Intelligent glasses

Abstract

The utility model provides a pair of intelligent glasses. The intelligent glasses comprise a frame structure, a first adhesive layer and a lens, the lens comprises an optical waveguide layer, a cover plate and a reflecting layer, and the cover plate covers a first surface of the optical waveguide layer; the first adhesive layer is at least partially located in a contact area of the second surface of the optical waveguide layer and the frame structure and is used for fixing the lens and the frame structure, and the first surface and the second surface are opposite to each other; the reflecting layer is located between the first adhesive layer and the optical waveguide layer, and the projection of the reflecting layer on the optical waveguide layer covers an overlapping area between a light transmission area and the first adhesive layer. Through the arrangement of the reflecting layer, direct contact between the first adhesive layer and the optical waveguide layer is avoided, and the optical performance of the intelligent glasses is improved.

Description

Technical Field

[0001] This application belongs to the field of optical technology, and particularly relates to a smart glasses. Background Art

[0002] The waveguide lens of smart glasses is generally formed by laminating a waveguide layer and a cover plate layer with a lamination adhesive. Some waveguide lenses have two cover plate layers, and the waveguide layer is protected between the two cover plate layers. In order to reduce weight, some waveguide lenses have only one cover plate layer to protect the micro-nano structure on the waveguide layer. This structure causes the loss of optical performance such as light efficiency due to the lack of protection on the other side of the waveguide layer, which damages the total internal reflection propagation of light when assembled with other structural components. Utility Model Content

[0003] An object of an embodiment of the present utility model is to provide an improved smart glasses.

[0004] According to the first aspect of the application embodiment, a smart glasses is provided, including a frame structure, a first adhesive layer, and a lens, wherein:

[0005] The lens includes:

[0006] An optical waveguide layer, a cover plate, and a reflective layer;

[0007] The cover plate covers the first surface of the optical waveguide layer;

[0008] The first adhesive layer is at least partially located in the contact area between the second surface of the optical waveguide layer and the frame structure, and is used to fix the lens and the frame structure, and the first surface and the second surface are opposite to each other;

[0009] The reflective layer is located between the first adhesive layer and the optical waveguide layer, and the projection of the reflective layer on the optical waveguide layer covers the overlapping area between the light transmission area and the first adhesive layer.

[0010] Optionally, the reflective layer is a metal reflective film or a dielectric reflective film, and the reflective layer is set as a single-layer structure or a multi-layer structure.

[0011] Optionally, the reflective layer is plated on the surface of the optical waveguide layer.

[0012] Optionally, the smart glasses further includes a second adhesive layer, the second adhesive layer is arranged at the edge of the first surface of the optical waveguide layer, and the cover plate is bonded to the optical waveguide layer through the second adhesive layer.

[0013] Optionally, the bonding position of the second adhesive layer and the cover plate is located outside the light transmission area in the projection on the optical waveguide layer.

[0014] Optionally, it includes a spectacle frame and a front cover of the spectacle frame, and a space for carrying the edge area of the lens is formed between the spectacle frame and the front cover of the spectacle frame. The edge area at least includes a part of the contact area between the lens and the frame structure, and the frame structure is the spectacle frame or the front cover of the spectacle frame.

[0015] Optionally, the frame structure is a spectacle frame, the optical waveguide layer includes an input grating, and the input grating is disposed on the first surface of the optical waveguide layer;

[0016] The smart glasses further include an optical engine, the optical engine is located on a side of the optical waveguide layer away from the cover plate, and light rays of the optical engine are incident perpendicular to the second surface of the optical waveguide layer.

[0017] Optionally, the frame structure is a front cover of the spectacle frame, the optical waveguide layer includes an input grating, and the input grating is disposed on the first surface of the optical waveguide layer;

[0018] The smart glasses further include an optical engine, the optical engine is located on a side of the optical waveguide layer close to the cover plate, and light rays of the optical engine are incident perpendicular to the cover plate.

[0019] Optionally, the light transmission area includes the input grating and the area of the optical waveguide layer through which light rays pass starting from the input grating.

[0020] Optionally, the reflective layer is a total reflection layer.

[0021] Other features and advantages of the present application will become clear through the following detailed description of the exemplary embodiments of the present application with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings incorporated in the specification and constituting a part of the specification illustrate embodiments of the present application and, together with the description, are used to explain the principles of the present application.

[0023] Figure 1 FIG. 1 is one of the schematic diagrams of a smart glasses without a reflective layer provided according to some specific embodiments.

[0024] Figure 2 FIG. 2 is one of the schematic diagrams of a smart glasses with a reflective layer provided according to some specific embodiments.

[0025] Figure 3 FIG. 3 is one of the schematic diagrams of a smart glasses without a reflective layer provided according to some specific embodiments.

[0026] Figure 4 FIG. 4 is one of the schematic diagrams of a smart glasses with a reflective layer provided according to some specific embodiments.

[0027] Figure 5Exploded view of an intelligent glasses without a reflective layer provided according to some specific embodiments.

[0028] Description of reference numerals:

[0029] 100, optical engine; 101, frame; 103, cover plate; 104, first adhesive layer; 105, light rays emitted by the optical engine; 106, optical waveguide layer; 107, first overflow light rays; 108, temple; 109, reflective layer; 110, second adhesive layer; 111, coupling grating; 115, first reflected light rays; 203, front cover of the frame; 205, second overflow light rays; 207, second reflected light rays. Detailed implementation manners

[0030] Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that: unless otherwise specifically stated, the relative arrangements, numerical expressions, and numerical values of the components and steps set forth in these embodiments do not limit the scope of the present application.

[0031] The following description of at least one exemplary embodiment is merely illustrative in nature and in no way serves as a limitation to the present application or its application or use.

[0032] Techniques, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be regarded as part of the specification.

[0033] In all the examples shown and discussed herein, any specific value should be construed as merely exemplary and not as a limitation. Accordingly, other examples of the exemplary embodiments may have different values.

[0034] It should be noted that: like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0035] As Figure 1 and Figure 3 shown, in the related design, the waveguide lens of the intelligent glasses is generally formed by laminating an optical waveguide layer and a cover plate layer with an adhesive. In order to reduce the weight, some waveguide lenses are provided with only one cover plate layer. However, this structure causes damage to the total reflection propagation of light when assembled with other structural components due to the lack of protection on the other side of the optical waveguide layer, resulting in losses of optical performance such as light efficiency.

[0036] For example, in one embodiment, referring to Figure 1 , an intelligent glasses is provided, where the optical waveguide layer 106 and the optical engine 100 are on the same side of the cover plate 103, and the cover plate 103 covers the first surface of the optical waveguide layer 106 ( Figure 1The upper surface of the middle optical waveguide layer), and the frame structure is bonded to the second surface of the optical waveguide layer 106 through the first adhesive layer 104 ( Figure 1 The lower surface of the middle optical waveguide layer). The light ray 105 emitted by the optical engine 100 is incident on the coupling grating 111 on the surface of the optical waveguide layer 106, and after diffraction, a first reflected light ray 115 is generated. The first reflected light ray 115 is incident on the first adhesive layer 104 after one or more total internal reflections. Since the refractive index of the first adhesive layer 104 > 1, it will destroy the total internal reflection condition formed by the optical waveguide layer 106 and air, resulting in some light rays overflowing to form a first overflow light ray 107. In addition, the first adhesive layer 104 has an absorption rate, which will also reduce the light efficiency.

[0037] In another embodiment, refer to Figure 3 , an intelligent glasses is provided. The optical waveguide layer 106 and the optical engine 100 are on the opposite sides of the cover plate 103, and the cover plate 103 covers the first surface of the optical waveguide layer 106 ( Figure 1 The lower surface of the middle optical waveguide layer), and the frame structure is bonded to the second surface of the optical waveguide layer 106 through the first adhesive layer 104 ( Figure 1 The upper surface of the middle optical waveguide layer). The light ray 105 emitted by the optical engine 100 is diffracted by the coupling grating 111 on the surface of the optical waveguide layer 106 to generate a second reflected light ray 207. After one or more total internal reflections, it is incident on the first adhesive layer 104. Since the refractive index of the first adhesive layer 104 > 1, it will destroy the total internal reflection condition formed by the optical waveguide layer 106 and air, resulting in some light rays overflowing to form a second overflow light ray 205. In addition, due to the absorption rate of the first adhesive layer 104, the light efficiency will also be reduced.

[0038] In this application, by providing a cover plate on the first surface of the middle optical waveguide layer of the lens, bonding the second surface to the frame structure through the first adhesive layer, and providing a reflective layer between the first adhesive layer and the optical waveguide layer, while protecting the optical waveguide layer, the optical performance of the intelligent glasses is ensured.

[0039] According to the first aspect of the application embodiment, as Figure 2 and Figure 4 shown, an intelligent glasses is provided, including a frame structure, a first adhesive layer 104 and a lens, wherein: the lens includes: an optical waveguide layer 106, a cover plate 103 and a reflective layer 109. The cover plate 103 covers the first surface of the optical waveguide layer 106; the first adhesive layer 104 is at least partially located in the contact area between the second surface of the optical waveguide layer 106 and the frame structure for fixing the lens and the frame structure, and the first surface and the second surface are opposite to each other; the reflective layer 109 is located between the first adhesive layer 104 and the optical waveguide layer 106, and the projection of the reflective layer 109 on the optical waveguide layer 106 covers the overlapping area between the light transmission area and the first adhesive layer 104.

[0040] Specifically, smart glasses such as augmented reality glasses (AR) and mixed reality glasses (XR) can integrate virtual content with the real world. They usually include a lens module that can display virtual images in front of the user's eyes. At the same time, the user can also view the external scene through the lens. According to different display schemes, the lens module can be a waveguide lens, a free-form surface, a Birdbath, etc.

[0041] The lens of the smart glasses provided by the present utility model adopts the type of waveguide lens, and a cover plate 103 for protecting the micro-nano structure on the optical waveguide layer 106 is only provided on one side of the optical waveguide layer 106 to reduce the structural mass. The other side of the optical waveguide layer 106 can be assembled with the frame structure through glue, and a reflective layer 109 is also provided between the glue and the optical waveguide layer 106 to avoid the optical effect loss caused by the glue to the propagation of the light projected by the optical engine 100, ensuring the optical effect and other performances of the smart glasses. Among them, the optical waveguide layer 106 is usually made of glass or resin material as the substrate and has the function of conducting light.

[0042] As Figure 5 shown, an exploded view of a smart glasses is provided, which includes a spectacle frame 101 for supporting the lens and temple arms 108 for supporting the spectacle frame 101. Among them, the lens includes an optical waveguide layer 106, a front cover 203 of the spectacle frame disposed on the front side of the optical waveguide layer 106, and a cover plate 103 located on the rear side of the optical waveguide layer 106. Optical engines 100 are also provided on the left and right sides of the spectacle frame 101 for emitting light beams. Among them, the spectacle frame 101 and the front cover 203 of the spectacle frame are usually bonded to the optical waveguide layer 106 through glue, resulting in the light beam projected by the optical engine 1001 onto the optical waveguide layer 106 being refracted by the glue and affecting the optical performance of the optical waveguide layer.

[0043] In this application, by adding a reflective layer 109 between the glue (the first glue layer 104) and the optical waveguide layer 106, the reflective layer 109 can avoid the optical effect loss caused by the glue to the propagation of the light projected by the optical machine 100, ensuring the optical effect and other performance of the smart glasses. In the above embodiment, the reflective layer 109 at least covers the overlapping area between the light transmission area of the optical waveguide layer 106 and the first glue layer 104. Among them, the light transmission area refers to the area on the optical waveguide layer 106 for light transmission, usually including the area where the coupling grating 111 is located, and the area of the optical waveguide layer 106 that the light passes through starting from the coupling grating 111. And the projection of the reflective layer 109 on the optical waveguide layer 106 covering the overlapping area between the light transmission area and the first glue layer 104 means that the projection of the reflective layer 109 on the optical waveguide layer 106 and the projection of the first glue layer 104 on the optical waveguide layer 106 are at least overlapped in the light transmission area, so as to ensure that the reflective layer 109 can completely block the light transmission to the first glue layer 104 in the light transmission area, avoiding the optical effect loss of the first glue layer 104 to the light and ensuring the optical performance of the optical waveguide layer 106.

[0044] As Figure 2 shown, in this embodiment, by setting the reflective layer 109 between the surface of the optical waveguide layer 106 and the frame structure, when the lens is attached to the frame structure, the reflective layer 109 is in direct contact with the first glue layer 104. Furthermore, the first reflected light 115 generated after the light 105 emitted by the optical machine 100 is diffracted by the coupling grating 111 will be reflected by the reflective layer 109 and will not contact the first glue layer 104, so the optical effect will not be lost.

[0045] As Figure 4 shown, in this embodiment, by setting the reflective layer 109 in the area where the surface of the optical waveguide layer 106 is bonded to the frame structure, when the lens is attached to the frame structure, the reflective layer 109 is in direct contact with the first glue layer 104. Furthermore, the first reflected light 115 generated after the light 105 emitted by the optical machine 100 is diffracted by the coupling grating 111 will be reflected by the reflective layer 109 and will not contact the first glue layer 104, so the optical effect will not be lost either.

[0046] As can be seen from the above embodiments, for the smart glasses provided by the present invention, a reflective layer 109 is provided between the optical waveguide layer 106 and the first adhesive layer 104 for bonding the frame structure, and the reflective layer 109 is disposed in the overlapping area between the projection coverage of the optical waveguide layer 106 and the light transmission area and the first adhesive layer 104, so that the reflected light generated after the light emitted by the optical engine 100 is diffracted by the coupling grating 111 can be reflected by the reflective layer 109, thus not contacting the first adhesive layer 104, avoiding the destruction of the conditions for total reflection of light caused by the first adhesive layer 104, and preventing some light from overflowing, avoiding the loss of light efficiency of the lens, and improving the optical performance of the smart glasses. Among them, the frame structure may be a spectacle frame 101 or a light-shielding member or other structural members for supporting the lens, and the present invention does not limit this.

[0047] Optionally, the reflective layer 109 is a metal reflective film or a dielectric reflective film, and the reflective layer 109 is provided as a single-layer structure or a multi-layer structure.

[0048] Specifically, in the smart glasses, the reflective layer 109 functions to reflect light, ensuring that the light emitted by the optical engine 100 and incident into the optical waveguide layer 106 through the coupling grating 111 can achieve total reflection within the optical waveguide layer 106, avoiding light efficiency loss. In practical applications, the reflective layer 109 can be made of a reflective film made of metal materials such as gold, silver, and aluminum. The metal reflective film can effectively reflect light, especially for light of certain specific wavelengths, the reflectivity can reach a relatively high level, and it can maintain a high reflectivity within a wide wavelength range, improving the adaptability of the reflective layer 109 to the reflection requirements of light of different wavelengths. In addition, the metal reflective film also has advantages such as heat resistance, light resistance, and simple preparation process.

[0049] In another embodiment, the reflective layer 109 can also use a dielectric reflective film, which can significantly increase the reflectivity at the air-glass interface through the multi-beam interference principle. By optimizing the film layer structure and material selection, the reflectivity can exceed 99.9%, which is much higher than other types of reflective films. Moreover, the dielectric reflective film not only has a high reflectivity but can also be used in a wide wavelength spectral region to meet the reflection requirements of light of different wavelengths. In addition, the dielectric reflective film also has good stability and wear resistance, can withstand continuous laser irradiation without being easily damaged, and is also easy to clean and maintain. With the continuous development of optical technology, the preparation process of the dielectric reflective film has been relatively mature, and can be realized through technologies such as electron beam evaporation and ion-assisted deposition, which can precisely control the thickness and reflectivity of the film layer, thereby ensuring that the performance of the reflective film meets the design requirements of the lens of the smart glasses.

[0050] Further, when forming the reflective layer 109 using the above-mentioned metal reflective film or dielectric reflective film, it can be achieved by using a single-layer or multi-layer reflective film layer. When the dielectric reflective film and the metal reflective film adopt a multi-layer reflective film layer design, the reflective layer 109 can have advantages such as higher reflectivity, compact structure, and good corrosion resistance. Moreover, the multi-layer dielectric reflective film has the property of a narrow bandwidth, usually within dozens of nanometers near the wavelength to be reflected. This characteristic makes the multi-layer dielectric reflective film very useful in application scenarios where precise control of the reflection wavelength is required. Additionally, by adjusting parameters such as the thickness, refractive index, and number of layers of the dielectric layer, precise control of the reflection spectrum can be achieved to meet the requirements of different application scenarios of the smart glasses.

[0051] Optionally, as Figure 2 and Figure 4 shown, the reflective layer 109 is deposited on the surface of the optical waveguide layer 106. The reflective layer 109 is disposed on the surface of the optical waveguide layer 106 by means of deposition, avoiding the introduction of a new adhesive layer during the process of setting the reflective layer 109, and further ensuring the optical efficiency performance of the lens.

[0052] Optionally, as Figures 1 to 4 shown, the smart glasses further include a second adhesive layer 110. The second adhesive layer 110 is disposed at the edge of the first surface of the optical waveguide layer 106, and the cover plate 103 is bonded to the optical waveguide layer 106 through the second adhesive layer 110.

[0053] Specifically, in this embodiment, the second adhesive layer 110 is disposed at the edge of the first surface of the optical waveguide layer 106, so that while realizing the bonding of the cover plate 103 and the optical waveguide layer 106, it can also avoid the second adhesive layer 110 from destroying the total reflection condition of the incident light and causing light leakage, further ensuring the optical efficiency performance of the lens. Among them, the setting of the cover plate 103 can protect the first surface of the optical waveguide layer 106.

[0054] Preferably, as Figures 1 to 4 shown, the projection of the bonding position of the second adhesive layer 110 and the cover plate 103 on the optical waveguide layer 106 is located outside the light transmission area, which can further avoid the influence of the second adhesive layer 110 on light transmission and improve the optical efficiency performance of the lens.

[0055] Optionally, as Figures 1 to 4 shown, it includes a lens frame 101 and a front cover 203 of the lens frame. A space for bearing the edge area of the lens is formed between the lens frame 101 and the front cover 203 of the lens frame. The edge area at least includes a part of the contact area between the lens and the frame structure, and the frame structure is the lens frame 101 or the front cover 203 of the lens frame.

[0056] Specifically, in this embodiment, the space formed between the lens frame 101 and the front cover 203 of the lens frame is used to carry the edge area of the lens, so that the lens can be carried and assembled on the spectacle frame. In different embodiments, the lens frame 101 and the front cover 203 of the lens frame can protect the first side or the second side of the optical waveguide layer 106, improving the service life of the smart glasses. Figures 1 to 4 The lens frame or the front cover structure of the lens frame in

[0057] Optionally, as Figures 1 to 2 shown, the frame structure is the lens frame 101, the optical waveguide layer 106 includes an input grating 111, and the input grating 111 is arranged on the first side of the optical waveguide layer 106; the smart glasses further include an optical engine 100, and the optical engine 100 is located on the side of the optical waveguide layer 106 away from the cover plate 103, and the light of the optical engine 100 is incident perpendicular to the second side of the optical waveguide layer 106.

[0058] Specifically, the optical engine 100 is used to emit the light of the image information in the smart glasses. The input grating 111 is usually arranged on the surface of the optical waveguide layer 106 to couple the light of the image information projected by the optical engine 100 into the optical waveguide layer 106. This light is totally reflected in the optical waveguide layer 106 and then expands and couples out from the output grating on the optical waveguide layer 106 to the human eye, achieving the purpose of augmented reality or mixed reality of the smart glasses.

[0059] In this embodiment, referring to Figures 1 to 2 , the optical engine 100 and the cover plate 103 are respectively located on different sides of the optical waveguide layer 106. The light of the image information projected by the optical engine 100 can be directly incident into the optical waveguide layer 106 perpendicular to the second side of the optical waveguide layer 106. Through the reflection of the reflection layer 109 on the opposite side, the light is totally reflected in the optical waveguide layer 106, thereby realizing the optical performance of the lens. Among them, the cover plate 103 can protect the side of the optical waveguide layer 106 away from the optical engine 100, and the lens frame 101, as a frame structure, can support the entire lens on the one hand, and can also form a certain protection for the side of the optical waveguide layer 106 close to the optical engine 100 on the other hand, achieving the purpose of reducing the mass of the smart glasses while ensuring the light effect performance of the smart glasses.

[0060] Optionally, as Figures 3 to 4 shown, the frame structure is the front cover 203 of the lens frame, the optical waveguide layer 106 includes an input grating 111, and the input grating 111 is arranged on the first side of the optical waveguide layer 106; the smart glasses further include an optical engine 100, and the optical engine 100 is located on the side of the optical waveguide layer 106 close to the cover plate 103, and the light of the optical engine 100 is incident perpendicular to the cover plate 103.

[0061] In this embodiment, referring to Figures 3 to 4, the optical engine 100 and the cover plate 103 are respectively located on the same side of the optical waveguide layer 106. After the light rays of the image information projected by the optical engine 100 pass through the cover plate 103, they can directly enter the optical waveguide layer 106 perpendicular to the second surface of the optical waveguide layer 106. Through the reflection of the reflection layer 109 on the opposite side, total internal reflection of the light rays is achieved in the optical waveguide layer 106, thereby realizing the optical performance of the lens. Among them, the cover plate 103 can protect the side of the optical waveguide layer 106 close to the optical engine 100. The front cover 203 of the lens frame, as a frame structure, can on the one hand support the entire lens, and on the other hand can also provide a certain degree of protection for the side of the optical waveguide layer 106 away from the optical engine 100, achieving the reduction of the mass of the smart glasses while ensuring the light effect performance of the smart glasses.

[0062] Optionally, the light transmission region includes the coupling grating 111 and the region of the optical waveguide layer 106 through which the light passes starting from the coupling grating 111. Among them, the light transmission region refers to the region on the optical waveguide layer 106 through which the light is transmitted. In this embodiment, the light rays emitted by the optical engine 100 enter the optical waveguide layer 106 from the coupling grating 111, and after multiple total internal reflections, they are emitted from a certain place (such as the coupling-out grating). Then the light transmission region includes the region where the coupling grating 111 is located and the region between the starting point of the coupling grating 111 and the position where the light rays exit the optical waveguide layer 106. The coverage area of the light reflection layer 106 at least includes the overlapping area of the light transmission region and the first adhesive layer 104, which is also to ensure that total internal reflection of the light rays can occur in the optical waveguide layer 106, avoid partial refraction of the light rays from the first adhesive layer 104 out of the optical waveguide layer 106, and ensure the optical performance.

[0063] Optionally, the reflection layer 109 is a total reflection layer 109. Among them, the setting of the total reflection layer 109 enables the image information projected by the optical engine 100 into the optical waveguide layer 106 to achieve a total reflection effect, minimizing the light loss, improving the clarity of the image information projected by the lens, and improving the optical effect of the smart glasses.

[0064] Although some specific embodiments of the present application have been described in detail by way of examples, those skilled in the art should understand that the above examples are only for illustration and not for limiting the scope of the present application. Those skilled in the art should understand that the above embodiments can be modified without departing from the scope and spirit of the present application. The scope of the present application is defined by the appended claims.

Claims

1. An intelligent glasses, comprising a frame structure, a first adhesive layer and a lens, wherein: The lens comprises: An optical waveguide layer, a cover plate and a reflective layer; The cover plate covers the first surface of the optical waveguide layer; The first adhesive layer is at least partially located in the contact area between the second surface of the optical waveguide layer and the frame structure, and is used to fix the lens and the frame structure, and the first surface and the second surface are opposite to each other; The reflective layer is located between the first adhesive layer and the optical waveguide layer, and the projection of the reflective layer on the optical waveguide layer covers the overlapping area between the light transmission area and the first adhesive layer.

2. The smart glasses according to claim 1, characterized in that The reflective layer is a metal reflective film or a dielectric reflective film, and the reflective layer is arranged as a single-layer structure or a multi-layer structure.

3. The smart glasses according to claim 1, characterized in that, The reflective layer is plated on the surface of the optical waveguide layer.

4. The smart glasses according to claim 1, characterized in that It further comprises a second adhesive layer, and the second adhesive layer is arranged at the edge of the first surface of the optical waveguide layer, and the cover plate is bonded to the optical waveguide layer through the second adhesive layer.

5. The smart glasses according to claim 4, characterized in that, The bonding position of the second adhesive layer and the cover plate is located outside the light transmission area in the projection on the optical waveguide layer.

6. The smart glasses according to claim 1, characterized in that, It comprises a spectacle frame and a front cover of the spectacle frame, and a space for carrying the edge area of the lens is formed between the spectacle frame and the front cover of the spectacle frame. The edge area at least includes a part of the contact area between the lens and the frame structure, and the frame structure is the spectacle frame or the front cover of the spectacle frame.

7. The smart glasses according to claim 1, characterized in that The frame structure is a spectacle frame, the optical waveguide layer comprises a coupling grating, and the coupling grating is arranged on the first surface of the optical waveguide layer; The intelligent glasses further comprise an optical engine, the optical engine is located on the side of the optical waveguide layer away from the cover plate, and the light of the optical engine is incident perpendicular to the second surface of the optical waveguide layer.

8. The smart glasses according to claim 1, characterized in that, The frame structure is a front cover of the spectacle frame, the optical waveguide layer comprises a coupling grating, and the coupling grating is arranged on the first surface of the optical waveguide layer; The intelligent glasses further comprise an optical engine, the optical engine is located on the side of the optical waveguide layer close to the cover plate, and the light of the optical engine is incident perpendicular to the cover plate.

9. The smart glasses according to claim 7 or 8, characterized in that, The light transmission area includes the coupling grating and the area of the optical waveguide layer that the light passes through starting from the coupling grating.

10. The smart glasses according to claim 1, characterized in that, The reflective layer is a total reflection layer.

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