System for manufacturing optical waveguide lenses

The system addresses alignment and exposure issues in optical waveguide lenses by using multi-beam splitting and interference to form multiple gratings efficiently, improving manufacturing time and flexibility.

JP2026521294APending Publication Date: 2026-06-30NANCHANG VIRTUAL REALITY RES INST CO LTD

Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
NANCHANG VIRTUAL REALITY RES INST CO LTD
Filing Date
2024-10-11
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

Conventional optical waveguide lenses face issues with alignment differences, vibration, and non-uniformity in exposure processes, affecting transmission efficiency and imaging quality, and lack flexibility in adjusting light direction and grating positions during production and assembly.

Method used

A system for manufacturing optical waveguide lenses utilizing multiple beam splitters, reflective mirrors, and beam expanders to perform multi-beam splitting and interference from different directions, forming internally, folded, and externally coupled gratings in a single process.

Benefits of technology

This approach enhances manufacturing efficiency by reducing time and increasing production capacity, allowing for identical grating performance and flexible light direction adjustment, especially in mass production.

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Abstract

The embodiments of this application provide a system for manufacturing optical waveguide lenses, which primarily performs multi-beam splitting on an exposure beam and interferes two light beams from different directions to simultaneously meet the exposure requirements of multiple gratings. By forming internally coupled gratings, folded gratings, and externally coupled gratings at once, manufacturing time is saved, and production efficiency can be increased, especially in the mass production stage.
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Description

Technical Field

[0004] , , ,

[0001] [Cross - reference to Related Applications] This application claims the priority of a Chinese patent application filed with the Patent Office of the State Intellectual Property Office of China on May 8, 2024, with the application number 202410557923.0 and the invention title "System for Manufacturing an Optical Waveguide Lens", and all of its content is incorporated herein by reference.

[0002] Each embodiment of this application belongs to the technical field of optical waveguide lens manufacturing, and particularly relates to a system for manufacturing an optical waveguide lens.

Background Art

[0003] Conventional volume holographic optical waveguide lenses are mainly divided into one - dimensional optical waveguide lenses and two - dimensional optical waveguide lenses. One - dimensional optical waveguide lenses are composed of two gratings, and two - dimensional optical waveguide lenses are composed of two or three gratings. Generally, when performing interference exposure, each grating is exposed individually, and finally, one complete optical waveguide lens is formed. The gratings exposed at different times are affected by the alignment difference between two light beams, the vibration of the optical table, the non - uniformity of the application of the refractive index matching liquid twice, and the difference in exposure time, which affects the transmission efficiency of the optical waveguide and the imaging effect of the image. Next, when facing the production and assembly stages, the output light direction of the optical waveguide cannot be adjusted arbitrarily, and the arrangement positions and sizes of the three gratings cannot be adjusted arbitrarily.

Summary of the Invention

Means for Solving the Problems

[0004] To solve or mitigate the problems in the prior art, Embodiments of this application provide a system for manufacturing an optical waveguide lens. This system for manufacturing an optical waveguide lens includes a first monochromatic light generator, a first light input amount controller, a first half - wavelength plate, a first beam splitter, a first optical path, and a second optical path. The first optical path includes a second half-wave plate, a first beam expander, and a first collimator. The second optical path includes a first reflective mirror, a second beam expander, and a second collimator. The monochromatic light emitted from the first monochromatic light generator is processed sequentially by the first light input controller and the first half-wave plate, and then split into a first light beam and a second light beam by the first beam splitter. The first optical beam is processed sequentially by a second half-wave plate, a first beam expander, and a first collimator in the first optical path, and then split into a third optical beam and a fourth optical beam by a second beam splitter. The third optical beam then passes through a second reflective mirror to obtain a fifth optical beam, and the fourth optical beam then passes through a third reflective mirror to obtain a sixth optical beam. The second optical beam is processed sequentially by the first reflective mirror, the second beam expander, and the second collimator in the second optical path, and then split into a seventh optical beam and an eighth optical beam by the third beam splitter. The seventh optical beam then passes through the fourth reflective mirror and the fifth reflective mirror to obtain the ninth optical beam, and the eighth optical beam then passes through the sixth reflective mirror to obtain the tenth optical beam. The sixth and ninth light beams are exposed onto the holographic material to form an internal coupling grating, the fifth and ninth light beams are exposed onto the holographic material to form a folded grating, the sixth and tenth light beams are exposed onto the holographic material to form an external coupling grating, and furthermore, a two-dimensional optical waveguide lens is formed. A beam limiter is installed on the side of the holographic material closest to the first monochromatic light generator.

[0005] In one preferred embodiment of this application, the system further includes a second monochromatic light generator, a second light input controller, a third half-wave plate, and a fourth beam splitter. The monochromatic light emitted from the second monochromatic light generator is processed sequentially by the second light input controller, the third half-wave plate, and the fourth beam splitter to obtain the eleventh and twelfth light beams. The eleventh light beam is processed in order by a fourth half-wave plate, a seventh reflective mirror, and a third beam expander, and then incident on a first dichroic mirror, which is positioned between the first beam expander and the first collimator. The twelve light beams are processed in order by the eighth reflective mirror, the ninth reflective mirror, and the fourth beam expander before being incident on the second dichroic mirror, which is positioned between the second beam expander and the second collimator.

[0006] In one preferred embodiment of this application, the system further includes a third monochromatic light generator, a third light input controller, a fifth half-wave plate, and a fifth beam splitter. A tenth reflective mirror is installed between the second half-wave plate and the first beam expander, and a third dichroic mirror is installed between the first beam expander and the first dichroic mirror. An eleventh reflective mirror is installed between the first reflective mirror and the second beam expander, and a fourth dichroic mirror is installed between the second beam expander and the second dichroic mirror. The monochromatic light emitted from the third monochromatic light generator is processed sequentially by the third light input controller, the fifth half-wave plate, and the fifth beam splitter to obtain the thirteenth and fourteenth light beams. The thirteenth light beam is then processed by the sixth half-wave plate and the fifth beam expander, and then incident on the third dichroic mirror. The fourteenth light beam is processed by the twelfth reflective mirror and the sixth beam expander in order, and then incident on the fourth dichroic mirror.

[0007] In one preferred embodiment of this application, the system further includes a filter, The optical beams processed by the first, second, third, fourth, fifth, and sixth beam expanders are then processed by filters.

[0008] In one preferred embodiment of this application, the system further includes a first prism, The holographic material is installed on the side of the first prism away from the first monochromatic light generator, and the beam limiter is installed between the first prism and the holographic material. The sixth and ninth light beams are exposed to the holographic material after their incident light angles are adjusted by the first prism to form an internal coupling grating; the fifth and ninth light beams are exposed to the holographic material after their incident light angles are adjusted by the first prism to form a folded grating; and the sixth and tenth light beams are exposed to the holographic material after their incident light angles are adjusted by the first prism to form an external coupling grating.

[0009] In one preferred embodiment of this application, the system further includes a second prism, The holographic material is placed between the first prism and the second prism, and the beam limiter is placed between the first prism and the holographic material. The sixth and ninth light beams are exposed to the holographic material to form an internal coupling grating after their incident light angles are adjusted by the first and / or second prisms; the fifth and ninth light beams are exposed to the holographic material to form a folded grating after their incident light angles are adjusted by the first and / or second prisms; and the sixth and tenth light beams are exposed to the holographic material to form an external coupling grating after their incident light angles are adjusted by the first and / or second prisms.

[0010] In one preferred embodiment of this application, a light-shielding plate is installed on the side of the holographic material closest to the first monochromatic light generator, and the light-shielding plate shields the sixth and ninth light beams to form a one-dimensional optical waveguide lens. [Effects of the Invention]

[0011] Compared to conventional technologies, the embodiments of this application provide a system for manufacturing optical waveguide lenses, primarily by performing multi-beam splitting on the exposure beam and interfering two light beams from different directions, thereby simultaneously meeting the exposure requirements of multiple gratings. This allows for the formation of internally coupled gratings, folded gratings, and externally coupled gratings in a single process, saving manufacturing time and increasing production efficiency, especially in the mass production stage. [Brief explanation of the drawing]

[0012] The drawings described herein are provided to provide a further understanding of this application and constitute part of this application. The schematic embodiments and descriptions herein are for interpretive purposes only and do not constitute an unreasonable limitation of this application. Hereinafter, several specific embodiments of this application are described in detail in an exemplary but non-restrictive manner with reference to the drawings. The same reference numerals in the drawings indicate the same or similar components or parts. As those skilled in the art should understand, these drawings are not necessarily drawn to scale, and in the drawings, [Figure 1] This is a schematic diagram of the system structure for manufacturing an optical waveguide lens according to Embodiment 1 of this application. [Figure 2] This is a schematic diagram of the system structure for manufacturing an optical waveguide lens according to Embodiment 2 of this application. [Figure 3] This is a schematic diagram of the system structure for manufacturing an optical waveguide lens according to Embodiment 3 of this application. [Figure 4] This is a schematic diagram of the system structure for manufacturing an optical waveguide lens according to Embodiment 4 of this application. [Figure 5]Schematic diagram of a system structure for manufacturing another optical waveguide lens according to Example 4 of the present application. [Figure 6] Schematic diagram of a system structure for manufacturing another optical waveguide lens according to Example 4 of the present application. [Figure 7] Schematic diagram of a system structure for manufacturing an optical waveguide lens according to Example 5 of the present application. [Figure 8] Schematic diagram of a system structure for manufacturing another optical waveguide lens according to Example 5 of the present application. [Figure 9] Schematic diagram of a system structure for manufacturing another optical waveguide lens according to Example 5 of the present application. [Figure 10] Schematic diagram of a system structure for manufacturing an optical waveguide lens according to Example 6 of the present application. [Figure 11] Schematic diagram of a system structure for manufacturing another optical waveguide lens according to Example 6 of the present application. [Figure 12] Schematic diagram of a system structure for manufacturing another optical waveguide lens according to Example 6 of the present application. [Figure 13] Schematic diagram of a system structure for manufacturing another optical waveguide lens according to Example 6 of the present application. [Figure 14] Schematic diagram of a system structure for manufacturing another optical waveguide lens according to Example 6 of the present application. [Figure 15] Schematic diagram of a system structure for manufacturing another optical waveguide lens according to Example 6 of the present application. [Figure 16] Schematic diagram of a system structure for manufacturing another optical waveguide lens according to Example 6 of the present application. [Figure 17] Schematic diagram of a system structure for manufacturing another optical waveguide lens according to Example 6 of the present application. [Figure 18] Schematic diagram of a system structure for manufacturing another optical waveguide lens according to Example 6 of the present application.

MODE FOR CARRYING OUT THE INVENTION

[0013] To enable those skilled in the art to better understand the solutions of this application, the following clearly and completely describes the technical solutions in the embodiments of this application, linking them with the drawings of the embodiments. Clearly, the embodiments described are only some, and not all, embodiments of this application. All other embodiments derived from the embodiments of this application without the creative effort of those skilled in the art are all within the scope of protection of this application.

[0014] Example 1 As shown in Figure 1, an embodiment of the present application provides a system for manufacturing an optical waveguide lens, comprising a first monochromatic light generator 01, a first light input controller 02, a first half-wave plate 03, a first beam splitter 04, a first optical path, and a second optical path. The first optical path includes a second half-wave plate 05, a first beam expander 06, and a first collimator 08. The second optical path includes a first reflective mirror 12, a second beam expander 13, and a second collimator 16. The monochromatic light (red, green, or blue light) emitted from the first monochromatic light generator 01 is processed sequentially by the first light input controller 02 and the first half-wave plate 03, and then split into a first light beam and a second light beam by the first beam splitter 04. The first optical beam is processed sequentially by the second half-wave plate 05, the first beam expander 06, and the first collimator 08 in the first optical path, and then split into a third optical beam and a fourth optical beam by the second beam splitter 09. The third optical beam passes through the second reflective mirror 10 to obtain a fifth optical beam a, and the fourth optical beam passes through the third reflective mirror 11 to obtain a sixth optical beam b. The first beam expander 06 is used to focus the optical beams, and the first collimator 08 ensures that the light rays propagate parallel to each other.

[0015] The second light beam is processed sequentially by the first reflective mirror 12, the second beam expander 13, and the second collimator 16 in the second optical path, and then split into a seventh and an eighth light beam by the third beam splitter 17. The seventh light beam passes sequentially through the fourth reflective mirror 15 and the fifth reflective mirror 19 to obtain the ninth light beam c, and the eighth light beam passes through the sixth reflective mirror 18 to obtain the tenth light beam d. The second beam expander 13 is used to focus the light beams, and the second collimator 16 ensures that the light rays propagate parallel to each other.

[0016] The sixth light beam b and the ninth light beam c are exposed onto the holographic material 20 to form an internal coupling grating, the fifth light beam a and the ninth light beam c are exposed onto the holographic material 20 to form a folded grating, and the sixth light beam b and the tenth light beam d are exposed onto the holographic material 20 to form an external coupling grating. When the fifth light beam a, the sixth light beam b, the ninth light beam c, and the tenth light beam d are all exposed to the front of the holographic material 20, a transmissive optical waveguide lens as shown in Figure 1 is formed. When the fifth light beam a and the sixth light beam b are exposed to the front of the holographic material, and the ninth light beam c and the tenth light beam d are all exposed to the back of the holographic material 20, a transmissive optical waveguide lens is formed.

[0017] In the embodiments of this application, the first monochromatic light generator 01 is a laser, which can emit red, green, or blue light, and the first light input controller 02 is a shutter, which can control the laser exposure amount by controlling the opening and closing time of the shutter.

[0018] Preferably, the system for manufacturing the optical waveguide lens further includes a first filter 07 and a second filter 14, wherein the optical beam processed by the first beam expander 06 is filtered by the first filter 07, and the optical beam processed by the second beam expander 13 is filtered by the second filter 14.

[0019] A beam limiter 21 is installed on the side of the holographic material 20 closest to the first monochromatic light generator. The beam limiter 21 restricts the light beam in the optical system, allowing only the light beam that forms the two-dimensional optical waveguide lens to pass through. The beam limiter 21 may also consist of an aperture and a mask plate.

[0020] According to the embodiments of this application, three different lattice vectors can be used to manufacture a two-dimensional optical waveguide lens by completing the exposure in a single step, saving three times the time. Furthermore, the performance of the three manufactured lattices can be essentially identical. This eliminates interference from multiple interference exposure refractive index matching solutions, avoids the influence of stray light on unexposed areas of the material when exposing a single lattice, and allows for significant time savings, guaranteed yield, and greatly increased production capacity when mass-produced on a pilot line or production line.

[0021] In the embodiments of this application, since there is only one first monochromatic light generator 01, it is only possible to realize a single color display, and the first monochromatic light generator 01 can generate a laser of any one of the following colors: red, green, or blue.

[0022] Example 2 As shown in Figure 2, based on Example 1, the embodiment further includes a second monochromatic light generator 22, a second light input controller 23, a third half-wave plate 24, and a fourth beam splitter 25. The monochromatic light (red, green, or blue light) emitted from the second monochromatic light generator 22 is processed sequentially by the second light input controller 23, the third half-wave plate 24, and the fourth beam splitter 25 to obtain the eleventh and twelfth light beams. The eleventh light beam is processed in order by the fourth half-wave plate 26, the seventh reflective mirror 27, and the third beam expander 28, and then incident on the first dichroic mirror 30, which is positioned between the first beam expander 06 and the first collimator 08, and the third beam expander 28 is used to focus the light beam.

[0023] The twelve light beams are processed in order by the eighth reflective mirror 31, the ninth reflective mirror 32, and the fourth beam expander 33, and then incident on the second dichroic mirror 35, which is positioned between the second beam expander 13 and the second collimator 16. The first dichroic mirror 30 and the second dichroic mirror 35 are used to transmit light of a certain wavelength and completely reflect light of several other wavelengths, and the fourth beam expander 33 is used to focus the light beams.

[0024] In the embodiments of this application, the second monochromatic light generator 22 is a laser, which can emit red, green, or blue light, and the second light input controller 23 is a shutter, which can control the laser exposure amount by controlling the opening and closing time of the shutter.

[0025] Preferably, the system for manufacturing the optical waveguide lens further includes a third filter 29 and a fourth filter 34, wherein the optical beam processed by the third beam expander 28 is filtered by the third filter 29, and the optical beam processed by the fourth beam expander 33 is filtered by the fourth filter 34.

[0026] In the embodiments of this application, since there is a first monochromatic light generator 01 and a second monochromatic light generator 22, two color displays can be realized, and the first monochromatic light generator 01 and the second monochromatic light generator 22 can generate a laser of any one of the following colors: red, green, and blue.

[0027] Example 3 As shown in Figure 3, based on Embodiment 2, the system further includes a third monochromatic light generator 36, a third light input controller 37, a fifth half-wave plate 38, and a fifth beam splitter 39. A tenth reflective mirror 49 is installed between the second half-wave plate 05 and the first beam expander 06, and a third dichroic mirror 43 is installed between the first beam expander 06 and the first dichroic mirror 30. An eleventh reflective mirror 48 is installed between the first reflective mirror 12 and the second beam expander 13, and a fourth dichroic mirror 47 is installed between the second beam expander 13 and the second dichroic mirror 35. Monochromatic light (red, green, or blue light) emitted from the third monochromatic light generator 36 is processed sequentially by the third light input controller 37, the fifth half-wave plate 38, and the fifth beam splitter 39 to obtain a thirteenth light beam and a fourteenth light beam. The thirteenth light beam is then processed by the sixth half-wave plate 40 and the fifth beam expander 41 in sequence before being incident on the third dichroic mirror 43, and the fifth beam expander 41 is used to focus the light beam.

[0028] The fourteenth light beam is processed in order by the twelfth reflective mirror 44 and the sixth beam expander 45, then incident on the fourth dichroic mirror 47, the sixth beam expander 45 is used to focus the light beam.

[0029] In the embodiments of this application, the third monochromatic light generator 36 is a laser, which can emit red, green, or blue light, and the third light input controller 37 is a shutter, which can control the laser exposure amount by controlling the opening and closing time of the shutter.

[0030] The thirteen light beams are then processed by the sixth half-wave plate 40, and subsequently focused by the fifth beam expander 41, before being incident on the third dichroic mirror 43. The fourteenth light beam is then sequentially folded back by the twelfth reflective mirror 44, focused by the sixth beam expander 45, and then incident on the fourth dichroic mirror 47.

[0031] Preferably, the system for manufacturing the optical waveguide lens further includes a fifth filter 42 and a sixth filter 46, wherein the optical beam processed by the fifth beam expander 41 is filtered by the fifth filter 42, and the optical beam processed by the sixth beam expander 45 is filtered by the sixth filter 46.

[0032] Compared to conventional technologies, the embodiments of this application provide a system for manufacturing optical waveguide lenses, primarily by performing multi-beam splitting on the exposure beam and interfering two light beams from different directions, thereby simultaneously meeting the exposure requirements of multiple gratings. This allows for the formation of internally coupled gratings, folded gratings, and externally coupled gratings in a single process, saving manufacturing time and increasing production efficiency, especially in the mass production stage.

[0033] In Examples 1, 2, and 3 described above, the light beams can be interfered without a prism, and large-scale optical waveguide grating exposure becomes possible after the prism is removed, saving optical path costs. Furthermore, by performing a large-scale beam expansion on the light beam, a relatively large exposure area can be obtained. The holographic material has an optical waveguide sandwiched between two layers of glass. In the optical beam exposure method, similar to that with a prism, the sixth light beam b and the ninth light beam c are exposed on the holographic material to form an internal coupled grating, the fifth light beam a and the ninth light beam c are exposed on the holographic material to form a folded grating, and the sixth light beam b and the tenth light beam d are exposed on the holographic material to form an external coupled grating. Three different grating vectors can be produced by completing the exposure at once to manufacture a two-dimensional optical waveguide sheet. Three different gratings are formed by interfering the light beams by adjusting the incident angles of the different light beams when constructing the exposure optical path.

[0034] In the embodiments of this application, a first monochromatic light generator 01, a second monochromatic light generator 22, and a third monochromatic light generator 36 are provided, enabling full-color display, and the first monochromatic light generator 01, the second monochromatic light generator 22, and the third monochromatic light generator 36 can generate a laser of any one of the following colors: red, green, or blue.

[0035] Example 4 As shown in Figures 4, 5, and 6, the systems provided in Examples 1, 2, and 3 further include a first prism 51. Specifically, the holographic material 20 is installed on one side of the first prism 51, the beam limiter 21 is installed between the first prism 51 and the holographic material 20, and the beam limiter 21 may consist of an aperture and a mask plate.

[0036] The sixth light beam b and the ninth light beam c are exposed onto the holographic material 20 after their incident light angles are adjusted by the first prism 51 to form an internal coupled grating, the fifth light beam a and the ninth light beam c are exposed onto the holographic material 20 after their incident light angles are adjusted by the first prism 51 to form a folded grating, and the sixth light beam b and the tenth light beam d are exposed onto the holographic material 20 after their incident light angles are adjusted by the first prism 51 to form an external coupled grating. When the fifth light beam a and the sixth light beam b are exposed on the front of the first prism 51, and the ninth light beam c and the tenth light beam d are all exposed on the back surface of the holographic material 20, a transmissive optical waveguide lens is formed as shown in Figures 4, 5, and 6.

[0037] In this embodiment, a light beam is interferentially exposed to the holographic material 20 from one side to form a reflective volume holographic optical waveguide. When performing reflective volume optical waveguide exposure, the interfering light is incident on the holographic material from one side to interfere and form a grid in the holographic material.

[0038] Example 5 As shown in Figures 7, 8, and 9, the embodiment further includes a second prism 50, based on Embodiment 4. The holographic material 20 is placed between the first prism 51 and the second prism 50, and the beam limiter 21 is placed between the first prism 51 and the holographic material 20. The beam limiter 21 may consist of an aperture and a mask plate.

[0039] The sixth light beam b and the ninth light beam c are exposed onto the holographic material 20 after their incident light angles are adjusted by the first prism 51 and the second prism 50 to form an internal coupled grating. The fifth light beam a and the tenth light beam d are exposed onto the holographic material 20 after their incident light angles are adjusted by the first prism 51 and the second prism 50 to form a folded grating. The sixth light beam b and the tenth light beam d are exposed onto the holographic material 20 after their incident light angles are adjusted by the first prism 51 and the second prism 50 to form an external coupled grating. When the fifth light beam a and the sixth light beam b are exposed in front of the first prism 51, and the ninth light beam c and the tenth light beam d are all exposed in front of the second prism 50, a transmissive optical waveguide lens is formed.

[0040] In this embodiment, interference exposure is performed on the holographic material 20 from both sides to form a reflective volume holographic optical waveguide. When performing reflective volume optical waveguide exposure, interference light is incident on the holographic material 20 from both sides to cause interference and form a grating in the holographic material.

[0041] Two-dimensional optical waveguide mirrors can be manufactured by Examples 1 to 5.

[0042] In the embodiments of this application, when assembling the AR device, it is necessary to select the light emission method of one-dimensional optical waveguides and two-dimensional optical waveguides according to the arrangement shape of the grid, the size of the optical device, and the size of the glasses, and the exposure method of the optical path can be adjusted at any time by adjusting the light emission method of the external coupled grid. Taking the exposure optical path of a transmissive grating as an example, if the optical instrument needs to emit light on the same side as the optical waveguide, as shown in Figures 1 to 9, the sixth optical beam b and the ninth optical beam c expose the holographic material 20 to form an internal coupled grating, the fifth optical beam a and the ninth optical beam c expose the holographic material 20 to form a folded grating, and the sixth optical beam b and the tenth optical beam d expose the holographic material 20 to form an external coupled grating. Conversely, if the optical instrument needs to emit light on a side different from the optical waveguide, the sixth optical beam b and the ninth optical beam c expose the holographic material 20 to form an internal coupled grating, the fifth optical beam a and the ninth optical beam c expose the holographic material 20 to form a folded grating, and the fifth optical beam a and the sixth optical beam b expose the holographic material 20 to form an external coupled grating.

[0043] Example 6 As shown in Figures 10 to 18, based on Examples 1 to 5, a light-shielding plate (not shown) is installed on the side of the holographic material 20 closest to the first monochromatic light generator 01, and the light-shielding plate (not shown) shields the fifth light beam a and the tenth light beam d to form a one-dimensional optical waveguide lens.

[0044] Finally, it should be noted that the embodiments described above are merely for illustrative purposes and do not limit the technical proposal of this application. Although the present application has been described in detail with reference to the embodiments described above, it should be understood by those skilled in the art that the technical proposal described in the embodiments above can still be modified, or some or all of its technical features can be replaced with equivalent ones, but such modifications or replacements do not cause the essence of the technical proposal to deviate from the scope of the technical proposal of each embodiment of this application.

Claims

1. A system for manufacturing optical waveguide lenses, comprising a first monochromatic light generator, a first light input controller, a first half-wave plate, a first beam splitter, a first optical path, and a second optical path. The first optical path includes a second half-wave plate, a first beam expander, and a first collimator. The second optical path includes a first reflective mirror, a second beam expander, and a second collimator. The monochromatic light emitted from the first monochromatic light generator is processed sequentially by the first light input controller and the first half-wave plate, and then split into a first light beam and a second light beam by the first beam splitter. The first optical beam is processed sequentially by a second half-wave plate, a first beam expander, and a first collimator in the first optical path, and then split into a third optical beam and a fourth optical beam by a second beam splitter. The third optical beam then passes through a second reflective mirror to obtain a fifth optical beam, and the fourth optical beam then passes through a third reflective mirror to obtain a sixth optical beam. The second optical beam is processed sequentially by the first reflective mirror, the second beam expander, and the second collimator in the second optical path, and then split into a seventh optical beam and an eighth optical beam by the third beam splitter. The seventh optical beam then passes through the fourth reflective mirror and the fifth reflective mirror to obtain the ninth optical beam, and the eighth optical beam then passes through the sixth reflective mirror to obtain the tenth optical beam. The sixth and ninth light beams are exposed onto the holographic material to form an internal coupling grating, the fifth and ninth light beams are exposed onto the holographic material to form a folded grating, the sixth and tenth light beams are exposed onto the holographic material to form an external coupling grating, and furthermore, a two-dimensional optical waveguide lens is formed. A system for manufacturing an optical waveguide lens, characterized in that a beam limiter is installed on the side of the holographic material closest to the first monochromatic light generator.

2. It further includes a second monochromatic light generator, a second light input controller, a third half-wave plate, and a fourth beam splitter. The monochromatic light emitted from the second monochromatic light generator is processed sequentially by the second light input controller, the third half-wave plate, and the fourth beam splitter to obtain the eleventh and twelfth light beams. The eleventh light beam is processed in order by a fourth half-wave plate, a seventh reflective mirror, and a third beam expander, and then incident on a first dichroic mirror, which is positioned between the first beam expander and the first collimator. The system for manufacturing an optical waveguide lens according to claim 1, characterized in that the twelve light beams are processed in order by an eighth reflective mirror, a ninth reflective mirror and a fourth beam expander before being incident on a second dichroic mirror, the second dichroic mirror being positioned between a second beam expander and a second collimator.

3. It further includes a third monochromatic light generator, a third light input controller, a fifth half-wave plate, and a fifth beam splitter. A tenth reflective mirror is installed between the second half-wave plate and the first beam expander, and a third dichroic mirror is installed between the first beam expander and the first dichroic mirror. An eleventh reflective mirror is installed between the first reflective mirror and the second beam expander, and a fourth dichroic mirror is installed between the second beam expander and the second dichroic mirror. The monochromatic light emitted from the third monochromatic light generator is processed sequentially by the third light input controller, the fifth half-wave plate, and the fifth beam splitter to obtain the thirteenth and fourteenth light beams. The thirteenth light beam is then processed by the sixth half-wave plate and the fifth beam expander, and then incident on the third dichroic mirror. The system for manufacturing an optical waveguide lens according to claim 2, characterized in that the fourteenth optical beam is subsequently processed by a twelfth reflective mirror and a sixth beam expander before being incident on a fourth dichroic mirror.

4. Further filters are included, A system for manufacturing an optical waveguide lens according to claim 3, characterized in that the optical beams processed by the first beam expander, second beam expander, third beam expander, fourth beam expander, fifth beam expander, and sixth beam expander are each processed by a filter.

5. Further including the first prism, The holographic material is installed on the side of the first prism away from the first monochromatic light generator, and the beam limiter is installed between the first prism and the holographic material. A system for manufacturing an optical waveguide lens according to claim 3, characterized in that the sixth and ninth light beams are exposed onto a holographic material to form an internal coupling grating after their incident light angles are adjusted by a first prism, the fifth and ninth light beams are exposed onto a holographic material to form a folded grating after their incident light angles are adjusted by a first prism, and the sixth and tenth light beams are exposed onto a holographic material to form an external coupling grating after their incident light angles are adjusted by a first prism.

6. Including a second prism, The holographic material is placed between the first prism and the second prism, and the beam limiter is placed between the first prism and the holographic material. A system for manufacturing an optical waveguide lens according to claim 5, characterized in that the sixth and ninth light beams are exposed to a holographic material to form an internal coupling grating after their incident light angles are adjusted by a first prism and / or a second prism, the fifth and ninth light beams are exposed to a holographic material to form a folded grating after their incident light angles are adjusted by a first prism and / or a second prism, and the sixth and tenth light beams are exposed to a holographic material to form an external coupling grating after their incident light angles are adjusted by a first prism and / or a second prism.

7. A system for manufacturing an optical waveguide lens according to any one of claims 1 to 6, characterized in that a light-shielding plate is installed on the side of the holographic material closest to the first monochromatic light generator, and the sixth and ninth light beams are shielded by the light-shielding plate to form a one-dimensional optical waveguide lens.