAX's sequence mode to generate a holographic waveguide component; The second simulation module is used to obtain the collimation component based on the preset parameters of the display and the holographic waveguide component; Adjust the module; The target AR optical system is obtained by connecting the preset display, the collimation component and the holographic waveguide component.

9. A computer-readable storage medium storing a computer program, characterized in that, When the computer program is executed by the processor, it implements the steps of the simulation method for the AR optical system as described in any one of claims 1 to 7.

10. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the computer program, it implements the steps of the simulation method for the AR optical system as described in any one of claims 1 to 7.

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