Augmented reality lens and augmented reality device

Abstract

The present application discloses an augmented reality lens and an augmented reality device. The augmented reality lens comprises at least two waveguide layers and a connecting structure; the waveguide layers are spaced apart from each other and are arranged in parallel; a connecting structure is arranged between two adjacent waveguide layers and the connecting structure is fixed to the two adjacent waveguide layers; and when the waveguide layers deform, the connecting structure is used to at least keep the distance between light coupling-out regions of the two adjacent waveguide layers unchanged.

Description

Augmented reality lenses and augmented reality devices

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on November 3, 2023, with application number CN202311454305.5 and invention name “Augmented Reality Lenses and Augmented Reality Devices,” the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application belongs to the field of augmented reality technology, and specifically relates to an augmented reality lens and an augmented reality device. Background Art

[0003] The optical module of an augmented reality (AR) near-eye display device typically consists of two parts: an optical engine (or light engine) and an AR lens. The optical engine consists of an image source and a projection lens. The image source is used to generate the image to be displayed, and the projection lens projects the image displayed by the image source to infinity or a specified distance. AR lenses typically include an optical waveguide 1 and a protective sheet 2. As shown in Figure 1, the optical waveguide 1 can be a single layer (mostly used for monochrome display) or a multi-layered layer (mostly used for color display). The surface of the optical waveguide 1 includes an incoupling area (the gray circular area in Figure 1) and an outcoupling area (the gray rectangular area in Figure 1). Diffractive microstructures are provided in the incoupling and outcoupling areas to transmit the signal light emitted by the optical engine in a directionally directed manner to the human eye, forming the image to be displayed on the retina. The protective sheet 2 is used to protect the diffractive microstructures on the surface of the optical waveguide 1. Typically, the protective sheet 2 does not directly contact the optical waveguide 1 but is adhered and fixed to it via a closed ring adhesive 3, with a small air gap between the two. AR lenses have good transmittance to real-world ambient light. Through AR lenses, the human eye can see both real-world scenes and images projected by the optical machine. Resin diffraction optical waveguides have become the preferred option for optical waveguides in AR lenses due to their thin thickness, light weight, and good light transmittance.

[0004] Ideally, the multilayer waveguides should be as parallel as possible so that the propagation directions of the different colored light rays coupled from the outcoupling regions 4 of different waveguide layers 1 are consistent. As shown in Figure 2(a), after the different colored light rays are focused by the human eye, the resulting images completely overlap on the retina (the black cross pattern shown in Figure 2(a) is the result of the superposition of the three RGB color images emitted by different waveguide layers). However, resin materials are relatively flexible and easily bend and deform under the influence of external forces, air pressure, or temperature during daily use. In AR lenses with multilayer waveguides, the deformation of each waveguide layer 1 cannot be completely consistent. This results in inconsistent propagation angles of the light rays coupled from the outcoupling regions of the two waveguide layers 1, as shown in Figures 2(b) and 2(c). In this case, when the light rays are received by the human eye, they appear as misaligned RGB channel images on the retina. This means that the image displayed by the AR lens will be affected by the surface profile changes of the resin diffraction waveguides, resulting in color separation and ghosting.

[0005] Application Contents

[0006] The technical problem solved by this application is: how to avoid deformation of the waveguide layer in the augmented reality lens, which causes the coupled light rays from each waveguide layer to be non-parallel to each other, thereby causing color separation and ghosting.

[0007] The present application provides an augmented reality lens, which includes at least two waveguide layers and a connecting structure. The waveguide layers are spaced apart and arranged in parallel. The connecting structure is arranged between two adjacent waveguide layers and is fixed to the two adjacent waveguide layers respectively. When the waveguide layers are deformed, the connecting structure is used to at least maintain the spacing between the light outcoupling areas of the two adjacent waveguide layers unchanged.

[0008] Optionally, the connection structure is located in the light outcoupling regions of two adjacent waveguide layers and is respectively fixed to the surfaces of the two adjacent waveguide layers.

[0009] Optionally, the connection structure is located in the light coupling-in area, the total reflection area and the light coupling-out area of ​​the waveguide layer, and the connection structure is respectively fixed to the surfaces of two adjacent waveguide layers. When the waveguide layer is deformed, the connection structure is also used to maintain the distance between the two adjacent waveguide layers unchanged.

[0010] Optionally, the connection structure includes a plurality of support columns distributed at intervals, and two ends of each support column are respectively fixed to the surfaces of two adjacent waveguide layers.

[0011] Optionally, before and after the waveguide layer is deformed, a distance between the light outcoupling regions of two adjacent waveguide layers and / or a distance between two adjacent waveguide layers is equal to the thickness of the support column.

[0012] Optionally, the supporting column includes a transparent column and a transparent adhesive layer, and two surfaces of the transparent adhesive layer are respectively adhered to the end surface of the transparent column and the surface of the waveguide layer.

[0013] Optionally, the support column further includes a reflective layer, which is located between the transparent column and the transparent adhesive layer, and is used to reflect the light transmitted from the waveguide layer to the support column back to the waveguide layer.

[0014] Optionally, the augmented reality lens further includes a protective layer, each waveguide layer is located on the same side of the protective layer, and the protective layer is parallel to and spaced apart from the adjacent waveguide layer.

[0015] Optionally, a connecting structure is provided between the protective layer and the adjacent waveguide layer, and the connecting structure is fixed to the protective layer and the waveguide layer respectively. When the waveguide layer and / or the protective layer is deformed, the connecting structure is used to maintain the distance between the protective layer and the adjacent waveguide layer unchanged.

[0016] The present application also discloses an augmented reality device, which includes the above-mentioned augmented reality lens.

[0017] The augmented reality lens and augmented reality device disclosed in this application have the following technical effects:

[0018] The waveguide layers are connected together through a connecting structure. When the augmented reality lens is deformed, the coupled light from each waveguide layer can be kept parallel to each other, thereby avoiding color separation and ghosting, and ensuring the display effect of the augmented reality device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] FIG1 is a schematic structural diagram of an AR lens in the prior art;

[0020] FIG2 is a schematic diagram of outcoupling light and imaging of an AR lens in different deformation states in the prior art;

[0021] FIG3 is a cross-sectional schematic diagram of an augmented reality lens according to Example 1 of the present application, in which a connection structure is provided only between waveguide layers;

[0022] FIG4 is a schematic cross-sectional view of the augmented reality lens in FIG3 when deformed;

[0023] FIG5 is a schematic cross-sectional view of the augmented reality lens in FIG3 when another deformation occurs;

[0024] FIG6 is a cross-sectional schematic diagram of the augmented reality lens according to the first embodiment of the present application, showing connection structures provided between waveguide layers and between the waveguide layer and the protective layer;

[0025] FIG7 is a schematic cross-sectional view of the augmented reality lens in FIG6 when deformed;

[0026] FIG8 is a schematic diagram of a support column according to the first embodiment of the present application;

[0027] FIG9 is a schematic diagram of the fixed connection between the support column and the waveguide layer according to the first embodiment of the present application;

[0028] FIG10 is a schematic diagram of the preparation of the support column and the annular adhesive according to the first embodiment of the present application;

[0029] FIG11 is a schematic diagram of the assembly of the various sheets, the support column, and the annular adhesive of Example 1 of the present application;

[0030] FIG12 is a schematic diagram of the array distribution of the support columns of the first embodiment of the present application.

[0031] FIG13 is a schematic diagram of the concentric circle distribution of the support columns of Example 1 of the present application;

[0032] FIG14 is a schematic diagram of equidistant distribution of multiple support columns according to the first embodiment of the present application;

[0033] The correspondence between the reference numerals and component names is as follows:

[0034] 10 - waveguide layer, 11 - optical coupling area, 20 - connection structure, 21 - support column, 211 - transparent column, 212 - transparent adhesive layer, 213 - reflective layer, 30 - protective layer, 40 - ring-shaped adhesive, 50 - release film. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solutions and advantages of this application more clearly understood, the following further describes this application in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0036] Before describing the various embodiments of the present application in detail, the technical concept of the present application is briefly described. For AR lenses with multiple waveguide layers, the multiple waveguide layers are generally parallel to each other to ensure that the light coupled out of each waveguide layer is parallel to each other, preventing color separation and ghosting. However, current AR lenses are suitable for various scenarios and face different external environments. For example, AR lenses are squeezed and deformed, temperature and humidity changes, or residual stress causes the waveguide layers to deform, making it impossible for the waveguide layers to remain parallel to each other. To this end, the augmented reality lens provided by the present application has a connecting structure between the waveguide layers. The connecting structure connects the adjacent waveguide layers into one. When one waveguide layer deforms, the connecting structure transfers the deformation to the other waveguide layer to the same extent or prevents the two waveguide layers from deforming. In this way, the spacing between the adjacent waveguide layers remains unchanged, that is, the waveguide layers remain parallel, thereby ensuring that the light coupled out of each waveguide layer is parallel to each other. The specific structure of the augmented reality lens of the present application is described below in conjunction with more embodiments.

[0037] Specifically, as shown in Figures 3, 4 and 5, the augmented reality lens of the first embodiment includes at least two waveguide layers 10 and a connecting structure 20. The waveguide layers 10 are spaced apart and arranged in parallel. The connecting structure 20 is arranged between two adjacent waveguide layers 10 and the connecting structure 20 is respectively fixed to the two adjacent waveguide layers 10. When the waveguide layer 10 is deformed, the connecting structure 20 is used to at least maintain the spacing between the light outcoupling areas 11 of the two adjacent waveguide layers 10 unchanged. Since the waveguide layers 10 are arranged in parallel, the spacing between the light outcoupling areas 11 remains unchanged after deformation, and the light outcoupling areas 11 remain parallel, thereby ensuring that the outgoing light rays of each light outcoupling area 11 are parallel.

[0038] For example, the number of waveguide layers 10 can be multiple, and the description here takes two waveguide layers 10 as an example. Two adjacent waveguide layers 10 are adhered, fixed, and sealed by an annular adhesive 40, and a sealed air layer is formed between the two adjacent waveguide layers 10.

[0039] In one embodiment, the connecting structure 20 is located in the light outcoupling regions 11 of two adjacent waveguide layers 10 and is respectively fixed to the surfaces of the two adjacent waveguide layers 10. The light outcoupling regions 11 of the two adjacent waveguide layers 10 can be connected into one piece by the connecting structure 20. When the waveguide layer 10 is deformed, the connecting structure 20 can prevent the light outcoupling regions 11 of the two adjacent waveguide layers 10 from approaching or moving away from each other. Even if the waveguide layer 10 undergoes a large deformation, the light outcoupling regions 11 of the two adjacent waveguide layers 10 can produce the same deformation due to the transmission effect of the connecting structure 20, thereby keeping the light outcoupling regions 11 of the two adjacent waveguide layers 10 parallel to each other. That is, the relative spacing between the light outcoupling regions 11 of the two adjacent waveguide layers 10 remains the same, and the outgoing light rays of the light outcoupling regions 11 of the two adjacent waveguide layers 10 can still remain parallel.

[0040] In another embodiment, the connecting structures 20 are located in the light incoupling region, total reflection region, and light outcoupling region 11 of the waveguide layer 10. The connecting structures 20 are respectively fixed to the surfaces of two adjacent waveguide layers 10. When the waveguide layer 10 deforms, the connecting structures 20 also serve to maintain the spacing between the two adjacent waveguide layers 10. Distributing the connecting structures 20 throughout the waveguide layer allows the two adjacent waveguide layers 10 to be connected as one. This not only maintains the parallelism between the two adjacent waveguide layers 10 and the parallelism between the light outcoupling regions 11 of the two adjacent waveguide layers 10, but also allows the two adjacent waveguide layers 10 to withstand greater external forces without deformation, thereby enhancing the strength of the waveguide layers 10. For example, when one waveguide layer 10 is subjected to a small external force and is about to deform, the connecting structures 20 constrain it from actually deforming due to the constraint of the other waveguide layer 10, thereby maintaining the parallelism between the two adjacent waveguide layers 10. When one of the waveguide layers 10 is subjected to a large external force and is about to undergo a large deformation, the force can be converted into a common smaller deformation of the two adjacent waveguide layers 10 through the transmission effect of the connection structure 20 and the constraint of the other waveguide layer 10, while the two adjacent waveguide layers 10 are kept parallel to each other.

[0041] Furthermore, as shown in Figures 6 and 7, the augmented reality lens also includes a protective layer 30. Each waveguide layer 10 is located on the same side of the protective layer 30, and the protective layer 30 is parallel to and spaced apart from adjacent waveguide layers 10. The protective layer 30 and adjacent waveguide layers 10 can be adhered, fixed, and sealed using an annular adhesive 40. Furthermore, a connecting structure 20 is provided between the protective layer 30 and adjacent waveguide layers 10. The connecting structure 20 is fixed to the protective layer 30 and waveguide layer 10, respectively. When the waveguide layer 10 and / or the protective layer 30 deforms, the connecting structure 20 is used to maintain the spacing between the protective layer 10 and the adjacent waveguide layer 10 unchanged. By integrating the protective layer 30 and each waveguide layer 10 through the connecting structure 20, the deformation resistance of the augmented reality lens can be further enhanced.

[0042] For example, the protective layer 20 can be either an outer protective layer or an inner protective layer. When the protective layer 20 is an outer protective layer, each waveguide layer 10 is located on the inner side of the protective layer 20, where the inner side is the side of the protective layer 20 that is closer to the optical engine and also closer to the user, so that the waveguide layers are protected by the protective layer 20. When the protective layer 20 is an inner protective layer, each waveguide layer 10 is located on the outer side of the protective layer 20, where the outer side is the side of the protective layer 20 that is farther from the optical engine and also farther from the user, so that the waveguide layers 10 are protected by the protective layer 20.

[0043] Specifically, the connection structure 20 includes a plurality of support columns 21 spaced apart from each other, with both ends of each support column 21 fixed to the surfaces of two adjacent waveguide layers 10. In one embodiment, the plurality of support columns 21 may be concentrated in the light outcoupling regions 11 of two adjacent waveguide layers 10, thereby connecting the light outcoupling regions 11 of the two adjacent waveguide layers 10 as a whole. In another embodiment, the plurality of support columns 21 are distributed across the entire surface of the waveguide layer 10, that is, the plurality of support columns 21 are distributed in the light incoupling region, the total reflection region, and the light outcoupling region 11 of the waveguide layer 10, thereby connecting the two adjacent waveguide layers 10 as a whole.

[0044] Furthermore, before and after the waveguide layer 10 is deformed, the spacing between the light outcoupling regions 11 of two adjacent waveguide layers 10 and / or the spacing between two adjacent waveguide layers 10 is equal to the thickness of the support column 21. For example, the support column 21 is made of a material with relatively high rigidity. When stretched or squeezed, the support column 21 does not deform or does not deform significantly, thereby maintaining the spacing between the two waveguide layers 10. It should be noted that the spacing between the two waveguide layers 10 remains constant, not theoretically absolutely constant, but rather essentially constant, with negligible variation. In essence, the degree of variation in the spacing between the two waveguide layers 10 depends on the degree of deformation of the support column 21 located between the two waveguide layers 10. When the support column 21 is made of a material with relatively high rigidity, the degree of deformation of the support column 21 when stretched or squeezed is negligible, and in this case, the spacing between the two waveguide layers 10 can be considered unchanged.

[0045] Furthermore, as shown in Figures 8 and 9, the support column 21 includes a transparent column 211 and a transparent adhesive layer 212. The two sides of the transparent adhesive layer 212 are respectively adhered to the end face of the transparent column 211 and the surface of the waveguide layer 10, thereby securing the support column 21 to the waveguide layer 10. The transparent adhesive layer 212 can be made of transparent optical adhesive, and the transparent column 211 can be made of a material with high rigidity and good light transmittance, such as glass, titanium dioxide, or a high molecular polymer. The transparent column 211 is preferably cylindrical, with a height ranging from 10 μm to 100 μm and a diameter ranging from 10 μm to 100 μm.

[0046] The support column 21 also includes a reflective layer 213, located between the transparent column 211 and the transparent adhesive layer 212. The reflective layer 213 is used to reflect light transmitted from the waveguide layer 10 to the support column 21 back to the waveguide layer 10. The reflective layer 213 prevents light from one waveguide layer 10 from passing through the support column 21 to an adjacent waveguide layer 10, thereby affecting imaging. It also reduces light loss in the waveguide layer 10. The reflective layer 213 can be a silver or aluminum coating, or an anti-reflection coating.

[0047] Furthermore, the support columns 21 of the first embodiment can be manufactured together with the annular adhesive 40. As shown in Figure 10, first, multiple support columns 21 and annular adhesive 40 are manufactured through a laser cutting process or a stamping process and stored on a release film 50. The support columns 21 and the annular adhesive 40 have the same thickness. As shown in Figure 11, one side of the multiple support columns 21 and the annular adhesive 40 is then adhered to the waveguide layer 10 or the protective layer 20. Finally, the release film is removed, and another layer of waveguide layer 10 or protective layer 20 is adhered to the other side of the support columns 21 and the annular adhesive 40, completing the bonding of adjacent layers within the augmented reality lens.

[0048] Among them, there are various arrangements of the multiple support cylinders 21. In one embodiment, as shown in FIG12 , the multiple support cylinders 21 are distributed in an array, and the row spacing of the array distribution is equal to the column spacing. In another embodiment, as shown in FIG13 , the multiple support cylinders 21 are distributed in concentric circles, and the support cylinders 21 on the same circle are distributed at equal intervals. The number of concentric circles can be set according to actual needs. For example, the radius difference between each two adjacent concentric circles is the same. For example, along the direction from the center of the circle outward, the radius difference between the first circle and the second circle is equal to the radius difference between the second circle and the third circle, and so on, so that the uniform distribution of the support cylinders 21 can be achieved. In other embodiments, denser support cylinders 21 can be set in the area close to the center of the circle, and sparser support cylinders 21 can be set in the area away from the center of the circle.

[0049] Furthermore, in another embodiment, as shown in FIG14 , a plurality of support columns 21 are distributed in multiple rows, and the support columns 21 located in odd rows are distributed in a first array, as shown by the solid points in FIG14 , and the support columns 21 located in even rows are distributed in a second array, as shown by the hollow points in FIG14 , wherein the row spacing of the first array distribution is equal to the row spacing of the second array distribution, the column spacing of the first array distribution is equal to the column spacing of the second array distribution, and the row spacing of the first array distribution is equal to the column spacing of the first array distribution. times, the first row of support columns 21 of the second array distribution is located between the first row of support columns 21 and the second row of support columns 21 of the first array distribution, and the first column of support columns 21 of the second array distribution is located between the first column of support columns 21 and the second column of support columns 21 of the first array distribution. Similarly, the second row of support columns 21 of the second array distribution is located between the second row of support columns 21 and the third row of support columns 21 of the first array distribution, and the second column of support columns 21 of the second array distribution is located between the second column of support columns 21 and the third column of support columns 21 of the first array distribution. Under this distribution method, multiple support columns 21 are periodically and densely arranged in an equilateral triangle, which can ensure that the distance between any adjacent support columns 21 is equal, which also means that the ability of each position of the waveguide layer 10 and the protective layer 20 to resist deformation is the same.

[0050] This second embodiment also discloses an augmented reality device, which includes the augmented reality lens of the first embodiment. The augmented reality device can be applied to different scenarios. The waveguide layer is connected to the waveguide layer through a connecting structure. When the augmented reality lens is deformed, the coupled light rays of each waveguide layer can be kept parallel to each other, thereby avoiding color separation and ghosting, and ensuring the display effect of the augmented reality device.

[0051] The augmented reality device can be an augmented reality device, such as augmented reality glasses. In the example of augmented reality glasses, the augmented reality device can be configured to transfer data to an external processing device and receive data from the external processing device via a signal connection, and the signal connection can be a wired connection, a wireless connection, or a combination thereof. However, in other cases, the augmented reality device can be used as a standalone device, i.e., data processing is performed on the augmented reality device itself. The signal connection can be configured to carry any kind of data, such as image data (e.g., still images and / or full motion video, including 2D and 3D images), audio, multimedia, voice, and / or any other type of data. The external processing device can be, for example, a game console, a personal computer, a tablet computer, a smart phone, or other type of processing device. The signal connection can be, for example, a universal serial bus (USB) connection, a Wi-Fi connection, a Bluetooth or Bluetooth low energy (BLE) connection, an Ethernet connection, a cable connection, a DSL connection, a cellular connection (e.g., 3G, LTE / 4G, or 5G), etc., or a combination thereof. Additionally, the external processing device may communicate with one or more other external processing devices via a network, which may be or include, for example, a local area network (LAN), a wide area network (WAN), an intranet, a metropolitan area network (MAN), the global Internet, or a combination thereof.

[0052] It should be noted that it is understandable that a complete augmented reality glasses should also have other necessary basic components, but the other components are not the focus of this embodiment, so they are not shown in the drawings and are not described in detail in the specification, and these components are well-known technologies to those skilled in the art.

[0053] The above describes in detail the specific implementation methods of the present application. Although some embodiments have been shown and described, those skilled in the art should understand that these embodiments can be modified and improved without departing from the principles and spirit of the present application, the scope of which is defined by the claims and their equivalents. These modifications and improvements should also be within the scope of protection of the present application.

Claims

1. An augmented reality lens, comprising at least two waveguide layers and a connection structure, wherein the waveguide layers are spaced apart and arranged in parallel, the connection structure is arranged between two adjacent waveguide layers and the connection structure is respectively fixed to the two adjacent waveguide layers, and when the waveguide layer is deformed, the connection structure is used to at least keep the spacing between the light outcoupling areas of the two adjacent waveguide layers unchanged.

2. The augmented reality lens according to claim 1, wherein: The connection structure is located in the light outcoupling regions of two adjacent waveguide layers and is respectively fixed on the surfaces of two adjacent waveguide layers.

3. The augmented reality lens according to claim 1, wherein: The connection structure is located in the light coupling-in area, the total reflection area and the light coupling-out area of ​​the waveguide layer. The connection structure is respectively fixed to the surfaces of two adjacent waveguide layers. When the waveguide layer is deformed, the connection structure is also used to keep the distance between the two adjacent waveguide layers unchanged.

4. The augmented reality lens according to claim 2 or 3, wherein: The connection structure comprises a plurality of support columns distributed at intervals, and two ends of each support column are respectively fixed to the surfaces of two adjacent waveguide layers.

5. The augmented reality lens according to claim 4, wherein: Before and after the waveguide layer is deformed, the distance between the light outcoupling regions of two adjacent waveguide layers and / or the distance between two adjacent waveguide layers are equal to the thickness of the support column.

6. The augmented reality lens according to claim 4, wherein: The supporting column body comprises a transparent column and a transparent adhesive layer, and two surfaces of the transparent adhesive layer are respectively adhered to the end surface of the transparent column and the surface of the waveguide layer.

7. The augmented reality lens according to claim 6, wherein: The supporting column further comprises a reflecting layer, wherein the reflecting layer is located between the transparent column and the transparent adhesive layer, and the reflecting layer is used for reflecting the light transmitted from the waveguide layer to the supporting column to the waveguide layer.

8. The augmented reality lens according to claim 4, wherein: The plurality of support columns are distributed in an array.

9. The augmented reality lens according to claim 4, wherein: The plurality of support columns are distributed in concentric circles.

10. The augmented reality lens according to claim 9, wherein: The support columns on the same circle are distributed at equal intervals.

11. The augmented reality lens according to claim 4, wherein: The plurality of support columns are distributed in multiple rows.

12. The augmented reality lens according to claim 11, wherein: The support columns located in odd rows are distributed in a first array, and the support columns located in even rows are distributed in a second array. The row spacing of the first array is equal to the row spacing of the second array, and the column spacing of the first array is equal to the column spacing of the second array.

13. The augmented reality lens according to claim 12, wherein: The row spacing of the first array distribution is equal to the column spacing of the first array distribution. times.

14. The augmented reality lens according to claim 12, wherein: The support columns in the first row of the second array distribution are located between the support columns in the first row and the support columns in the second row of the first array distribution, and the support columns in the first column of the second array distribution are located between the support columns in the first column and the support columns in the second column of the first array distribution; The support columns in the second row of the second array distribution are located between the support columns in the second row and the support columns in the third row of the first array distribution, and the support columns in the second column of the second array distribution are located between the support columns in the second column and the support columns in the third column of the first array distribution.

15. The augmented reality lens according to claim 11, wherein: The plurality of support columns are periodically and closely arranged in the form of equilateral triangles.

16. The augmented reality lens of claim 1, wherein: The augmented reality lens further includes a protective layer, each waveguide layer is located on the same side of the protective layer, and the protective layer is parallel to and spaced from the adjacent waveguide layers.

17. The augmented reality lens according to claim 16, wherein: A connecting structure is provided between the protective layer and the adjacent waveguide layer, and the connecting structure is respectively fixed to the protective layer and the waveguide layer. When the waveguide layer and / or the protective layer is deformed, the connecting structure is used to keep the distance between the protective layer and the adjacent waveguide layer unchanged.

18. An augmented reality device, wherein: The augmented reality device comprises the augmented reality lens according to any one of claims 1 to 17.

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