Augmented reality eyeglass lens and method of making and augmented reality eyeglass

Abstract

The application relates to an augmented reality spectacle lens and a preparation method thereof and an augmented reality spectacle, and the augmented reality spectacle lens comprises a first cover plate, a waveguide sheet, a first sealing glue arranged between the first cover plate and the waveguide sheet and used for defining a first air gap together with the first cover plate and the waveguide sheet, an electrochromic device arranged on a surface of one side of the first cover plate, and a barrier layer located on the same side of the first cover plate as the electrochromic device and covering the electrochromic device, wherein the barrier layer comprises a dielectric organic layer and / or a dielectric inorganic layer arranged in a stack. In the augmented reality spectacle lens, the dielectric organic layer and / or the dielectric inorganic layer are used as the barrier layer, the barrier layer has good water and oxygen barrier properties and low mechanical damage performance, the electrochromic device has good use performance, the thickness of the barrier layer is relatively small, the weight of the barrier layer is relatively light, and thus the augmented reality spectacle provided with the electrochromic device can be effectively thinned.

Description

Technical Field

[0001] This application relates to the field of augmented reality technology, specifically to augmented reality eyeglass lenses, their manufacturing methods, and augmented reality glasses. Background Technology

[0002] As is well known, augmented reality (AR) overlays displayed images onto the real world as the human eye would normally see. In bright sunlight outdoors, or when needing to carefully view a displayed image, users desire a prominent image with minimal interference from the real world. A common method is to add a photochromic device in front of the combiner, reducing the light transmittance of the real world in these situations, thus highlighting the displayed image. A major technological contradiction in augmented reality glasses is that more functionality is always better, while lighter weight and thinner size are preferable—these two are mutually exclusive. Electrochromic technology (EC) is a crucial function of augmented reality glasses, but integrating traditional electrochromic devices into augmented reality glasses significantly increases weight and overall thickness.

[0003] Therefore, reducing the proportion of electrochromic devices in the weight and thickness of augmented reality glasses is the direction of evolution for ECs used in augmented reality. Summary of the Invention

[0004] This invention aims to at least partially solve one of the technical problems in related technologies. To this end, this invention proposes an augmented reality eyeglass lens with an electrochromic device that is thin and lightweight, a method for its fabrication, and augmented reality glasses.

[0005] In a first aspect, this application provides an augmented reality (AR) eyeglass lens. According to an embodiment of this application, the AR eyeglass lens includes: a first cover plate; a waveguide sheet; a first sealant disposed between the first cover plate and the waveguide sheet, defining a first air gap together with the first cover plate and the waveguide sheet; an electrochromic device disposed on a surface of one side of the first cover plate; and a barrier layer located on the same side of the first cover plate, covering the electrochromic device. The barrier layer includes a stacked dielectric organic layer and / or a dielectric inorganic layer. This AR eyeglass lens uses a dielectric organic layer and / or a dielectric inorganic layer as a barrier layer, achieving good water and oxygen barrier properties and reducing mechanical damage, ensuring good performance of the electrochromic device, while also having a thinner thickness and lighter weight. This allows the AR eyeglasses with the electrochromic device to be effectively made thinner and lighter.

[0006] According to an embodiment of this application, the thickness of the barrier layer is 0.1 μm to 20 μm.

[0007] According to an embodiment of this application, the dielectric inorganic layer is disposed between the electrochromic device and the dielectric organic layer.

[0008] According to an embodiment of this application, the barrier layer includes a plurality of dielectric organic layers and a plurality of dielectric inorganic layers stacked alternately.

[0009] According to embodiments of this application, the barrier layer satisfies at least one of the following conditions:

[0010] The water vapor permeability of the barrier layer is less than or equal to 5 × 10⁻⁶. -2 g / mm 2 day;

[0011] The oxygen permeability of the barrier layer is less than or equal to 0.5 g / mm². 2 day.

[0012] According to embodiments of this application, the material of the dielectric inorganic layer includes at least one of Al2O3, SiO2, Si3N4, TiO2, ZrO2, Nb2O5, and diamond-like carbon (DLC).

[0013] According to embodiments of this application, the dielectric organic layer is made of at least one of alkylsiloxane polymers, polyacrylic acid, poly(p-xylene), polytetrafluoroethylene, polyvinylidene fluoride, and polyvinyl butyral.

[0014] According to an embodiment of this application, the augmented reality glasses lens further includes: a second cover plate disposed on the side of the waveguide sheet away from the first cover plate; and a second sealant disposed between the second cover plate and the waveguide sheet, which together with the second cover plate and the waveguide sheet define a second air gap.

[0015] According to embodiments of this application, the materials of the first cover plate and the second cover plate each independently include at least one of glass and resin.

[0016] According to an embodiment of this application, the first cover plate and the second cover plate each have a predetermined refractive power independently.

[0017] According to an embodiment of this application, the first cover plate is located on the distal eye side, and the second cover plate is located on the proximal eye side.

[0018] A second aspect of this application provides a method for manufacturing the aforementioned augmented reality eyeglass lens. According to an embodiment of this application, the method includes: forming an electrochromic device on one side surface of a first cover plate; forming a barrier layer on the side of the electrochromic device away from the first cover plate; and using a first sealant to frame a waveguide sheet and the first cover plate, such that the first sealant, the waveguide sheet, and the first cover plate together define a first air gap. This method is simple, convenient, and easy to implement, and the resulting augmented reality eyeglass lens can be made thin and lightweight while possessing electrochromic functionality.

[0019] According to an embodiment of this application, the formation of the barrier layer includes: forming a dielectric inorganic layer using at least one of magnetron sputtering, chemical vapor deposition, in-situ deposition, and ion beam deposition; and forming a dielectric organic layer using at least one of plasma polymerization, plasma-enhanced chemical vapor deposition, flash evaporation, inkjet printing, and electrofluid printing.

[0020] According to an embodiment of this application, the method further includes: attaching the second cover plate to the waveguide frame using a second sealant.

[0021] A third aspect of this application provides augmented reality glasses. According to embodiments of this application, the augmented reality glasses include the aforementioned augmented reality lenses. These glasses achieve a thin and lightweight design while possessing electrochromic functionality. Attached Figure Description

[0022] Figure 1 This is a cross-sectional structural diagram of an augmented reality glasses lens according to an embodiment of this application.

[0023] Figure 2 This is a cross-sectional structural diagram of an augmented reality glasses lens according to another embodiment of this application.

[0024] Figure 3 This is a cross-sectional structural diagram of an augmented reality glasses lens according to another embodiment of this application.

[0025] Figure 4 This is a cross-sectional structural diagram of an augmented reality glasses lens according to another embodiment of this application.

[0026] Figure 5 This is a schematic diagram of the planar structure of an augmented reality glasses lens according to another embodiment of this application.

[0027] Figure 6 This is a cross-sectional structural diagram of an augmented reality glasses lens according to another embodiment of this application.

[0028] Figure 7 This is a cross-sectional structural diagram of an augmented reality glasses lens according to another embodiment of this application. Detailed Implementation

[0029] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0030] In a first aspect, this application provides an augmented reality glasses lens. According to an embodiment of this application, referring to... Figure 1 and Figure 2 The augmented reality glasses lens includes: a first cover plate 10; a waveguide sheet 20; a first sealant 30, the first sealant 30 being disposed between the first cover plate 10 and the waveguide sheet 20, and together with the first cover plate 10 and the waveguide sheet 20 defining a first air gap 100; an electrochromic device 40, the electrochromic device 40 being disposed on the surface of the first cover plate 10 facing the waveguide sheet 20; and a barrier layer 50, the barrier layer 50 being disposed on the side of the electrochromic device 40 near the waveguide sheet 20, and covering the electrochromic device 40, the barrier layer 50 including a dielectric organic layer 51 and a dielectric inorganic layer 52 stacked together. The augmented reality glasses lens uses a dielectric organic layer and a dielectric inorganic layer as a barrier layer. It has good water and oxygen barrier properties and reduces mechanical damage, so as to ensure the good performance of the electrochromic device. At the same time, it has a thinner thickness and lighter weight, thus enabling the augmented reality glasses with electrochromic device to be effectively made thinner and lighter.

[0031] In this article, the dielectric organic layer refers to a dielectric layer formed of organic materials; the dielectric inorganic layer refers to a dielectric layer formed of inorganic materials; and the dielectric layer refers to an optically transparent and non-conductive film layer.

[0032] According to embodiments of this application, the thickness of the barrier layer is 0.1 μm to 20 μm, specifically such as 0.1 μm, 0.5 μm, 1 μm, 2 μm, 3 μm, 4 μm, 5 μm, 6 μm, 7 μm, 8 μm, 9 μm, 10 μm, 11 μm, 12 μm, 13 μm, 14 μm, 15 μm, 16 μm, 17 μm, 18 μm, 19 μm, and 20 μm. Within the above thickness range, the barrier layer has good water and oxygen barrier properties, which can effectively reduce the possibility of electrochromic devices failing due to water and oxygen degradation in the environment and external mechanical contact. This results in better performance of the electrochromic device while the augmented reality glasses lens has a thinner thickness and lighter weight.

[0033] According to embodiments of this application, the thickness of the dielectric inorganic layer 52 is 10nm to 400nm, specifically 10nm, 50nm, 100nm, 150nm, 200nm, 250nm, 300nm, 350nm, 400nm, etc.; the thickness of the dielectric organic layer 51 can be 20nm, 500nm, 1μm, 2μm, 3μm, 4μm, 5μm, 6μm, 7μm, 8μm, 9μm, 10μm, etc. Within the above thickness range, it can have good water and oxygen barrier properties, which can effectively reduce the possibility of electrochromic devices failing due to water and oxygen degradation in the environment and external mechanical contact.

[0034] According to the embodiments of this application, referring to Figure 2 The dielectric inorganic layer 52 is disposed between the electrochromic device 40 and the dielectric organic layer 51. This arrangement further enhances the water and oxygen barrier properties of the barrier layer. Specifically, even though the theoretical water and oxygen barrier properties of the dielectric inorganic layer are sufficient to protect the electrochromic device, when the surface of the nanometer-thick dielectric inorganic layer is exposed to the environment, it is inevitably susceptible to erosion and damage from post-processing, temperature and humidity, and foreign matter in the air. Furthermore, when the inorganic layer is formed directly on the surface, the release of internal stress can worsen its local density and adhesion, preventing it from maintaining its initial excellent performance. Therefore, at least one dielectric organic layer can be placed on the surface of the dielectric inorganic layer to balance the stress on the dielectric inorganic layer and isolate it from direct damage caused by external post-processing, temperature and humidity, and foreign matter.

[0035] According to embodiments of this application, the number of dielectric inorganic layers and dielectric organic layers in the barrier layer can each be one or more independently. For example, there can be multiple dielectric inorganic layers and one dielectric organic layer; or there can be one dielectric inorganic layer and multiple dielectric organic layers; or there can be multiple dielectric inorganic layers and multiple dielectric organic layers. In some specific embodiments, the barrier layer includes multiple dielectric organic layers and multiple dielectric inorganic layers stacked alternately. This arrangement has the following advantages: First, the surface of the dielectric organic layer is relatively flat, and forming a dielectric inorganic layer on its surface makes the dielectric inorganic layer film formation smoother with fewer defects, preventing the dielectric inorganic layer from being affected by defects in the electrochromic device. Second, each dielectric inorganic layer is not affected by defects in the layer below it, and the defects in each dielectric inorganic layer are randomly distributed, making the path of water and oxygen through the barrier layer more tortuous, resulting in a higher water and oxygen barrier rate. This further enhances the barrier layer's ability to block water and oxygen, while also increasing the likelihood of mechanical damage to the electrochromic device from external mechanical contact, thereby improving the performance stability and lifespan of the electrochromic device.

[0036] According to an embodiment of this application, the water vapor permeability of the barrier layer is less than or equal to 5 × 10⁻⁶. -2 g / mm 2 Specifically, the water vapor permeability of the barrier layer can be 1×10⁻⁶. -2 g / mm 2 day; 5×10 -3 g / mm 2 day; 1×10 -3 g / mm 2 day; 5×10 -4 g / mm 2 day; 1×10 -4 g / mm 2 day; 5×10 -5 g / mm 2 day; 1×10 -5 g / mm 2 day; 5×10 -6 g / mm 2 day, etc.

[0037] In this article, water vapor transmission rate (WVTR) refers to the amount of water vapor allowed to pass through a unit area of ​​barrier layer per unit time under specific temperature and relative humidity conditions. It can be tested using the ASTM F1249 standard or the calcium test method. Specifically, in this article, the water vapor transmission rate is measured by depositing the barrier layer separately onto a plastic film and then testing it using ASTM F1249 standard equipment.

[0038] According to an embodiment of this application, the oxygen permeability of the barrier layer is less than or equal to 0.5 g / mm². 2 Specifically, the oxygen permeability of the barrier layer can be 0.5 g / mm². 2 day, 0.45g / mm 2 day, 0.4g / mm 2 day, 0.35g / mm 2 day, 0.3g / mm 2 day, 0.25g / mm 2 day, 0.2g / mm 2 day, 0.15g / mm 2 day, 0.1g / mm 2 day, 0.05g / mm 2 day, etc.

[0039] In this article, oxygen transmission rate (OTR) refers to the amount of oxygen allowed to pass through a unit area of ​​barrier layer per unit time under specific temperature and relative humidity conditions. It can be tested according to the ASTM D3985 standard. Specifically, in this article, the oxygen transmission rate is tested by depositing the barrier layer separately onto a plastic film and then using ASTM D3985 standard equipment.

[0040] As an example, the water vapor permeability of the barrier layer is less than or equal to 5 × 10⁻⁶. -2 g / mm 2 The oxygen permeability of the barrier layer is less than or equal to 0.5 g / mm². 2 day.

[0041] The barrier layer meets the above requirements for water vapor permeability and oxygen permeability, making it difficult for water and oxygen from the external environment to penetrate the barrier layer and enter the electrochromic device. As a result, the performance stability and service life of the electrochromic device can be greatly improved.

[0042] According to embodiments of this application, the dielectric inorganic layer is made of at least one of Al2O3, SiO2, Si3N4, TiO2, ZrO2, Nb2O5, and diamond-like carbon (DLC). Therefore, the dielectric inorganic layer has better water and oxygen barrier properties, and can better protect the electrochromic device from external mechanical contact.

[0043] According to embodiments of this application, the dielectric organic layer is made of at least one of alkylsiloxane polymers, polyacrylic acid, poly(p-xylene), polytetrafluoroethylene, polyvinylidene fluoride, and polyvinyl butyral. Therefore, the dielectric organic layer has better water and oxygen barrier properties, and can better protect the electrochromic device from external mechanical contact.

[0044] It is understandable that there are no particular restrictions on the specific types and structures of electrochromic devices, as long as they can meet the requirements for use in augmented reality glasses.

[0045] According to the embodiments of this application, referring to Figure 3 The electrochromic device 40 includes a first transparent electrode layer 41, a composite color-changing layer 42, and a second transparent electrode layer 43 stacked sequentially. Specifically, the first and second transparent electrode layers provide an electric field to the composite color-changing layer, thereby enabling the composite color-changing layer to achieve its color-changing function.

[0046] According to embodiments of this application, the materials of the first transparent electrode layer and the second transparent electrode layer can each be independently at least one of ITO (indium tin oxide), AZO (aluminum-doped zinc oxide), FTO (fluorine tin oxide), silver nanowires, copper nanowires, and conductive polymers.

[0047] According to an embodiment of this application, the thickness of the first transparent electrode layer can be 20 nm to 500 nm.

[0048] According to embodiments of this application, the thickness of the second transparent electrode layer can be 20 nm to 500 nm.

[0049] According to embodiments of this application, the composite color-changing layer may include a multi-layer structure. In some embodiments, reference is made to... Figure 4 The composite color-changing layer 42 includes a first color-changing layer 421, an electrolyte layer 422, and an ion storage layer 423 stacked together. This improves the performance of the electrochromic device.

[0050] It can be understood that the first color-changing layer, the electrolyte layer, and the ion storage layer can be sequentially stacked along the direction from the first transparent electrode layer to the second transparent electrode layer (see reference). Figure 4 Alternatively, they can be stacked sequentially along the direction from the second transparent electrode layer to the first transparent electrode layer.

[0051] According to embodiments of this application, the material of the first color-changing layer includes at least one selected from WO3, MoO3, Nb2O5, TiO2, V2O5, Ta2O5, Nb2O5, and Bi2O3. Therefore, the electrochromic device has a wider color-changing range, faster color-changing efficiency, and better performance.

[0052] According to an embodiment of this application, the thickness of the first color-changing layer can be 20 nm to 500 nm.

[0053] According to embodiments of this application, the electrolyte layer material includes LiTaO3, LiNbO3, and Li x ZrO y LiF, LiPON and Li a AlO b At least one of the following. Thus, the electrolyte layer can effectively provide a channel for ion transport, allowing ions to move between the first color-changing layer and the transparent electrode layer under the action of an electric field, thereby achieving a change in color or transparency.

[0054] According to embodiments of this application, the thickness of the electrolyte layer can be 50 nm to 2000 nm.

[0055] According to embodiments of this application, the material of the ion storage layer includes at least one selected from NiO, IrO2, Co2O3, MnO2, Rh2O3, Fe2O3, Co2O3, CuO, and Prussian blue. Therefore, the ion storage layer has better ion storage and release performance to support the electrochemical reaction of the electrochromic layer, thereby improving the stability and performance of the electrochromic device.

[0056] According to embodiments of this application, the thickness of the ion storage layer can be from 20 nm to 1000 nm.

[0057] According to embodiments of this application, in order to ensure that there is no short circuit between the anode and cathode, a specific area of ​​one or more layers of the electrochromic device can be removed when current passes through the complete electrochromic device.

[0058] In some embodiments, reference is made to Figure 4 and Figure 5 The first transparent electrode layer 41 is disposed on the surface of the first cover plate 10 facing the waveguide sheet 20; the second transparent electrode layer 43 includes a first region 431, a second region 432, and a third region 433; the first region 431 is disposed on the surface of the composite color-changing layer 42 away from the first transparent electrode layer 41, the third region 433 is disposed on the surface of the first cover plate 40 facing the waveguide sheet 20, and a gap 401 is formed between the third region 433 and the first transparent electrode layer 41; the second region 432 is disposed on the side of the composite color-changing layer 42 and connects the first region 431 and the third region 433. Thus, current can pass through the entire electrochromic device, thereby improving the performance of the electrochromic device.

[0059] According to the embodiments of this application, referring to Figure 4 In a direction perpendicular to the thickness direction of the electrochromic device 40, the electrochromic device 40 has a first side and a second side. A first transparent electrode layer 41 extends from the first side through the barrier layer 50 and beyond the barrier layer 50, with the portion of the first transparent electrode layer outside the barrier layer 50 forming a first connection terminal 410. A second transparent electrode layer 43 extends from the second side through the barrier layer 50 and beyond the barrier layer 50, with the portion of the second transparent electrode layer outside the barrier layer 50 forming a second connection terminal 430. This facilitates connection of the electrochromic device to an external circuit.

[0060] According to the embodiments of this application, referring to Figure 4 and Figure 5 The augmented reality glasses also include: a first connecting electrode 61 disposed on the first connecting end 410; and a second connecting electrode 62 disposed on the second connecting end 430. This facilitates the connection of the electrochromic device to an external circuit.

[0061] In some embodiments, the first connecting electrode and the second connecting electrode can be metal electrodes, the materials of which include, but are not limited to, silver, copper, etc.

[0062] According to some embodiments of this application, refer to Figure 6 and Figure 7 The augmented reality glasses lens further includes: a second cover plate 70, which is disposed on the side of the waveguide sheet 20 away from the first cover plate 10; and a second sealant 80, which is disposed between the second cover plate 70 and the waveguide sheet 20, and together with the second cover plate 70 and the waveguide sheet 20, defines a second air gap 200. The first and second cover plates sandwich the waveguide sheet in the middle, which can better protect the waveguide sheet, reduce the probability of its damage, and thus improve the service life of the augmented reality glasses lens.

[0063] According to embodiments of this application, the materials of the first cover plate and the second cover plate each independently include at least one of glass and resin. It is understood that the materials of the first cover plate and the second cover plate do not affect each other; they can be the same or different, and can be selected according to actual needs.

[0064] It is understood that the materials of the first and second cover plates each have a predetermined refractive power. This allows for better adjustment of the image distance. The refractive powers of the first and second cover plates do not affect each other; they can be the same or different, depending on the specific needs.

[0065] In actual use, the augmented reality glasses in this application can have the first cover plate located on the far eye side and the second cover plate located on the near eye side.

[0066] According to other embodiments of this application, refer to Figure 7 The augmented reality glasses also include a third cover plate 90, which is disposed on the side of the first cover plate 10 away from the waveguide 20, and the electrochromic device is disposed between the third cover plate and the first cover plate. Specifically, the third cover plate may have a certain refractive power, and the third cover plate is formed by a plane and a curved surface. Its surface facing the waveguide is a plane, and the electrochromic device is formed on the plane side of the third cover plate. This surface can also be fully utilized to achieve a thinner and lighter augmented reality glasses lens.

[0067] In some embodiments, reference is made to Figure 7 An adhesive layer 101 (such as an optical adhesive layer) may also be provided between the barrier layer 50 and the third cover plate 90. In another embodiment, refer to... Figure 7 An anti-reflective coating 102 can also be provided on the side of the first cover plate facing the waveguide 20. Therefore, the augmented reality glasses of this application are thin and light while providing a superior user experience.

[0068] A second aspect of this application provides a method for manufacturing the aforementioned augmented reality eyeglass lens. According to an embodiment of this application, the method includes: forming an electrochromic device on one side surface of a first cover plate; forming a barrier layer on the side of the electrochromic device away from the first cover plate; and using a first sealant to frame a waveguide sheet and the first cover plate, such that the first sealant, the waveguide sheet, and the first cover plate together define a first air gap. This method is simple, convenient, and easy to implement, and the resulting augmented reality eyeglass lens can be made thin and lightweight while possessing electrochromic functionality.

[0069] According to an embodiment of this application, forming an electrochromic device may include: sequentially forming a first transparent electrode layer, a composite color-changing layer, and a second transparent electrode layer on one side surface of a first cover plate.

[0070] According to embodiments of this application, a first transparent electrode layer can be formed on one side surface of the first cover plate using at least one of magnetron sputtering, evaporation coating, chemical vapor deposition, slot coating, spin coating, inkjet printing, and electrochemical deposition.

[0071] In some embodiments, a first monolithic transparent electrode layer can be formed on one side surface of the first cover plate using at least one of magnetron sputtering, evaporation deposition, chemical vapor deposition, slot coating, spin coating, inkjet printing, and electrochemical deposition. Then, laser etching is used to create a hollowed-out area on the first monolithic transparent electrode layer, dividing it into two parts. The portion of the first monolithic transparent electrode layer closest to the first side of the electrochromic device constitutes the first transparent electrode layer, and the portion of the first monolithic transparent electrode layer closest to the second side of the electrochromic device constitutes the third sub-layer of the second transparent electrode layer. The width of the hollowed-out area can be less than 0.5 mm.

[0072] According to embodiments of this application, as described above, the composite color-changing layer may include a first color-changing layer, an electrolyte layer, and an ion storage layer stacked together. Accordingly, forming the composite color-changing layer may include: forming the first color-changing layer using at least one method selected from magnetron sputtering, evaporation deposition, chemical vapor deposition, sol-gel, spray hydrolysis, and electrochemical deposition; forming the electrolyte layer using at least one method selected from magnetron sputtering, inkjet printing, solution chemistry, and electrochemical deposition; and forming the ion storage layer using at least one method selected from magnetron sputtering, evaporation deposition, chemical vapor deposition, sol-gel, spray hydrolysis, and electrochemical deposition. It is understood that the preparation order of the above-mentioned layers can be varied and adjusted depending on the different positions of the layers in the composite color-changing layer; for example, the ion storage layer, electrolyte layer, and first color-changing layer may be formed sequentially.

[0073] According to an embodiment of this application, after forming the first color-changing layer, electrolyte layer and ion storage layer, a step of laser etching the color-changing layer, electrolyte layer and ion storage layer may be included. Specifically, the first color-changing layer, electrolyte layer and ion storage layer on the surface of the third region of the second transparent electrode layer away from the first cover plate may be removed to form the second connection terminal in the second transparent electrode layer.

[0074] According to embodiments of this application, a second transparent electrode layer can be formed on the surface of the composite color-changing layer away from the first cover plate using at least one of magnetron sputtering, evaporation coating, chemical vapor deposition, slot coating, spin coating, inkjet printing, and electrochemical deposition.

[0075] In some embodiments, at least one of magnetron sputtering, evaporation coating, chemical vapor deposition, slot coating, spin coating, inkjet printing, and electrochemical deposition can be used to form a second full-layer transparent electrode layer on the surface of the composite color-changing layer away from the first cover plate. Then, the first color-changing layer, electrolyte layer, ion storage layer, and second full-layer transparent electrode layer on the surface of the first transparent electrode layer away from the first cover plate are removed by laser etching, and the remaining second full-layer electrode layer constitutes the second transparent electrode layer.

[0076] According to an embodiment of this application, forming a barrier layer includes: forming a dielectric inorganic layer using at least one of magnetron sputtering, chemical vapor deposition, atomic layer deposition, and ion beam deposition; and forming a dielectric organic layer using at least one of plasma polymerization, plasma-enhanced chemical vapor deposition, flash evaporation, inkjet printing, and electrofluid printing.

[0077] It is understandable that when the barrier layer includes multiple dielectric organic layers and multiple dielectric inorganic layers, the dielectric inorganic layers and dielectric organic layers can be prepared alternately in sequence.

[0078] According to an embodiment of this application, the method further includes: forming a first connection electrode on a first connection terminal using a printing method, and forming a second connection electrode on a second connection terminal.

[0079] According to an embodiment of this application, the method further includes: attaching the second cover plate to the waveguide frame using a second sealant.

[0080] As an example, the method for preparing augmented reality glasses lenses according to this application may include the following steps:

[0081] 1. Prepare the first cover plate.

[0082] 2. A full-length transparent electrode layer is deposited on one side of the first cover plate using vacuum methods such as magnetron sputtering, evaporation coating, and CVD, solution chemical methods such as slot coating, spin coating, and inkjet printing, or electrochemical deposition methods. The material of the full-length transparent electrode layer can be ITO (indium tin oxide), AZO (aluminum-doped zinc oxide), FTO (fluorine tin oxide), silver nanowires, copper nanowires, conductive polymers (such as PEDOT:PSS), etc.

[0083] 3. Using a laser, lines are etched on the entire transparent electrode layer, cutting it to the surface of the first cover plate. The width of the etched lines is <0.5mm, thus dividing the entire transparent electrode layer into a third region in the first transparent electrode layer and the second transparent electrode layer.

[0084] 4. The first color-changing layer is further deposited using vacuum methods such as magnetron sputtering, evaporation deposition, and CVD, as well as solution chemical methods such as sol-gel and spray hydrolysis, or electrochemical deposition methods. The material of the first color-changing layer can be at least one of WO3, MoO3, Nb2O5, TiO2, V2O5, Ta2O5, Nb2O5, and Bi2O3.

[0085] 5. Electrolyte layers are deposited via magnetron sputtering, or Li-containing layers are formed via inkjet printing, solution chemical deposition, or electrochemical deposition. + Al 3+ The plasma gel is then further used to form an electrolyte layer. Materials for the electrolyte layer include LiTaO3, LiNbO3, and Li... x ZrO y LiF, LiPON and Li a AlO b At least one of them.

[0086] 6. An ion storage layer is formed by magnetron sputtering. The material of the ion storage layer includes at least one of NiO, IrO2, Co2O3, MnO2, Rh2O3, Fe2O3, Co2O3, CuO, and Prussian blue.

[0087] If necessary, the deposition order of each layer in steps 4, 5, and 6 above can also be reversed, i.e., first deposit the ion storage layer, then deposit the electrolyte layer, and finally deposit the first color-changing layer.

[0088] 7. By laser scribing, the three layers of the first color-changing layer, electrolyte layer and ion storage layer on the surface of the third region away from the first cover plate in the second transparent electrode layer are scribed to the surface of the third region, that is, the first color-changing layer, electrolyte layer and ion storage layer in this region are removed.

[0089] 8. A second, integral transparent electrode layer is formed on the surface of the composite color-changing layer away from the first cover plate using vacuum methods such as magnetron sputtering, evaporation coating, and CVD, solution chemical methods such as slot coating, spin coating, and inkjet printing, or electrochemical deposition. This second transparent electrode layer is then connected to the first transparent electrode layer via laser etching in step 3. The material of the second, integral transparent electrode layer can be at least one of ITO (indium tin oxide), AZO (aluminum-doped zinc oxide), FTO (fluorine-tin oxide), silver nanowires, copper nanowires, and conductive polymers.

[0090] 9. By laser scribing, the first color-changing layer, electrolyte layer, ion storage layer and second full transparent electrode layer on the white surface of the first connection end away from the first cover plate in the first transparent electrode layer are scribed off to the surface of the first transparent electrode layer, that is, the first color-changing layer, electrolyte layer, ion storage layer and second full transparent electrode layer in this area are removed.

[0091] 10. A dielectric inorganic layer is further deposited using vacuum methods capable of forming dense films, such as magnetron sputtering, CVD, ALD, and IBD. The dielectric inorganic layer is made of at least one of Al2O3, SiO2, Si3N4, TiO2, ZrO2, Nb2O5, and diamond-like carbon (DLC). The deposition area of ​​the dielectric inorganic layer can be defined by the mask used during deposition, or by temporarily masking the area above the first and second transparent electrode layers at the edge of the first cover plate where the connecting electrodes will be printed.

[0092] 11. A dielectric organic layer is formed by deposition methods such as plasma polymerization, PECVD, flash evaporation, inkjet printing, and electrohydraulic printing. The material of the dielectric organic layer includes at least one of alkylsiloxane polymers, polyacrylic acid, parylene, polytetrafluoroethylene, polyvinylidene fluoride, and polyvinyl butyral. As an example, hexamethyldisiloxane can be used as a precursor, and an alkylsiloxane polymer can be deposited on top of it, with the deposition area being at least the same as that of the dielectric inorganic layer.

[0093] 12. A first connecting electrode is formed on the first connecting end of the first transparent electrode layer by printing, and a second connecting electrode is formed on the second connecting end of the second transparent electrode layer.

[0094] 13. Use the first sealant to attach the first cover plate and the waveguide frame, and use the second sealant to attach the second cover plate and the waveguide frame to form a complete electrochromic augmented reality lens.

[0095] A third aspect of this application provides augmented reality glasses. According to an embodiment of this application, the augmented reality glasses include the aforementioned augmented reality lenses. These glasses achieve a thin and lightweight design while possessing electrochromic functionality.

[0096] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to 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 invention.

[0097] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0098] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0099] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0100] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0101] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. An augmented reality glasses lens, characterized in that, include: First cover plate; waveguide plate, The first sealant is disposed between the first cover plate and the waveguide sheet, and together with the first cover plate and the waveguide sheet, defines a first air gap; An electrochromic device, wherein the electrochromic device is disposed on the surface of one side of the first cover plate; A barrier layer is disposed on the same side of the first cover plate as the electrochromic device and covers the electrochromic device. The barrier layer includes a dielectric organic layer and / or a dielectric inorganic layer stacked together.

2. The augmented reality glasses lens according to claim 1, characterized in that, At least one of the following conditions must be met: The thickness of the barrier layer is 0.1 μm to 20 μm; The thickness of the dielectric inorganic layer is 10 nm to 400 nm; The thickness of the dielectric organic layer is 20 nm to 10 μm.

3. The augmented reality glasses lens according to claim 1, characterized in that, The barrier layer includes a dielectric organic layer and a dielectric inorganic layer stacked together, with the dielectric inorganic layer disposed between the electrochromic device and the dielectric organic layer.

4. The augmented reality glasses lens according to claim 1, characterized in that, The barrier layer comprises multiple dielectric organic layers and multiple dielectric inorganic layers stacked and alternately arranged.

5. The augmented reality glasses lens according to claim 1, characterized in that, The barrier layer satisfies at least one of the following conditions: The water vapor permeability of the barrier layer is less than or equal to 5 × 10⁻⁶. -2 g / mm 2 day; The oxygen permeability of the barrier layer is less than or equal to 0.5 g / mm². 2 day.

6. The augmented reality glasses lens according to claim 1, characterized in that, The dielectric inorganic layer is made of at least one of Al2O3, SiO2, Si3N4, TiO2, ZrO2, Nb2O5, and diamond-like carbon; and / or The dielectric organic layer is made of at least one of alkylsiloxane polymers, polyacrylic acid, poly(p-xylene), polytetrafluoroethylene, polyvinylidene fluoride, and polyvinyl butyral.

7. The augmented reality glasses lens according to claim 1, characterized in that, Also includes: A second cover plate is disposed on the side of the waveguide sheet away from the first cover plate; The second sealant is disposed between the second cover plate and the waveguide sheet, and together with the second cover plate and the waveguide sheet, defines a second air gap.

8. The augmented reality glasses lens according to claim 7, characterized in that, At least one of the following conditions must be met: The materials of the first cover plate and the second cover plate are each independently selected from at least one of glass and resin; The materials of the first cover plate and the second cover plate each have a predetermined refractive power.

9. The augmented reality glasses lens according to claim 7, characterized in that, The first cover plate is located on the distal eye side, and the second cover plate is located on the proximal eye side.

10. A method for preparing augmented reality eyeglasses according to any one of claims 1 to 9, characterized in that, include: An electrochromic device is formed on one side surface of the first cover plate; A barrier layer is formed on the side of the electrochromic device away from the first cover plate; The waveguide sheet and the first cover plate are sealed with a first sealant so that the first sealant, the waveguide sheet and the first cover plate together define a first air gap.

11. The method according to claim 10, characterized in that, The formation of the barrier layer includes: A dielectric inorganic layer is formed using at least one of magnetron sputtering, chemical vapor deposition, atomic layer deposition, and ion beam deposition. A dielectric organic layer is formed using at least one of the following methods: plasma polymerization, plasma-enhanced chemical vapor deposition, flash evaporation, inkjet printing, and electrofluid printing.

12. The method according to claim 10, characterized in that, Also includes: The second cover plate is attached to the waveguide frame using a second sealant.

13. An augmented reality glasses, characterized in that, The augmented reality glasses lens included in any one of claims 1 to 9.

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