AR (Augmented Reality) lens with lighting effect improving function and AR glasses

Abstract

The utility model discloses an AR lens with a lighting effect improving function and AR glasses, comprising an optical waveguide lens, two sides of the optical waveguide lens are respectively provided with an inner side surface and an outer side surface, the inner side surface is provided with a light coupling-in area, the outer side surface is provided with a light coupling-out area, the optical waveguide lens is internally provided with a total reflection area, and the total reflection area is provided with a light emitting area. Under the effect of the total reflection area, light rays entering the light ray coupling-in area can be emitted out of the light ray coupling-out area. Wherein an anti-reflection coating is evaporated on the inner side surface, and the reflection of light on the surface of the light coupling-in area can be reduced under the action of the anti-reflection coating. According to the AR lens with the lighting effect improving function and the AR glasses provided by the utility model, the anti-reflection coating is designed on the inner side surface of the conventional optical waveguide lens, so that the reflection of light rays on the surface of a light ray coupling-in area can be reduced, and more light rays enter the optical waveguide lens to improve the utilization rate of the lighting effect.

Description

Technical Field

[0001] This utility model relates to the field of AR glasses technology, and in particular to an AR lens and AR glasses with light efficiency enhancement function. Background Technology

[0002] AR glasses are augmented reality glasses that overlay virtual images onto real-world scenes, allowing users to experience a blend of virtual and real worlds. AR glasses typically include a display, computer vision technology, sensors, and wireless connectivity. They can be used in various applications such as gaming, education, healthcare, and manufacturing. Their main advantages include a more immersive user experience and higher efficiency, while also helping users better understand and master complex information and skills.

[0003] Conventional AR glasses, despite their small size, contain a large number of electronic components and batteries. To achieve longer battery life, continuous structural improvements are needed. The basic principle of AR glasses is that the light generated by micro LEDs or microOLEDs, which act as image generators, enters the human eye through optical waveguide lenses. However, conventional optical waveguide lenses have low light efficiency. Therefore, improving the light efficiency of optical waveguide lenses can save energy and improve battery life. To this end, an AR lens and AR glasses with light efficiency enhancement function are proposed. Utility Model Content

[0004] Therefore, it is necessary to provide an AR lens and AR glasses with light efficiency enhancement function to address the above-mentioned technical problems. The design of an anti-reflective coating on the surface of a conventional optical waveguide lens can reduce the reflection of light on the surface of the light coupling area, allowing more light to enter the optical waveguide lens and improving the utilization rate of light efficiency.

[0005] An AR lens with light efficiency enhancement function includes an optical waveguide lens, with an inner side and an outer side on both sides of the optical waveguide lens, a light coupling area on the inner side and a light coupling area on the outer side, and a total internal reflection area inside the optical waveguide lens, which allows light incident in the light coupling area to exit in the light coupling area due to the action of the total internal reflection area.

[0006] An anti-reflective coating is vapor-deposited on the inner surface, which reduces the reflection of light on the surface of the light-coupled area.

[0007] Furthermore, the outer surface has a reflective coating deposited on it.

[0008] Furthermore, the optical waveguide lens is surrounded by a protective frame, and the optical waveguide lens and the protective frame together form an optical waveguide lens body.

[0009] Furthermore, the optical waveguide mirror body has two.

[0010] AR glasses include an AR lens with light efficiency enhancement function, an image generator and a frame, wherein one side of the image generator has a light emitting end face and the light emitting end face is correspondingly arranged with the light coupling area;

[0011] The surface of the light emitting end face is coated with an end face anti-reflection coating.

[0012] Furthermore, the frame has two symmetrically arranged lens slots, the two optical waveguide mirrors are distributed in the corresponding lens slots, and the image generator also has two, each corresponding to a corresponding light coupling area.

[0013] Furthermore, the lens groove has a limiting protrusion on the side near the inner side, and the limiting protrusion can make the optical waveguide lens on the optical waveguide mirror body completely exposed to the outside.

[0014] Furthermore, a fixing silicone frame is attached to the inner side of the lens groove near the outer side, and a protective cover is also fastened to the outer side of the lens groove. The inner side of the protective cover abuts against the surface of the fixing silicone frame to press the optical waveguide mirror body tightly.

[0015] Furthermore, the frame has a movable groove at its center, and fixed plates are slidably provided on both sides inside the movable groove, and a fixed groove is provided on one side of the protective cover corresponding to the position of the fixed plate.

[0016] The surface of the fixed plate is connected to a spring that is connected to the side wall of the movable groove.

[0017] Furthermore, a rotating column is movably connected to the middle of the movable groove, and abutment rods are fixed on both sides of the surface of the rotating column;

[0018] One end of the abutment rod has a rounded end face, and an inner arc groove adapted to the rounded end face is provided at the center of one side of the fixing plate. After rotating the rotating column to make the two abutment rods horizontal, the rounded end face can be inserted into the inner arc groove.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The AR lens with light efficiency enhancement provided by this utility model has an anti-reflection coating on the inner side of a conventional optical waveguide lens. This reduces the reflection of light on the surface of the light coupling area, allowing more light to enter the optical waveguide lens and improving the utilization rate of light efficiency.

[0021] Meanwhile, the design of a reflective coating on the outer surface allows as much light as possible to be reflected from the light-out area. After reflection, the light from the light-out area reaches the light-in area. Since the light-in area is coated with an anti-reflective coating, more light is transmitted, thereby improving the light efficiency from insertion to extraction in the lens, reducing light loss, and achieving energy conservation.

[0022] By depositing an anti-reflective coating on the light emitting end face of the image generator, the reflectivity of the lens group inside the image generator is reduced, thereby improving the energy efficiency of the image from the image generator to the light coupling area. Attached Figure Description

[0023] Figure 1 A schematic diagram of the structure of the AR lens with light efficiency enhancement function provided by this utility model;

[0024] Figure 2 A schematic diagram of the optical waveguide lens structure for the AR lens with light efficiency enhancement function provided by this utility model;

[0025] Figure 3 A schematic diagram of the optical waveguide lens in use for the AR lens with light efficiency enhancement function provided by this utility model;

[0026] Figure 4 A schematic diagram of the frame structure of the AR glasses provided by this utility model;

[0027] Figure 5 A schematic diagram of the disassembled frame structure of the AR glasses provided by this utility model;

[0028] Figure 6 A schematic diagram of the internal structure of the lens groove of the AR glasses provided by this utility model;

[0029] Figure 7 A schematic diagram of the unfixed protective cover of the AR glasses provided by this utility model;

[0030] Figure 8 A schematic diagram of the fixed state structure of the protective cover plate for AR glasses provided by this utility model;

[0031] Figure 9 This is a schematic diagram of the rotating column structure of the AR glasses provided by this utility model.

[0032] The markings in the diagram are explained as follows:

[0033] 1. Optical waveguide mirror body, 11. Inner side, 12. Outer side, 13. Anti-reflective coating, 14. Reflective coating, 15. Protective frame, 16. Optical waveguide lens;

[0034] Light coupling region 2;

[0035] Light coupling region 3;

[0036] Total reflection area 4;

[0037] Image generator 5, light emitting end face 51, end face anti-reflection coating 52;

[0038] 6. Frame, 61. Lens groove, 62. Limiting protrusion, 63. Fixed silicone frame, 64. Movable groove, 65. Fixing plate, 66. Spring, 67. Rotating column, 68. Abutting rod;

[0039] Inner arc groove 650;

[0040] 680° arc end face;

[0041] 7. Protective cover plate; 71. Fixing groove. Detailed Implementation

[0042] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0043] As described in the background section, conventional optical waveguide lenses have low light efficiency and cannot effectively improve the light efficiency of optical waveguide lenses to achieve energy savings.

[0044] To solve this technical problem, this utility model provides an AR lens with light efficiency enhancement function, which is applied to AR glasses.

[0045] For details, please refer to Figures 1-9 As shown, the AR lens with light efficiency enhancement function specifically includes an optical waveguide lens 16. The optical waveguide lens 16 has an inner side 11 and an outer side 12 on both sides. The inner side 11 has a light coupling region 2, and the outer side 12 has a light coupling region 3. The optical waveguide lens 16 has a total reflection region 4. The total reflection region 4 can cause the light incident in the light coupling region 2 to be emitted in the light coupling region 3.

[0046] An anti-reflective coating 13 is vapor-deposited on the inner side 11, which reduces the reflection of light on the surface of the light coupling region 2.

[0047] The AR lens with light efficiency enhancement provided by this utility model is designed with an anti-reflection coating 13 on the inner side of the conventional optical waveguide lens 16. This reduces the reflection of light on the surface of the light coupling area 2, allowing more light to enter the optical waveguide lens 16 and improving the utilization rate of light efficiency.

[0048] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0049] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0050] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0051] Example 1

[0052] Please refer to Figures 1-3 As shown, an AR lens with light efficiency enhancement function includes an optical waveguide lens 16. The optical waveguide lens 16 has an inner side 11 and an outer side 12 on both sides. The inner side 11 has a light coupling region 2, and the outer side 12 has a light coupling region 3. The optical waveguide lens 16 has a total reflection region 4. The total reflection region 4 can cause the light incident in the light coupling region 2 to be emitted in the light coupling region 3.

[0053] An anti-reflective coating 13 is deposited on the inner side 11, which reduces the reflection of light on the surface of the light coupling region 2.

[0054] like Figure 2 As shown, this embodiment features an anti-reflective coating 13 on the inner side, which reduces light reflection on the surface of the light coupling region 2, allowing more light to enter the optical waveguide lens 16 and improving the utilization rate of light efficiency.

[0055] As a further optimization in this embodiment: the outer surface 12 has a reflective coating 14 deposited on it;

[0056] By designing the reflective coating 14, as much light as possible is reflected from the light-out region 3. After being reflected, the light from the light-out region 3 reaches the light-in region 2. Since the anti-reflective coating 13 is deposited on the light-in region 2, more light is transmitted, thereby improving the light efficiency from insertion to extraction in the lens, reducing light loss, and achieving energy saving.

[0057] The anti-reflective coating 13 used above is a conventional single-layer AR coating: it is composed of only one material, silicon dioxide (SiO2), but other materials can also be used. Since this is a conventional technique in the field, it is not further elaborated in this embodiment.

[0058] Similarly, the materials mainly used for the reflective coating 14 include one of silver, aluminum, gold, chromium, titanium and indium tin oxide (ITO), and aluminum can be used in this embodiment.

[0059] The optical waveguide lens 16 is surrounded by a protective frame 15. The optical waveguide lens 16 and the protective frame 15 together form an optical waveguide mirror body 1. There are two optical waveguide mirror bodies 1, such as... Figure 1 As shown, the two optical waveguide mirrors 1 are symmetrical.

[0060] Example 2

[0061] This embodiment proposes an AR glasses based on the above embodiment one, such as... Figures 4-9 As shown, it includes an AR lens with light efficiency enhancement function, an image generator 5 and a frame 6. The image generator 5 has a light emitting end face 51 on one side, and the light emitting end face 51 is correspondingly arranged with the light coupling area 2. The surface of the light emitting end face 51 is coated with an end face anti-reflection coating 52.

[0062] In this embodiment, by depositing an anti-reflective coating 52 on the light emitting end face 51 of the image generator 5, the reflectivity of the lens group inside the image generator is reduced, thereby improving the energy efficiency of the image from the image generator to the light coupling area.

[0063] The anti-reflective coating 5 described above can be achieved using the single-layer AR coating technology described in Example 1, or it can be achieved using the multi-layer AR coating technology. The specific coating method can be adjusted according to the actual application scenario.

[0064] The frame 6 has two symmetrically arranged lens slots 61, and the two optical waveguide mirrors 1 are distributed in the corresponding lens slots 61. The image generator 5 also has two, which are respectively arranged in relation to the corresponding light coupling area 2.

[0065] Example 3

[0066] The AR glasses with light efficiency enhancement function provided in Embodiment 2 are further optimized, such as... Figures 4-9 As shown, the lens groove 61 has a limiting protrusion 62 on the side near the inner side 11. The limiting protrusion 62 can make the optical waveguide lens 16 on the optical waveguide mirror body 1 completely exposed to the outside.

[0067] A fixing silicone frame 63 is attached to the inside of the lens groove 61 near the outer side 12. A protective cover plate 7 is also fastened to the outside of the lens groove 61. The inner side of the protective cover plate 7 abuts against the surface of the fixing silicone frame 63 to press the optical waveguide mirror body 1.

[0068] The frame 6 has a movable groove 64 at its center. Fixing plates 65 are slidably provided on both sides inside the movable groove 64. The protective cover 7 has a fixing groove 71 on one side corresponding to the position of the fixing plate 65. A spring 66 connected to the side wall of the movable groove 64 is connected to the surface of the fixing plate 65.

[0069] A rotating column 67 is movably connected to the middle of the movable groove 64, and abutting rods 68 are fixed on both sides of the surface of the rotating column 67, with the two abutting rods 68 on the same straight line.

[0070] One end of the abutment rod 68 has an arc end face 680, and an inner arc groove 650 adapted to the arc end face 680 is provided at the center of one side of the fixing plate 65. After rotating the rotating column 67 so that the two abutment rods 68 are in a horizontal state, the arc end face 680 can be inserted into the inner arc groove 650.

[0071] Specifically, the waveguide mirror body 1 is placed in the lens groove 61 so that it is tightly attached to the limiting protrusion 62. Then, the fixing silicone frame 63 is placed on one side of the waveguide mirror body 1. Then, the protective cover plate 7 is placed in the keyway 61 so that it is tightly attached to the fixing silicone frame 63. Press the protective cover plate 7 so that the fixing silicone frame 63 is compressed to a small extent. Then, the rotating column 67 can be rotated externally so that the two ends of the abutment rod 68 abut against the surface of the fixing plate 65. During the abutment process, the fixing plate 65 will slide outward and insert into the corresponding fixing groove 71. Finally, the arc end face 680 abuts against the inner arc groove 650, so that the fixing plate 65 fixes the protective cover plate 7.

[0072] At this time, the fixed plate 65 can be pressed against the abutment rod 68 by the action of the spring 66, and the arc end face 680 on the abutment rod 68 is engaged with the inner arc groove 650, thus ensuring the stability of the abutment rod 68 and preventing it from sliding on its own without the action of external force.

[0073] The design of the protective cover 7 can protect the optical waveguide mirror body 1. At the same time, the rotatable arc 67 can release the contact rod 68 from contact with the fixing plate 65, and the action of the spring 66 can release the fixing plate 65 from the limit of the protective cover 7, so that the optical waveguide mirror body 1 can be removed, thus facilitating the replacement or maintenance of the optical waveguide mirror body 1 in actual application.

[0074] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0075] Obviously, the embodiments described above are only some embodiments of this utility model, not all embodiments. The accompanying drawings show preferred embodiments of this utility model, but do not limit the patent scope of this utility model. This utility model can be implemented in many different forms; rather, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this utility model specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the patent protection scope of this utility model.

Claims

1. An AR lens with light efficiency enhancement function, characterized in that, The optical waveguide lens (16) has an inner side (11) and an outer side (12) on both sides. The inner side (11) has a light-incidence region (2) and the outer side (12) has a light-outcidence region (3). The optical waveguide lens (16) has a total reflection region (4). The total reflection region (4) allows light incident in the light-incidence region (2) to exit in the light-outcidence region (3). An anti-reflective coating (13) is vapor-deposited on the inner side (11), which reduces the reflection of light on the surface of the light coupling region (2).

2. An AR lens with light efficiency enhancement function according to claim 1, characterized in that, The outer surface (12) has a reflective coating (14) deposited on it.

3. An AR lens with light efficiency enhancement function according to claim 1, characterized in that, The optical waveguide lens (16) is surrounded by a protective frame (15), and the optical waveguide lens (16) and the protective frame (15) together form the optical waveguide body (1).

4. An AR lens with light efficiency enhancement function according to claim 3, characterized in that, The optical waveguide mirror body (1) has two.

5. AR glasses, comprising an AR lens with light efficiency enhancement function as described in any one of claims 3-4, characterized in that, It also includes an image generator (5) and a frame (6). The image generator (5) has a light emitting end face (51) on one side, and the light emitting end face (51) is correspondingly arranged with the light coupling area (2). The surface of the light emitting end face (51) is coated with an end face anti-reflection coating (52).

6. The AR glasses according to claim 5, characterized in that, The frame (6) has two symmetrically arranged lens slots (61), and the two optical waveguide mirrors (1) are distributed in the corresponding lens slots (61). The image generator (5) also has two and is respectively arranged in relation to the corresponding light coupling area (2).

7. The AR glasses according to claim 6, characterized in that, The lens groove (61) has a limiting protrusion (62) on the side near the inner side (11). The limiting protrusion (62) allows the optical waveguide lens (16) on the optical waveguide mirror body (1) to be completely exposed to the outside.

8. The AR glasses according to claim 7, characterized in that, A fixing silicone frame (63) is attached to the inside of the lens groove (61) near the outer side (12). A protective cover plate (7) is also fastened to the outside of the lens groove (61). The inner side of the protective cover plate (7) abuts against the surface of the fixing silicone frame (63) to press the optical waveguide mirror body (1).

9. The AR glasses according to claim 8, characterized in that, The frame (6) has a movable groove (64) at its center, and fixed plates (65) are slidably provided on both sides inside the movable groove (64). The protective cover (7) has a fixed groove (71) on one side corresponding to the fixed plate (65). The surface of the fixed plate (65) is connected to a spring (66) that is connected to the side wall of the movable groove (64).

10. The AR glasses according to claim 9, characterized in that, A rotating column (67) is movably connected to the middle of the movable groove (64), and abutment rods (68) are fixed on both sides of the surface of the rotating column (67). One end of the abutment rod (68) has an arc end face (680), and an inner arc groove (650) adapted to the arc end face (680) is provided at the center of one side of the fixing plate (65). After rotating the rotating column (67) so that the two abutment rods (68) are in a horizontal state, the arc end face (680) can be inserted into the inner arc groove (650).

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