Optical waveguide lens and AR glasses

Abstract

The utility model belongs to the technical field of glasses, and discloses an optical waveguide lens and AR glasses, and the optical waveguide lens comprises a waveguide sheet, a first protective lens and a second protective lens. The first protective lens comprises a first lens body and a first enclosure arranged on the first lens body in a protruding mode in the circumferential direction, a mounting groove is defined by the first enclosure and the first lens body, and the waveguide sheet is clamped in the mounting groove. The second protective lens is stacked on the side, away from the first protective lens, of the waveguide sheet, and the second protective lens is bonded and fixed to the first fence of the first protective lens. According to the optical waveguide lens, the waveguide sheet can be fully protected, the impact resistance of the optical waveguide lens is improved, the waveguide sheet can be prevented from being scratched and polluted, the influence on the use effect of a user is avoided, and the service life of AR glasses can be prolonged when the optical waveguide lens is used for manufacturing the AR glasses.

Description

Technical Field

[0001] This utility model relates to the field of eyewear technology, and in particular to an optical waveguide lens and AR glasses. Background Technology

[0002] With the continuous development of technology, AR devices are becoming increasingly mature. AR glasses are wearable devices that integrate virtual information with real-world scenes, providing users with virtual text, images, and videos. The lenses of AR glasses are waveguide lenses, which can blend virtual images with real-world scenes and present them to the user.

[0003] In existing technologies, optical waveguide lenses typically consist of a waveguide sheet and a protective sheet, with the protective sheet stacked on top of the waveguide sheet. A ring-shaped adhesive is applied to the edge region of the waveguide sheet, and the waveguide sheet and protective sheet are bonded and fixed together using this adhesive. This type of optical waveguide lens only has a single layer of protective sheet stacked on the outer side of the waveguide sheet. This provides poor protection for the waveguide sheet, resulting in poor impact resistance and a reduced lifespan for AR glasses. Furthermore, the inner side of the waveguide sheet is easily scratched by wiping and readily accumulates dust and other contaminants, affecting the user experience. Utility Model Content

[0004] The purpose of this invention is to provide an optical waveguide lens and AR glasses that can fully protect the waveguide sheet, improve the impact resistance of the optical waveguide lens, extend the service life of the AR glasses, and prevent the waveguide sheet from being scratched or contaminated, thus avoiding affecting the user's experience.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A first aspect provides an optical waveguide lens, including a waveguide sheet, a first protective lens, and a second protective lens. The first protective lens includes a first lens body and a first enclosure protruding circumferentially from the first lens body. The first enclosure and the first lens body form a mounting groove. The waveguide sheet is engaged in the mounting groove. The second protective lens is stacked on the side of the waveguide sheet opposite to the first protective lens. The second protective lens is bonded and fixed to the first enclosure of the first protective lens.

[0007] Optionally, the inner wall of the mounting groove is provided with a stepped structure along the circumference, the waveguide sheet is mounted on the stepped structure, and the second protective lens includes a second lens body and a second enclosure protruding from the second lens body along the circumference. The second enclosure is bonded and fixed to the first enclosure, and the second enclosure abuts against the waveguide sheet so that the waveguide sheet and the second lens body are spaced apart.

[0008] Optionally, the stepped structure is provided with a first anti-slip structure, and the stepped structure makes frictional contact with the waveguide sheet through the first anti-slip structure;

[0009] And / or,

[0010] The second enclosure is provided with a second anti-slip structure, and the second enclosure makes frictional contact with the waveguide sheet through the second anti-slip structure.

[0011] Optionally, both the side of the first lens body facing the waveguide sheet and the side of the second lens body facing the waveguide sheet are provided with an optical reflection coating.

[0012] Optionally, the optical reflective coating includes an AI film coating.

[0013] Optionally, both the side of the first lens body facing away from the waveguide sheet and the side of the second lens body facing away from the waveguide sheet are provided with an anti-fouling coating.

[0014] Optionally, the antifouling coating includes an AR coating.

[0015] Optionally, the waveguide sheet includes a third lens body and a positioning protrusion. The first enclosure has a locking opening, and the third lens body is locked in the locking opening. The positioning protrusion is disposed on the side of the third lens body facing the second protective lens. The second protective lens has a positioning groove, and the positioning protrusion is locked in the positioning groove.

[0016] Optionally, the outer wall of the first enclosure is provided with an adhesive groove along the circumference, and an adhesive component is provided in the adhesive groove to bond and fix the first enclosure and the second protective lens.

[0017] The second aspect provides an AR glasses, including a frame and two optical waveguide lenses as described above. The frame is provided with two lens mounting slots, and the two optical waveguide lenses are respectively mounted in the two lens mounting slots.

[0018] The beneficial effects of this utility model are:

[0019] This invention provides an optical waveguide lens and AR glasses. The waveguide includes a waveguide sheet, a first protective lens, and a second protective lens. By fitting the waveguide sheet into the mounting groove of the first protective lens, the first guard can circumferentially wrap around the edge of the waveguide sheet. Furthermore, by bonding and fixing the second protective lens to the first guard of the first protective lens, both the inner and outer sides of the waveguide sheet are wrapped, thus fully protecting the waveguide sheet, improving the overall impact resistance of the optical waveguide lens, and preventing scratches and contamination, thereby avoiding affecting the user experience. In addition, using the optical waveguide lens described above to manufacture AR glasses can extend the lifespan of the AR glasses, which is beneficial to improving the user experience. Attached Figure Description

[0020] Figure 1 This is a first view of the optical waveguide lens provided in this embodiment of the present invention;

[0021] Figure 2 This is a cross-sectional view of the optical waveguide lens provided in an embodiment of this utility model;

[0022] Figure 3 This is an exploded view of the optical waveguide lens provided in an embodiment of this utility model.

[0023] In the picture:

[0024] 1. Waveguide sheet; 11. Third lens body; 12. Positioning protrusion;

[0025] 2. First protective lens; 21. First lens body; 22. First enclosure; 221. Clip opening; 222. Adhesive groove; 23. Mounting groove; 231. Step structure;

[0026] 3. Second protective lens; 31. Second lens body; 32. Second enclosure; 321. Positioning groove. Detailed Implementation

[0027] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0028] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" 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 or an electrical connection; 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. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0030] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0031] Example 1

[0032] This embodiment provides an optical waveguide lens, such as Figure 1 As shown in the figure, the waveguide lens can fully protect the waveguide sheet 1, improve the impact resistance of the optical waveguide lens, and prevent the waveguide sheet 1 from being scratched or contaminated, thus avoiding affecting the user's experience.

[0033] like Figures 1 to 3As shown, the optical waveguide lens includes a waveguide sheet 1, a first protective lens 2, and a second protective lens 3. The first protective lens 2 includes a first lens body 21 and a first enclosure 22 protruding circumferentially from the first lens body 21. The first enclosure 22 and the first lens body 21 form a mounting groove 23, in which the waveguide sheet 1 is secured. The second protective lens 3 is stacked on the side of the waveguide sheet 1 facing away from the first protective lens 2, and is bonded and fixed to the first enclosure 22 of the first protective lens 2. Therefore, the waveguide sheet 1 is sandwiched between the first protective lens 2 and the second protective lens 3, and is completely enclosed by both.

[0034] By fitting the waveguide 1 into the mounting groove 23 of the first protective lens 2, the first enclosure 22 can wrap around the edge of the waveguide 1 circumferentially. Furthermore, by bonding and fixing the second protective lens 3 to the first enclosure 22 of the first protective lens 2, both the inner and outer sides of the waveguide 1 can be wrapped, thereby fully protecting the waveguide 1, improving the overall impact resistance of the optical waveguide lens, and preventing the waveguide 1 from being scratched or contaminated, thus avoiding affecting the user's experience.

[0035] It should be noted that when using this optical waveguide lens, one side of the second protective lens 3 is the inner side. Light is transmitted from the first protective lens 2 to the waveguide 1, then to the second protective lens 3, and finally to the user. Furthermore, the waveguide 1, the first protective lens 2, and the second protective lens 3 can be designed in any shape according to actual needs, such as hyperboloid myopia lenses, single-curved myopia lenses, or flat non-prescription lenses, etc., without limitation here.

[0036] Optionally, such as Figures 1 to 3 As shown, the inner wall of the mounting groove 23 is provided with a stepped structure 231 along the circumferential direction, and the waveguide sheet 1 is mounted on the stepped structure 231. The second protective lens 3 includes a second lens body 31 and a second enclosure 32 protruding circumferentially from the second lens body 31. The second enclosure 32 is bonded and fixed to the first enclosure 22. The second enclosure 32 abuts against the waveguide sheet 1 so that the waveguide sheet 1 and the second lens body 31 are spaced apart. By setting the stepped structure 231, the waveguide plate 1 is placed on the stepped structure 231, and the second enclosure 32 abuts against the other side of the waveguide plate 1. This allows the first lens body 21 and the second lens body 31 to be spaced apart from the waveguide plate 1. On the one hand, the stepped structure 231 and the second enclosure 32 can support the waveguide plate 1, providing a support point for the waveguide plate 1, dispersing external impact force, and improving the impact resistance of the optical waveguide lens. On the other hand, air gaps are created between the first lens body 21 and the waveguide plate 1, and between the second lens body 31 and the waveguide plate 1, which is beneficial for heat dissipation of the waveguide plate 1.

[0037] Optionally, the stepped structure 231 is provided with a first anti-slip structure, and the second enclosure 32 is provided with a second anti-slip structure. The stepped structure 231 makes frictional contact with the waveguide sheet 1 through the first anti-slip structure, and the second enclosure 32 makes frictional contact with the waveguide sheet 1 through the second anti-slip structure. By providing the first and second anti-slip structures, the frictional force between the stepped structure 231 and the waveguide sheet 1, and between the second enclosure 32 and the waveguide sheet 1, can be increased, effectively preventing misalignment caused by excessively smooth surfaces of the waveguide sheet 1 in contact with the stepped structure 231 and the second enclosure 32.

[0038] For example, multiple raised patterns can be provided on the surface of the step structure 231 and the upper surface of the second enclosure 32 as anti-slip structures. The patterns are arranged in a matrix to cover the surface of the step structure 231 and the upper surface of the second enclosure 32. The patterns can be strip-shaped, rhomboid, hemispherical, etc., and appropriate patterns can be selected according to actual needs. There is no limitation here. In this embodiment, a rhomboid pattern is selected as the anti-slip structure.

[0039] In other embodiments, the pattern of the anti-slip structure can be randomly distributed or arranged in pairs with the same interval, depending on actual needs. This is not limited here.

[0040] Optionally, both the side of the first lens body 21 facing the waveguide plate 1 and the side of the second lens body 31 facing the waveguide plate 1 are provided with an optical reflective coating. By providing an optical reflective coating, the light reflection efficiency can be enhanced, and light rays that are not in the designed direction can be absorbed or reflected, reducing crosstalk between adjacent optical paths, improving the imaging clarity of the optical waveguide lens, and ensuring the user's user experience.

[0041] For example, the optical reflective coating includes an AI film coating.

[0042] Optionally, both the side of the first lens body 21 facing away from the waveguide sheet 1 and the side of the second lens body 31 facing away from the waveguide sheet 1 are provided with an anti-fouling coating. By providing an anti-fouling coating, the adhesion of fingerprints, sweat, cosmetics, and other stains can be significantly reduced, maintaining the surface cleanliness of the optical waveguide lens, thereby ensuring that the optical waveguide lens maintains its original light transmittance. When it is necessary to wipe the optical waveguide lens, the user can directly wipe the anti-fouling coating on the surface of the optical waveguide lens, which can avoid scratches on the optical waveguide lens and extend its service life.

[0043] For example, the antifouling coating includes an AF film coating.

[0044] Optionally, such as Figures 1 to 3As shown, the waveguide 1 includes a third lens body 11 and a positioning protrusion 12. The first enclosure 22 has a locking opening 221, within which the third lens body 11 is locked. The positioning protrusion 12 is located on the side of the third lens body 11 facing the second protective lens 3. The second protective lens 3 has a positioning groove 321, within which the positioning protrusion 12 is locked. By providing the locking opening 221, the third lens body 11 can be locked within it, thus ensuring the stability of the third lens body 11 during installation. It also provides positioning for the third lens body 11, allowing it to be precisely locked into the installation cavity according to a preset position. The positioning protrusion 12 and the positioning groove 321 work together to provide positioning for the second protective lens 3 and to secure the second protective lens 3 to the waveguide 1, preventing it from shaking or shifting and maintaining the overall structural stability.

[0045] Optionally, such as Figures 1 to 3 As shown, the outer wall of the first enclosure 22 is provided with an adhesive groove 222 along the circumferential direction. An adhesive component is provided in the adhesive groove 222 to adhesively fix the first enclosure 22 and the second protective lens 3. When adhesively fixing the first protective lens 2 and the second protective lens 3, it is only necessary to fill the adhesive groove 222 to adhesively fix the first enclosure 22 and the second enclosure 32 of the second protective lens 3.

[0046] For example, the adhesive includes a UV-curable adhesive.

[0047] In some embodiments, a snap-fit ​​groove may be provided at the end of the second enclosure 32, the first enclosure 22 may be snapped into the snap-fit ​​groove, and the first enclosure 22 and the second enclosure 32 may be connected and fixed by vibration friction welding.

[0048] Example 2

[0049] This embodiment proposes an AR glasses system, including a frame and two waveguide lenses as described above. The frame has two lens mounting slots, and the two waveguide lenses are respectively secured within the two lens mounting slots. By using the waveguide lenses described above to fabricate the AR glasses, the lifespan of the AR glasses can be extended, which is beneficial to improving the user experience.

[0050] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. An optical waveguide lens, characterized in that, The device includes a waveguide sheet (1), a first protective lens (2), and a second protective lens (3). The first protective lens (2) includes a first lens body (21) and a first enclosure (22) protruding circumferentially on the first lens body (21). The first enclosure (22) and the first lens body (21) form an installation groove (23). The waveguide sheet (1) is fitted into the installation groove (23). The second protective lens (3) is stacked on the side of the waveguide sheet (1) away from the first protective lens (2). The second protective lens (3) is bonded and fixed to the first enclosure (22) of the first protective lens (2).

2. The optical waveguide lens according to claim 1, characterized in that, The inner wall of the mounting groove (23) is provided with a stepped structure (231) along the circumferential direction. The waveguide sheet (1) is mounted on the stepped structure (231). The second protective lens (3) includes a second lens body (31) and a second enclosure (32) protruding along the circumferential direction on the second lens body (31). The second enclosure (32) is bonded and fixed to the first enclosure (22), and the second enclosure (32) abuts against the waveguide sheet (1) so that the waveguide sheet (1) and the second lens body (31) are spaced apart.

3. The optical waveguide lens according to claim 2, characterized in that, The stepped structure (231) is provided with a first anti-slip structure, and the stepped structure (231) makes frictional contact with the waveguide sheet (1) through the first anti-slip structure; And / or, The second enclosure (32) is provided with a second anti-slip structure, and the second enclosure (32) makes frictional contact with the waveguide sheet (1) through the second anti-slip structure.

4. The optical waveguide lens according to claim 2, characterized in that, An optical reflection coating is provided on the side of the first lens body (21) facing the waveguide sheet (1) and on the side of the second lens body (31) facing the waveguide sheet (1).

5. The optical waveguide lens according to claim 4, characterized in that, The optical reflective coating includes an AI film coating.

6. The optical waveguide lens according to claim 2, characterized in that, The first lens body (21) and the second lens body (31) are both provided with anti-fouling coatings on the side opposite to the waveguide sheet (1).

7. The optical waveguide lens according to claim 6, characterized in that, The antifouling coating includes an AR coating.

8. The optical waveguide lens according to any one of claims 1-7, characterized in that, The waveguide sheet (1) includes a third lens body (11) and a positioning protrusion (12). The first enclosure (22) has a locking opening (221). The third lens body (11) is locked in the locking opening (221). The positioning protrusion (12) is located on the side of the third lens body (11) facing the second protective lens (3). The second protective lens (3) has a positioning groove (321). The positioning protrusion (12) is locked in the positioning groove (321).

9. The optical waveguide lens according to any one of claims 1-7, characterized in that, The outer wall of the first enclosure (22) is provided with an adhesive groove (222) along the circumferential direction. An adhesive is provided in the adhesive groove (222) to bond and fix the first enclosure (22) and the second protective lens (3).

10. An AR glasses, characterized in that, The glasses include a frame and two optical waveguide lenses as described in any one of claims 1-9, wherein the frame is provided with two lens mounting slots and the two optical waveguide lenses are respectively mounted in the two lens mounting slots.

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