Simulation method and device of AR optical system, medium and electronic equipment
By utilizing Kogelnik coupled-wave theory and ZEMAX non-sequential modes to construct an AR optical system, the problem of low simulation efficiency of volume holographic gratings in existing technologies is solved, achieving efficient and systematic AR optical system simulation and improving the optical performance of AR devices.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- JIANGXI RUIHONGDA TECHNOLOGY CO LTD
- Filing Date
- 2026-01-14
- Publication Date
- 2026-04-10
AI Technical Summary
In the existing technology, the simulation methods for AR optical systems cannot effectively simulate the diffraction efficiency of volume holographic gratings and the overall characteristics of the optical system, resulting in low simulation efficiency and poor quality, which affects the optical performance of augmented reality head-mounted displays.
The target file is generated using Kogelnik coupled-wave theory, and in ZEMAX's non-sequential mode, the light source, target standard component, and holographic waveguide component are constructed sequentially. The simulation of the holographic waveguide component is achieved by connecting the detector, thereby improving simulation efficiency and systematicity.
It improves the simulation efficiency and quality of AR optical systems and enhances the optical performance of AR devices.
Smart Images
Figure CN121832097A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of projection display technology, and in particular to a simulation method, apparatus, medium and electronic device for an AR optical system. Background Technology
[0002] With the rapid development of optical technology, the demand for augmented reality (AR) head-mounted displays is increasing, among which AR devices equipped with holographic waveguide components are particularly favored by users. The most crucial component in a holographic waveguide is the input / output coupling element formed by a volume holographic grating. Simulating the characteristics of the volume holographic grating is particularly important during the design process. In existing technologies, simulation is typically performed using programming languages or optical software. This method is relatively cumbersome and cannot accurately simulate the diffraction efficiency of the volume holographic grating and the overall characteristics of the optical system, thus affecting the optical performance of the AR head-mounted display.
[0003] Therefore, it is necessary to provide a simulation method, apparatus, medium, and electronic device for AR optical systems to solve the above-mentioned problems. Summary of the Invention
[0004] In view of the shortcomings of the existing technology, the present invention provides a simulation method, device, medium and electronic device for AR optical systems, which can effectively solve the problem that the simulation process of AR optical systems cannot effectively simulate the diffraction efficiency of ground holographic gratings and the overall characteristics of the optical system.
[0005] To achieve the above objectives, a first aspect of the present invention provides a simulation method for an AR optical system, comprising: Obtain the initial source file, and based on Kogelnik's coupled-wave theory and the pre-defined structural requirements of the volume holographic grating, convert the initial source file into a target file and import the target file into ZEMAX; Obtain the corresponding light source based on the preset parameters of the display; Obtain the initial collimation component, convert the initial collimation component into the target collimation component, and import it into ZEMAX; In ZEMAX's non-sequence mode, the target file is called to generate a volume holographic grating and obtain a holographic waveguide component; By connecting the light source, the target straight-line component, the holographic waveguide component, and the preset detector, a target AR optical system is obtained.
[0006] In a preferred embodiment, the steps of obtaining an initial source file, converting the initial source file into a target file based on Kogelnik coupled-wave theory and the pre-defined structural requirements of the volume holographic grating, and importing the target file into ZEMAX include: Obtain the initial source file and locate the target parameters in the initial source file based on the structural requirements of the volume holographic grating; Based on Kogelnik coupled wave theory, target parameters are configured to obtain the target file; Import the target file into ZEMAX's dynamic link library.
[0007] In a preferred embodiment, the steps of obtaining the initial source file and locating the target parameters in the initial source file based on the structural requirements of the volume holographic grating include: Obtain the initial source file; Determine whether the volumetric holographic grating has a rectangular structure; If so, locate the first parameter group in the initial source file and use the first parameter group as the target parameter; If not, locate the second parameter group in the initial source file and use the second parameter group as the target parameter.
[0008] In a preferred embodiment, the steps of obtaining an initial collimation component, converting the initial collimation component into a target collimation component, and importing it into ZEMAX include: In ZEMAX's sequence mode, the initial collimation component is obtained based on the display parameters; Transform the initial collimation system into the target collimation component corresponding to the ZEMAX non-sequence mode; Import the target standard component into ZEMAX.
[0009] In a preferred embodiment, in ZEMAX's non-sequential mode, the step of calling the target file to obtain the holographic waveguide component includes: In ZEMAX's non-sequence mode, the target file is called to generate a volume holographic raster; By combining holographic gratings, multiple composite gratings are obtained; By combining multiple composite gratings with a pre-set parallel waveguide component, a holographic waveguide assembly is obtained.
[0010] In a preferred embodiment, the step of obtaining a multi-composite grating by stacking holographic gratings includes: An extended grating is obtained by expanding the angular bandwidth of a volume holographic grating. Wavelength extension of the extended grating yields a multi-composite grating.
[0011] In a preferred embodiment, the steps of connecting the light source, the target straight-line component, the holographic waveguide component, and the preset detector to obtain the target AR optical system include: By connecting the light source, the target straight-line component, the holographic waveguide component, and the preset detector, an initial AR optical system is obtained; Based on the preset optical system parameters, the initial AR optical system is optimized to obtain the target AR optical system.
[0012] A second aspect of the present invention provides a simulation device for an AR optical system, comprising: The conversion module is used to obtain the initial source file, convert it into a target file based on Kogelnik coupled-wave theory and the pre-defined structural requirements of the volume holographic grating, and then import the target file into ZEMAX. The acquisition module is used to acquire the corresponding light source based on the preset parameters of the display. The first simulation module is used to obtain the initial collimation component, convert the initial collimation component into the target collimation component, and import it into ZEMAX; The second simulation module is used to call the target file in ZEMAX's non-sequential mode, generate a volume holographic grating, and obtain a holographic waveguide component; Adjustment module; used to connect the light source, target straight-line component, holographic waveguide component and preset detector to obtain the target AR optical system.
[0013] 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 simulation method for the AR optical system of any of the above embodiments.
[0014] A fourth aspect of the present invention provides an electronic device including a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that the processor executes the computer program to implement the steps of a simulation method for an AR optical system according to any of the above embodiments.
[0015] The beneficial effects of this invention are as follows: This application generates a target file for constructing a holographic waveguide component by utilizing Kogelnik coupled-wave theory. In ZEMAX's non-sequential mode, the light source and target standard component are constructed sequentially according to the optical path order. Then, the target file is called to construct the holographic waveguide component. This enables the simulation of the holographic waveguide component and the overall simulation of the AR optical system, improving the efficiency of the simulation, enhancing the systematicness, completeness, and quality of the simulation, and thereby improving the optical performance of the optical system in the AR device. Attached Figure Description
[0016] Figure 1 This is a flowchart illustrating the simulation method for an AR optical system provided in an embodiment of the present invention.
[0017] Figure 2 A schematic diagram of a simulation device for an AR optical system provided in an embodiment of the present invention.
[0018] Figure 3 This is a schematic diagram of the electronic device provided in an embodiment of the present invention. Detailed Implementation
[0019] In this invention, the terms "set up," "equipped with," and "connected" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, elements, or components. Those skilled in the art can understand the specific meaning of these terms in this invention according to the specific circumstances.
[0020] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0021] Furthermore, in addition to indicating direction or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in certain situations to indicate a dependency or connection. Those skilled in the art can understand the specific meaning of these terms in this invention based on the specific circumstances.
[0022] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.
[0023] Compared to other traditional VR or AR optical systems, the design and simulation methods for holographic waveguide AR optical systems are more complex. While the structure of a holographic waveguide optical system is relatively simple, the simulation calculations are more intricate. The volume holographic grating is one of the most crucial components in a holographic waveguide optical system, requiring focused simulation, while also considering the overall performance of the optical system. Existing simulation methods are relatively cumbersome and cannot adequately simulate the diffraction efficiency of the volume holographic grating and the overall design of the optical system, resulting in relatively low simulation efficiency and quality.
[0024] The following is the content of the first aspect of the present invention: Please refer to Figure 1 This embodiment provides a simulation method for an AR optical system, the steps of which include: S1. Obtain the initial source file. Based on Kogelnik's coupled-wave theory and the pre-defined structural requirements of the volume holographic grating, convert the initial source file into a target file and import the target file into ZEMAX.
[0025] ZEMAX is a software for optical product design and simulation. The initial source file is used to customize the holographic waveguide assembly in ZEMAX. The volume holographic grating is the core component of the holographic waveguide assembly, and its structure can be either rectangular or non-rectangular.
[0026] In the simulation of AR optical systems using holographic waveguides, the simulation design of volume holographic gratings is particularly important. The structure and parameters of the volume holographic grating affect the parametric performance of the holographic waveguide components. In ZEMAX's non-sequential mode, the shape and diffraction characteristics of diffraction elements are defined separately. The shape of the diffraction element is defined in ZEMAX's non-sequential lens editor, while the diffraction characteristics are defined through a dynamic link library. Therefore, it is necessary to compile an object file that can be imported into the dynamic link library.
[0027] After obtaining the initial source file, based on the pre-defined structural requirements of the volume holographic grating, the parameters used to define the key information of the volume holographic grating in the initial source file are located. Then, combined with Kogelnik's coupled-wave theory, the aforementioned parameters are configured and adjusted. After completing the relevant parameter configuration, the configured file is compiled and converted to obtain the target file, which is then imported into ZEMAX's dynamic link library.
[0028] S2. Obtain the corresponding light source according to the preset display parameters; S3. Obtain the initial collimation component, convert the initial collimation component into the target collimation component, and import it into ZEMAX; S4. In ZEMAX's non-sequential mode, call the target file, generate a volume holographic grating, and obtain a holographic waveguide component; S5. Connect the light source, target straight component, holographic waveguide component and preset detector to obtain the target AR optical system.
[0029] Among them, the display, collimation component, and holographic waveguide component are all core components of the AR optical system; the initial collimation component is the collimation component determined in the ZEMAX sequence mode, and the target collimation component is the collimation component transformed from the initial collimation component; the holographic waveguide component is used to transmit light to the user's eyes; the detector is used to replace the human eye model to realize ray tracing and analysis.
[0030] After importing the target file into the ZEMAX dynamic link library, in ZEMAX's non-sequential mode, a forward simulation method is used to construct the light source, target straight component, and holographic waveguide component in sequence according to the optical path transmission order.
[0031] Specifically, based on the parameter requirements of the optical system, preset display parameters are obtained. Then, based on the display parameters, the type of light source is selected, and the luminous area, power, light pattern, and spectrum of the light source are determined. It's easy to understand that using a light source makes modeling easier and improves simulation efficiency. Preferably, a rectangular light source and a slide can be used, with the light source energy set to 1 watt and wavelengths set to 630nm, 550nm, and 470nm. The corresponding light source can be determined according to the actual design requirements and is not limited here.
[0032] After determining the starting light source, the initial collimation component pre-built in ZEMAX sequence mode is obtained, and then the initial collimation component is converted into the corresponding target collimation component in non-sequence mode. The target collimation component is then imported into ZEMAX non-sequence mode, and the position coordinates of the target collimation component are recorded.
[0033] After determining the light source and target standard component, the target file is called from the ZEMAX dynamic link library. Based on the target file, a corresponding volume holographic grating is generated. The resulting volume holographic grating is then expanded to obtain the input coupling grating and output coupling grating that constitute the holographic waveguide component. Combining the output coupling grating, input coupling grating, and a preset planar waveguide component yields the holographic waveguide component. After obtaining the holographic waveguide component, a preset detector is called, and the light source, target standard component, holographic waveguide component, and detector are connected. A comprehensive analysis and optimization are then performed to obtain the target AR optical system.
[0034] Understandably, by using Kogelnik coupled-wave theory to generate target files for constructing holographic waveguide components, and in ZEMAX's non-sequential mode, constructing the light source and target standard components sequentially according to the optical path order, and then calling the target file to construct the holographic waveguide components, it is possible to realize the simulation of holographic waveguide components and the overall simulation of AR optical systems. This improves the efficiency of simulation, enhances the systematicness, completeness, and quality of simulation, and thus improves the optical performance of the optical system in AR devices.
[0035] Furthermore, in one embodiment, the step S1 of obtaining the initial source file, converting the initial source file into a target file based on Kogelnik coupled-wave theory and the pre-defined structural requirements of the volume holographic grating, and importing the target file into ZEMAX includes: S11. Obtain the initial source file and locate the target parameters in the initial source file based on the structural requirements of the volume holographic grating; S12. Based on Kogelnik coupled wave theory, configure the target parameters to obtain the target file; S13. Import the target file into ZEMAX's dynamic link library.
[0036] Among them, the target parameters are the key parameters used to construct the volume holographic grating in the initial source file. The target parameters include the first parameter group and the second parameter group. The corresponding target parameters can be located according to the structural requirements of the volume holographic grating.
[0037] In non-sequential mode, the volume holographic grating needs to output not only the diffraction efficiency and direction of the first-order diffracted light, but also the diffraction efficiency and direction of the zero-order diffracted light. Specifically, after obtaining the initial source file, based on the preset structural requirements of the volume holographic grating, the target parameters are determined from the initial source file. That is, depending on the structural type of the volume holographic grating, it is determined whether to use the first parameter group or the second parameter group. After determining the corresponding target parameters, the target parameters are configured using Kogelnik coupled-wave theory, and the configured initial source file is compiled and converted to obtain the target file. The obtained target file is then imported into the ZEMAX dynamic link library.
[0038] Furthermore, in a preferred embodiment, step S11 of obtaining the initial source file and locating the target parameters in the initial source file based on the structural requirements of the volume holographic grating includes: S111, Obtain the initial source file; S112. Determine whether the volume holographic grating is a rectangular structure; S113. If so, locate the first parameter group in the initial source file and use the first parameter group as the target parameter; S114. If not, locate the second parameter group in the initial source file and use the second parameter group as the target parameter.
[0039] The first parameter group consists of the target parameters corresponding to the rectangular volume holographic grating, and the second parameter group consists of the target parameters corresponding to the non-rectangular volume holographic grating.
[0040] In actual simulation design, the required volume holographic grating structure may be rectangular or non-rectangular. After obtaining the initial source file, it is necessary to determine the required structure type of the volume holographic grating in order to determine the corresponding target parameters that need to be located.
[0041] After determining that the volume holographic grating is a rectangular structure, the first parameter set is located and used as the target parameters. Specifically, the first parameter set includes the UserDiffraction function and the UserParamNames function. The UserDiffraction function is used to calculate the diffraction efficiency, diffraction direction, and polarization information of each order; the UserParamNames function is used for information such as the direction and wavelength of the input reference light and signal light, the average refractive index of the medium of the volume holographic grating, the refractive index modulation, and the thickness.
[0042] In ZEMAX's non-sequence mode, users can define custom objects, which are also implemented by importing target files into a dynamic link library. After determining that the volume holographic grating is a non-rectangular structure, the second parameter group in the initial source file is located and used as the target parameters. Specifically, the second parameter group includes the UserObjectDefinition and UserParamNames functions. The UserObjectDefinition function is used to create triangles to define the object's surface, iteratively find intersection points, and calculate the normal vectors of each surface. The UserParamNames function is used to name the parameters input by the lens editor in ZEMAX and store them in the corresponding data group.
[0043] Furthermore, in one embodiment, step S3, which involves obtaining an initial collimation component, converting the initial collimation component into a target collimation component, and importing it into ZEMAX, includes: S31. In ZEMAX's sequence mode, obtain the initial collimation component based on the display parameters; S32. Transform the initial collimation system into the target collimation component corresponding to the ZEMAX non-sequence mode; S33. Import the target standard component into ZEMAX.
[0044] Specifically, after determining the corresponding light source based on the preset display parameters, in ZEMAX's sequential mode, the first collimation component is obtained using the display parameters. This first collimation component is then optimized to obtain a second collimation component, which is used as the initial collimation component. The initial collimation component is then transformed to obtain the target collimation component in ZEMAX's non-sequential mode. The target collimation component is then imported into ZEMAX, and its corresponding position coordinates are determined to ensure seamless integration between the subsequent light source, target collimation component, and holographic waveguide component.
[0045] Furthermore, in one embodiment, in ZEMAX's non-sequential mode, step S4 of calling the target file to obtain the holographic waveguide component includes: S41. In ZEMAX's non-sequence mode, call the target file and generate a volume holographic raster; S42, a multi-layer composite holographic grating is obtained; S43. Combine multiple composite gratings with a preset parallel waveguide component to obtain a holographic waveguide assembly.
[0046] Among them, the multiple composite grating is the input and output component of the holographic waveguide assembly. The multiple composite grating includes an input coupling grating and an output coupling grating. The parallel waveguide is the intermediate transmission component of the holographic waveguide assembly. In order to ensure that the propagation angle of the image-carrying light wave in the waveguide meets the internal total reflection, the angle of the diffracted light after the light passes through the input coupling grating must be greater than the total reflection angle of the parallel waveguide.
[0047] Once the light source and target standard components are obtained, in ZEMAX's non-sequential mode, the parameters of the volume holographic grating are defined. When customizing the diffraction properties of the object, the target file in the dynamic link library is called to generate the required volume holographic grating. In a preferred embodiment, the average refractive index of the volume holographic grating material is set to 1.52, and the waveguide layer material is PMMA with an average refractive index of 1.49.
[0048] A single volume holographic grating is insufficient to meet the performance requirements of an optical system; it needs to be expanded to satisfy these requirements. After obtaining a single volume holographic grating, detectors can be placed on the 0th and 1st order diffracted beams. This allows for the measurement of the energy of the 0th and 1st order diffracted beams reflected by the grating under Bragg conditions. By utilizing ZEMAX's multi-structure NPRO operand, the incident light angle, wavelength, and grating thickness can be scanned, yielding curves showing the relationship between the incident angle, wavelength, and grating thickness and diffraction efficiency. It is easy to understand that obtaining the diffraction efficiency curve of the volume holographic grating prepares the groundwork for subsequent expansion.
[0049] After obtaining the volume holographic grating, its position coordinates can be set to achieve superposition of the gratings, resulting in multiple composite gratings. This ensures that light of different colors propagates within their respective waveguides. The resulting multiple composite gratings are then combined with a pre-designed planar waveguide component to obtain a holographic waveguide assembly.
[0050] After obtaining the holographic waveguide component, it is necessary to optimize it to achieve a uniform and continuous exit pupil expansion effect. Specifically, a large exit pupil range can be achieved by continuously replicating and expanding the beam at the exit pupil position. When the beam propagating in the waveguide encounters the output coupling grating, it is split into two beams. One beam enters the human eye with a diffraction efficiency equivalent to that of a first-order diffracted beam; the other beam continues to propagate forward with a diffraction efficiency equivalent to that of a zero-order diffracted beam. The beam that continues to propagate forward will undergo total internal reflection on the inner wall of the grating and encounter the output coupling grating again, where it will be split into two beams once more. This process will continue to cycle until the beam on the grating is completely covered, thereby achieving a large exit pupil range for the holographic waveguide component.
[0051] In a preferred embodiment, step S42 of obtaining a multi-composite grating by stacking holographic gratings includes: S421. Extend the angular bandwidth of the volume holographic grating to obtain the extended grating; S422. Wavelength extension is performed on the extended grating to obtain a multi-composite grating.
[0052] After obtaining the volume holographic grating and its corresponding diffraction efficiency curve, in ZEMAX's non-sequential mode, the stacking of the volume holographic grating can be achieved by adjusting the position coordinates of the waveguide layer and the wavelength selectivity of the volume holographic grating, thereby realizing the angular bandwidth extension and wavelength extension of the volume holographic grating.
[0053] By adjusting the position coordinates of volume holographic gratings, the superposition of volume holographic gratings can be achieved. Under the constraints of the grating formula and the waveguide refractive index, the more layers of superimposed volume holographic gratings there are, the greater the angular bandwidth will be, thereby realizing the angular bandwidth extension of the volume holographic grating and obtaining an extended grating.
[0054] After obtaining the extended grating, by setting the wavelength selectivity of the volume holographic grating, the propagation of light of different colors in each waveguide can be realized, thereby expanding the wavelength of the extended grating to obtain multiple composite gratings.
[0055] Furthermore, in one embodiment, step S5, which connects the light source, the target straight-line component, the holographic waveguide component, and the preset detector to obtain the target AR optical system, includes: S51. Connect the light source, collimation component, holographic waveguide component and preset detector to obtain the initial AR optical system; S52. Optimize the initial AR optical system according to the preset optical system parameters to obtain the target AR optical system.
[0056] The detectors include a power detector and a color detector. After obtaining the light source, the target straight-line component, and the holographic waveguide component, in ZEMAX's non-sequential mode, based on the position coordinates determined by the light source, the target straight-line component, and the holographic waveguide component, the light source, the target straight-line component, and the holographic waveguide component are sequentially connected. Then, the preset detectors are invoked, and the power detector and the color detector are respectively set at the human eye observation position of the output coupling grating of the holographic waveguide component, thereby obtaining the initial AR optical system.
[0057] After obtaining the initial AR optical system, it is optimized based on preset optical system parameters and data fed back from the detector. Specifically, the illuminance distribution of the input image source is acquired, and the luminous efficacy of the initial AR optical system is calculated based on the energy received at the image surface and the energy of the output light source. Then, combined with the preset optical system parameters, the regional coupling efficiency of the coupling grating is modulated to improve the consistency of the beam energy coupled out at each point in the waveguide, thereby completing the optimization of the initial AR optical system and obtaining the target AR optical system.
[0058] In summary, this application utilizes Kogelnik coupled-wave theory to generate target files for constructing holographic waveguide components. In ZEMAX's non-sequential mode, the light source and target standard components are constructed sequentially according to the optical path order. Then, the target file is called to construct the holographic waveguide component. This enables the simulation of holographic waveguide components and the overall simulation of AR optical systems, improving simulation efficiency, systematicity, completeness, and quality, thereby enhancing the optical performance of the optical system in AR devices.
[0059] A second aspect of the present invention provides a simulation device for an AR optical system, please refer to... Figure 2 The simulation device for this AR optical system includes: The conversion module 10 is used to obtain the initial source file, convert the initial source file into a target file based on Kogelnik coupled-wave theory and the pre-set structural requirements of the volume holographic grating, and import the target file into ZEMAX; The first simulation module 20 is used to obtain the corresponding light source according to the preset parameters of the display. The second simulation module 30 acquires the initial collimation component, converts the initial collimation component into the target collimation component, and imports it into ZEMAX; The third simulation module 40 is used to call the target file in ZEMAX's non-sequential mode, generate a volume holographic grating, and obtain a holographic waveguide component; Adjustment module 50 is used to connect the light source, the target straight-line component, the holographic waveguide component and the preset detector to obtain the target AR optical system.
[0060] It is understandable that the simulation device for this AR optical system can realize the simulation of holographic waveguide components and the overall simulation of the AR optical system, thereby improving the efficiency of the simulation, the systematicness, completeness and quality of the simulation, and thus improving the optical performance of the optical system in the AR device.
[0061] 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.
[0062] 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 and executable on the processor. When the processor 70 executes the computer program 80, it implements the steps of the aforementioned simulation method for the AR optical system.
[0063] 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 initial source file, and based on Kogelnik coupled-wave theory and the pre-defined structural requirements of the volume holographic grating, convert the initial source file into a target file, and import the target file into ZEMAX; Obtain the corresponding light source based on the preset parameters of the display; Obtain the initial collimation component, convert the initial collimation component into the target collimation component, and import it into ZEMAX; In ZEMAX's non-sequential mode, the target file is invoked to generate a volume holographic grating and obtain a holographic waveguide component; By connecting the light source, the target straight-line component, the holographic waveguide component, and the preset detector, 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 initial source file, converting the initial source file into a target file based on Kogelnik coupled-wave theory and the pre-defined structural requirements of the volume holographic grating, and importing the target file into ZEMAX include: Obtain the initial source file and, based on the structural requirements of the volume holographic grating, locate the target parameters in the initial source file; Based on the Kogelnik coupled-wave theory, the target parameters are configured to obtain the target file; Import the target file into ZEMAX's dynamic link library.
3. The simulation method for the AR optical system according to claim 2, characterized in that, The steps of obtaining the initial source file and locating the target parameters in the initial source file based on the structural requirements of the volume holographic grating include: Obtain the initial source file; Determine whether the volume holographic grating is a rectangular structure; If so, locate the first parameter group in the initial source file and use the first parameter group as the target parameter; If not, locate the second parameter group in the initial source file and use the second parameter group as the target parameter.
4. The simulation method for the AR optical system according to claim 1, characterized in that, The steps of obtaining the initial collimation component, converting the initial collimation component into the target collimation component, and importing it into ZEMAX include: In ZEMAX's sequence mode, the initial collimation component is obtained based on the display parameters; The initial collimation system is transformed into the target collimation component corresponding to the ZEMAX non-sequence mode; Import the target standard component into ZEMAX.
5. The simulation method for the AR optical system according to claim 1, characterized in that, The steps for obtaining the holographic waveguide component by calling the target file in ZEMAX's non-sequential mode include: In ZEMAX's non-sequence mode, the target file is invoked to generate a volume holographic grating; The volume holographic grating is superimposed to obtain a multi-composite grating; By combining the multiple composite gratings with a preset parallel waveguide component, a holographic waveguide assembly is obtained.
6. The simulation method for the AR optical system according to claim 5, characterized in that, The step of superimposing the volume holographic grating to obtain a multi-composite grating includes: An extended grating is obtained by expanding the angular bandwidth of a volume holographic grating. Wavelength extension of the extended grating yields a multi-composite grating.
7. The simulation method for the AR optical system according to claim 1, characterized in that, The steps of connecting the light source, the target straight-line component, the holographic waveguide component, and the preset detector to obtain the target AR optical system include: By connecting the light source, the target straight-line component, the holographic waveguide component, and the preset detector, an initial AR optical system is obtained; Based on preset optical system parameters, the initial AR optical system is optimized to obtain the target AR optical system.
8. A simulation device for an AR optical system, characterized in that, include: Conversion module; To obtain the initial source file, based on Kogelnik coupled-wave theory and the pre-defined structural requirements of the volume holographic grating, the initial source file is converted into a target file, and the target file is imported into ZEMAX; The acquisition module is used to acquire the corresponding light source based on the preset parameters of the display. The first simulation module is used to obtain the initial collimation component, convert the initial collimation component into the target collimation component, and import it into ZEMAX; The second simulation module is used to call the target file in ZEMAX's non-sequential mode, generate a volume holographic grating, and obtain a holographic waveguide component; Adjustment module; used to connect the light source, target straight component, holographic waveguide component and preset detector to obtain target AR optical system.
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 according to any one of claims 1 to 7.