Lens module and wearable device

Abstract

The application provides a lens module and a wearable device. The lens module comprises a first lens assembly having a first surface, a curvature of the first surface being adjustable so that an astigmatism power of the first lens assembly is adjustable; and a second lens assembly disposed on a side of the first lens assembly away from the first surface, the second lens assembly having a second surface away from the first lens assembly, a curvature of the second surface being adjustable so that a myopia or hyperopia power of the second lens assembly is adjustable. The myopia or hyperopia power of the lens module of the embodiment of the application is adjustable and the astigmatism power is also adjustable, which can be suitable for the refractive correction of users with different myopia, hyperopia and astigmatism powers.

Description

Technical Field

[0001] This application relates to the field of electronics, specifically to a lens module and a wearable device. Background Technology

[0002] With the significant increase in the global proportion of people with refractive errors, the demand for myopia correction, hyperopia correction, and astigmatism correction has greatly increased. Currently, the prescription of lenses for myopia glasses, hyperopia glasses, astigmatism lenses, and wearable devices such as augmented reality devices is usually fixed. However, a user's eye prescription typically changes over time, requiring them to replace lenses periodically, causing considerable inconvenience. Furthermore, different people have different degrees of myopia, hyperopia, or astigmatism, meaning that a single pair of lenses can only be used for one user. Summary of the Invention

[0003] To address the aforementioned issues, this application provides a lens module whose myopia or hyperopia degree and astigmatism degree are adjustable, making it suitable for refractive correction of users with different degrees of myopia, hyperopia, and astigmatism.

[0004] The first aspect of this application provides a lens module, which includes:

[0005] A first lens assembly having a first surface whose curvature is adjustable to adjust the astigmatism power of the first lens assembly; and

[0006] A second lens assembly is disposed on the side of the first lens assembly opposite to the first surface. The second lens assembly has a second surface opposite to the first lens assembly, and the curvature of the second surface is adjustable so that the myopia or hyperopia power of the second lens assembly is adjustable.

[0007] A second aspect of this application provides a wearable device, comprising:

[0008] The lens module described in the embodiments of this application; and

[0009] A carrier component, which is used to support the lens module.

[0010] The lens module of this application embodiment includes a first lens assembly and a second lens assembly stacked on top of each other. The first lens assembly is used to correct astigmatism, and the curvature of the first surface is adjustable. The second lens assembly is used to correct myopia or hyperopia, and the curvature of the second surface is adjustable. Thus, through the cooperation of the first lens assembly and the second lens assembly, it can be used to correct myopia, hyperopia, simple myopic astigmatism, simple hyperopic astigmatism, compound myopic astigmatism, and compound hyperopic astigmatism. At the same time, the myopia degree, hyperopia degree, and astigmatism degree can all be continuously adjusted, so that one lens can be suitable for different users. When applied to wearable devices such as AR glasses, there is no need to customize different refractive correction lenses for different users, the applicable user range is wider, and the user experience can be better improved. Attached Figure Description

[0011] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 This is a schematic diagram of a lens module structure according to an embodiment of this application.

[0013] Figure 2 This is a lens module according to an embodiment of the present application. Figure 1 A schematic diagram of the cross-sectional structure along the PP direction.

[0014] Figure 3 This is a diagram showing the state of a lens module used to correct myopia according to an embodiment of this application.

[0015] Figure 4 This is a diagram showing the state of a lens module used to correct farsightedness according to an embodiment of this application.

[0016] Figure 5 This is a diagram showing the usage state of a lens module according to an embodiment of this application when used to correct simple myopic astigmatism.

[0017] Figure 6 This is a diagram showing the usage state of a lens module according to an embodiment of this application when used to correct simple hyperopic astigmatism.

[0018] Figure 7 This is a diagram showing the usage state of a lens module according to an embodiment of this application when used to correct recurrent myopic astigmatism.

[0019] Figure 8 This is a diagram showing the usage state of a lens module according to an embodiment of this application when used to correct compound hyperopic astigmatism.

[0020] Figure 9This is another embodiment of the lens module of this application. Figure 1 A schematic diagram of the cross-sectional structure along the PP direction.

[0021] Figure 10 This is a schematic diagram of the structure of an adjustment mechanism according to an embodiment of this application.

[0022] Figure 11 When the first lens assembly of one embodiment of this application is used to correct hyperopic astigmatism, along... Figure 10 A schematic diagram of a cross-section along the MM direction.

[0023] Figure 12 When the first lens assembly of one embodiment of this application is used to correct myopic astigmatism, along Figure 10 A schematic diagram of a cross-section along the MM direction.

[0024] Figure 13 This is another embodiment of the lens module of this application. Figure 1 A schematic diagram of the cross-sectional structure along the PP direction.

[0025] Figure 14 When the lens module of another embodiment of this application is used to correct myopia, along Figure 10 A sectional side view along the MM direction.

[0026] Figure 15 When the lens module of another embodiment of this application is used to correct farsightedness, along... Figure 10 A sectional side view along the MM direction.

[0027] Figure 16 This is a schematic diagram of the structure of the second lens assembly according to an embodiment of this application.

[0028] Figure 17 This is a schematic diagram of the structure of the second lens assembly according to another embodiment of this application.

[0029] Figure 18 (a) is a schematic diagram of the image formed on the retina by compound myopic astigmatism, and (b) and (c) are schematic diagrams of the correction process of compound myopic astigmatism, respectively.

[0030] Figure 19 In another embodiment, the lens module is used to correct recurrent myopic astigmatism, along... Figure 10 A sectional side view along the MM direction.

[0031] Figure 20 (a) is a schematic diagram of the image formation of compound myopic astigmatism on the retina, and (b) and (c) are schematic diagrams of another process of correction of compound myopic astigmatism.

[0032] Figure 21 In another embodiment, the lens module is used to correct recurrent myopic astigmatism, along... Figure 10 A sectional side view along the MM direction.

[0033] Figure 22 (a) is a schematic diagram of the image formed on the retina by compound hyperopic astigmatism, and (b) and (c) are schematic diagrams of the correction process of compound hyperopic astigmatism, respectively.

[0034] Figure 23 Another embodiment of the lens module is used to correct compound hyperopic astigmatism, along... Figure 10 A sectional side view along the MM direction.

[0035] Figure 24 (a) is a schematic diagram of the image formation of compound hyperopic astigmatism on the retina, and (b) and (c) are schematic diagrams of another process of correction of compound hyperopic astigmatism.

[0036] Figure 25 Another embodiment of the lens module is used to correct compound hyperopic astigmatism, along... Figure 10 A sectional side view along the MM direction.

[0037] Figure 26 This is another embodiment of the lens module of this application. Figure 1 A schematic diagram of the cross-sectional structure along the PP direction.

[0038] Figure 27 This is another embodiment of the lens module of this application. Figure 1 A schematic diagram of the cross-sectional structure along the PP direction.

[0039] Figure 28 This is another embodiment of the lens module of this application. Figure 1 A schematic diagram of the cross-sectional structure along the PP direction.

[0040] Figure 29 This is another embodiment of the lens module of this application. Figure 1 A schematic diagram of the cross-sectional structure along the PP direction.

[0041] Figure 30 This is a schematic diagram of the structure of an optical waveguide sheet according to an embodiment of this application.

[0042] Figure 31 This is a schematic diagram of the structure of a wearable device according to an embodiment of this application.

[0043] Figure 32 This is a wearable device according to an embodiment of the present application. Figure 31 A cross-sectional view of the structure along the QQ direction.

[0044] Figure 33 This is another embodiment of the wearable device in this application. Figure 31 A cross-sectional view of the structure along the QQ direction.

[0045] Figure 34 This is another embodiment of the carrier along the edge of the present application. Figure 31 A cross-sectional view of the structure along the QQ direction.

[0046] Figure 35 This is another embodiment of the wearable device in this application. Figure 31 A cross-sectional view of the structure along the QQ direction.

[0047] Figure 36 This is a schematic diagram of the structure of a wearable device according to another embodiment of this application.

[0048] Figure 37 This is a circuit block diagram of a wearable device according to another embodiment of this application.

[0049] Explanation of reference numerals in the attached figures:

[0050] 100-Lens module, 10-First lens assembly, 11-First surface, 101-First receiving cavity, 12-First light-transmitting layer, 14-First elastic layer, 16-First fluid, 18-Adjustment mechanism, 181-Adjustment component, 1811-Adjustment sub-component, 1811a-First adjustment sub-component, 1811b-Second adjustment sub-component, 1811c-Third adjustment sub-component, 1811d-Fourth adjustment sub-component, 183-First actuator, 185-First valve, 30-Second lens assembly, 301-Second receiving cavity, 31-Second surface, 32-Support layer, 33-Second light-transmitting layer, 34-Second elastic layer, 36-Third fluid 38-Drive mechanism, 381-Second actuator, 383-Elastic container, 385-Second valve, 50-Optical waveguide assembly, 51-First protective sheet, 53-Optical waveguide sheet, 531-Optical transmission part, 533-Optical coupler input part, 535-Optical coupler output part, 55-Second protective sheet, 200-Wearable device, 210-Carrier, 201-Accommodation space, 211-Support part, 213-First carrier part, 215-Second carrier part, 230-Wearing part, 231-First wearing part, 233-Second wearing part, 250-Projection optical engine, 251-Display, 253-Lens, 270-Processor, 290-Memory. Detailed Implementation

[0051] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present application.

[0052] The terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or apparatuses.

[0053] The technical solutions in the embodiments of this application will now be described with reference to the accompanying drawings.

[0054] It should be noted that, for ease of explanation, the same reference numerals denote the same components in the embodiments of this application, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments.

[0055] With the increasing number of people suffering from refractive errors such as myopia, hyperopia, and astigmatism, the need for refractive correction is growing. Currently, the prescriptions for myopia, hyperopia, and astigmatism lenses are usually fixed and cannot be adjusted, which greatly limits their use.

[0056] Please see Figure 1 and Figure 2 This application provides a lens module 100, which includes a first lens assembly 10 and a second lens assembly 30 stacked together. The first lens assembly 10 has a first surface 11, the curvature of which is adjustable to adjust the astigmatism power of the first lens assembly 10; the second lens assembly 30 is disposed on the side of the first lens assembly 10 opposite to the first surface 10, and the second lens assembly 30 has a second surface 31 opposite to the first lens assembly 10, the curvature of which is adjustable to adjust the myopia or hyperopia power of the second lens assembly 30.

[0057] Understandably, the first lens assembly 10 is a cylindrical lens used to correct astigmatism, and its first surface 11 is cylindrical. The degree of astigmatism can be adjusted by adjusting the curvature and shape of the cylindrical surface. The second lens assembly 30 is a spherical lens used to correct myopia or hyperopia, and its second surface 31 is spherical. The degree of myopia or hyperopia can be adjusted by adjusting the curvature and shape of the first surface 11.

[0058] The lens module 100 of this application embodiment can be applied to wearable devices such as myopia glasses, hyperopia glasses, astigmatism glasses, augmented reality glasses (AR glasses), augmented reality helmets, augmented reality masks, and virtual reality glasses.

[0059] Astigmatism is a refractive error of the eye related to the curvature of the cornea. When parallel light rays enter the eye, they cannot converge at a single point (focal point) because the refractive power of the eye varies along different meridians, thus failing to form a clear image. This condition is called astigmatism. Even with accommodation or moving the target closer to the eye, an astigmatic eye cannot form a clear image; only with the wearing of appropriate cylindrical lenses can a clear image be formed on the retina. Astigmatism can be classified into regular and irregular types. Generally, only regular astigmatism can be corrected with lenses, while irregular astigmatism requires surgical correction. Regular astigmatism is further divided into simple myopic / hyperopic astigmatism and compound myopic / hyperopic astigmatism. Simple myopic / hyperopic astigmatism can be directly corrected with cylindrical lenses, with negative cylindrical lenses and positive cylindrical lenses used depending on the specific correction requirements. Compound myopic / hyperopic astigmatism requires a combination of cylindrical lenses and concave / convex lenses for correction. Simple myopic astigmatism occurs when one main astigmatic foci fall on the retina, while the other focuses infinitely in front of the retina. Simple hyperopic astigmatism occurs when one main astigmatic foci fall on the retina, while the other focuses infinitely behind the retina. Compound myopic astigmatism occurs when two mutually perpendicular astigmatic foci focus in front of the retina, but at different points. Compound hyperopic astigmatism occurs when two mutually perpendicular astigmatic foci focus behind the retina, but at different points.

[0060] When the lens module 100 of this application is applied, such as Figure 3 and Figure 4 As shown, when the user is only nearsighted or farsighted, it is only necessary to adjust the curvature of the second surface 31 of the second lens assembly 30 so that the nearsightedness or farsightedness of the second lens assembly 30 is the user's target prescription. Figure 5 and Figure 6 As shown, when the user only has simple myopic astigmatism or simple hyperopic astigmatism, it is only necessary to adjust the curvature of the first surface 11 of the first lens assembly 10 so that the myopic astigmatism power or hyperopic astigmatism power of the first lens assembly 10 is the user's target power. Figure 7 and Figure 8 As shown, when the user has compound myopic astigmatism or compound hyperopic astigmatism, the curvature of the first surface 11 of the first lens assembly 10 and the curvature of the second surface 31 of the second lens assembly 30 are adjusted simultaneously. Through the cooperation of the first lens assembly 10 and the second lens assembly 30, the user's compound myopia or compound hyperopia is corrected.

[0061] The lens module 100 of this application embodiment includes a first lens assembly 10 and a second lens assembly 30 stacked together. The first lens assembly 10 is used to correct astigmatism, and the curvature of the first surface 11 is adjustable. The second lens assembly 30 is used to correct myopia or hyperopia, and the curvature of the second surface 31 is adjustable. Thus, through the cooperation of the first lens assembly 10 and the second lens assembly 30, it can be used to correct myopia, hyperopia, simple myopic astigmatism, simple hyperopic astigmatism, compound myopic astigmatism, and compound hyperopic astigmatism. At the same time, the myopia power, hyperopia power, and astigmatism power can all be continuously adjusted, so that one lens can be suitable for different users. When applied to wearable devices such as AR glasses, it is not necessary to customize different refractive correction lenses for different users, thus broadening the applicable user range and improving the user experience. In addition, the first lens assembly 10 and the second lens assembly 30 together form a single lens, which can be thinner and lighter compared to a separate design, providing better comfort when worn by the user.

[0062] Optionally, such as Figure 5 and Figure 6 As shown, the first surface 11 can be a concave cylindrical surface or a convex cylindrical surface. When the first surface 11 is a concave cylindrical surface, the first lens assembly 10 is used to correct myopic astigmatism; when the first surface 11 is a convex cylindrical surface, the first lens assembly 10 is used to correct hyperopic astigmatism. When the user only has simple myopic astigmatism or simple hyperopic astigmatism, it is only necessary to adjust the first surface 11 to a concave or convex cylindrical surface with the corresponding curvature. By adjusting the surface shape and curvature of the first surface 11, the same lens module 100 can be used for users with different degrees of astigmatism, both myopic and hyperopic. In this application, the term "concave cylindrical surface" refers to an inwardly recessed cylindrical surface, i.e., a cylindrical concave surface. The term "convex cylindrical surface" refers to an outwardly convex cylindrical surface, i.e., a cylindrical convex surface.

[0063] Optionally, such as Figure 3 and Figure 4 As shown, the second surface 31 is either a concave spherical surface or a convex spherical surface. When the second surface 31 is a concave spherical surface, the second lens assembly 30 is used to correct myopia; when the second surface 31 is a convex spherical surface, the second lens assembly 30 is used to correct hyperopia. When the user is only myopic or hyperopic (i.e., without astigmatism), it is only necessary to adjust the second surface 31 to a concave or convex spherical surface with the corresponding curvature. By adjusting the surface shape and curvature of the second surface 31, the same lens module 100 can be used for myopic users with different degrees of myopia and hyperopic users with different degrees of hyperopia. In this application, the term "concave spherical surface" refers to an inwardly concave spherical surface, i.e., a spherically concave surface. The term "convex spherical surface" refers to an outwardly convex spherical surface, i.e., a spherically convex surface.

[0064] In some embodiments, the first lens assembly 10 is a cylindrical lens, and the first lens assembly 10 has an axis. The cylindrical surface of the first surface 11 is cylindrical, and the direction of the axis of the first lens assembly 10 is adjustable. Different astigmatic users have different directions of astigmatism (i.e., different axis directions). Therefore, even lenses with the same astigmatism power cannot be used if the user's astigmatism axis is different. The astigmatism axis of the first lens assembly 10 of this application can be arbitrarily adjusted as needed, thereby being suitable for users with different axis directions and different astigmatism powers, thus having a wider range of applications. The term "axis" represents the direction of astigmatism. Astigmatism glasses need to be accurately and stably placed on the axis to be corrected to ensure clear vision. Therefore, the more and more comprehensive the "axis" provided by the astigmatism glasses, the better the effect of correcting astigmatism will be.

[0065] Optionally, the adjustable radius of curvature R1 of the first surface 11 along the direction perpendicular to the axis is in the range of R1 ≥ 0.065m. Further, the adjustable radius of curvature R1 of the first surface 11 along the direction perpendicular to the axis is in the range of 0.065m ≤ R1 ≤ 1.84m. Specifically, the adjustable radius of curvature R1 of the first surface 11 along the direction perpendicular to the axis can be, but is not limited to, 0.065m, 0.08m, 0.1m, 0.3m, 0.5m, 0.8m, 1.0m, 1.2m, 1.4m, 1.6m, 1.84m, 2.0m, 3.0m, 5m, 8m, etc. The smaller the radius of curvature, the greater the curvature, and the higher the degree of myopic or hyperopic astigmatism that the first lens assembly 10 can adjust.

[0066] Optionally, the adjustable myopic astigmatism power De1 of the first lens assembly 10 is within the range of 0° ≤ De1 ≤ 700°. Specifically, De1 can be, but is not limited to, 0°, 25°, 50°, 75°, 100°, 125°, 150°, 175°, 200°, 225°, 250°, 275°, 300°, 325°, 350°, 375°, 400°, 425°, 450°, 475°, 500°, 525°, 550°, 575°, 600°, 625°, 650°, 675°, 700°, etc. The higher the adjustable myopic astigmatism power of the first lens assembly 10, the greater the curvature of the first surface 11.

[0067] Optionally, the adjustable hyperopic astigmatism power De2 of the first lens assembly 10 is in the range of 0° ≤ De2 ≤ 700°. Specifically, De2 can be, but is not limited to, 0°, 25°, 50°, 75°, 100°, 125°, 150°, 175°, 200°, 225°, 250°, 275°, 300°, 325°, 350°, 375°, 400°, 425°, 450°, 475°, 500°, 525°, 550°, 575°, 600°, 625°, 650°, 675°, 700°, etc. The higher the adjustable hyperopic astigmatism power of the first lens assembly 10, the greater the curvature of the first surface 11.

[0068] In some embodiments, the adjustable radius of curvature R2 of the second surface 31 is in the range of R2 ≥ 0.065m. Further, the adjustable radius of curvature R2 of the second surface 31 along the direction perpendicular to the axis is in the range of 0.065m ≤ R2 ≤ 1.84m. Specifically, the adjustable radius of curvature R2 of the second surface 31 along the direction perpendicular to the axis can be, but is not limited to, 0.065m, 0.08m, 0.1m, 0.3m, 0.5m, 0.8m, 1.0m, 1.2m, 1.4m, 1.6m, 1.84m, 2.0m, 3.0m, 5m, 8m, etc. The smaller the radius of curvature, the greater the curvature, and the higher the degree of myopia or hyperopia that the second lens assembly 30 can adjust.

[0069] Optionally, the adjustable myopia degree De3 of the second lens assembly 30 is in the range of 0° ≤ De3 ≤ 700°. Specifically, De3 can be, but is not limited to, 0°, 25°, 50°, 75°, 100°, 125°, 150°, 175°, 200°, 225°, 250°, 275°, 300°, 325°, 350°, 375°, 400°, 425°, 450°, 475°, 500°, 525°, 550°, 575°, 600°, 625°, 650°, 675°, 700°, etc. The higher the adjustable myopia degree of the second lens assembly 30, the greater the curvature of the second surface 31.

[0070] Optionally, the adjustable hyperopic power De4 of the second lens assembly 30 is in the range of 0° ≤ De4 ≤ 700°. Specifically, De4 can be, but is not limited to, 0°, 25°, 50°, 75°, 100°, 125°, 150°, 175°, 200°, 225°, 250°, 275°, 300°, 325°, 350°, 375°, 400°, 425°, 450°, 475°, 500°, 525°, 550°, 575°, 600°, 625°, 650°, 675°, 700°, etc. The higher the adjustable hyperopic power of the second lens assembly 30, the greater the curvature of the second surface 31.

[0071] Optionally, the adjustable focal length f of the second lens assembly 30 can be f ≥ 1 / 7m, or f ≤ -1 / 7m. Further, the range of the adjustable focal length f of the second lens assembly 30 is 1 / 7m ≤ f ≤ 4m, or -4m ≤ f ≤ -1 / 7m. Specifically, the adjustable focal length f of the second lens assembly 30 can be, but is not limited to, -10m, -9m, -8m, -7m, -6m, -5m, -4m, -3m, -2m, -1m, -1 / 7m, 1 / 7m, 1m, 2m, 3m, 4m, 5m, 6m, 7m, 8m, 9m, 10m, etc. The smaller the absolute value of the adjustable focal length f of the second lens assembly 30, the higher the adjustable myopia or hyperopia power of the second lens assembly 30, and the greater the curvature of the second surface 31.

[0072] Please see Figure 9 and Figure 10 In some embodiments, the first lens assembly 10 includes a first light-transmitting layer 12, a first elastic layer 14, a first fluid 16, and an adjustment mechanism 18. The first elastic layer 14 is disposed on one side of the first light-transmitting layer 12 and forms a first receiving cavity 101 with the first light-transmitting layer 12. The surface of the first elastic layer 14 facing away from the first light-transmitting layer 12 is the first surface 11. The first fluid 16 is sealed within the first receiving cavity 101. The adjustment mechanism 18 is used to compress the first elastic layer 14 to deform the first elastic layer 14 and make the first surface 11 cylindrical. The curvature of the cylindrical surface is adjustable so that the astigmatism power of the first lens assembly 10 is adjustable.

[0073] In some embodiments, the adjustment mechanism 18 includes the adjustment member 181, which is disposed on the surface of the first elastic layer 14 opposite to the first light-transmitting layer 12. The adjustment member 181 includes a plurality of adjustment sub-members 1811, which are arranged sequentially to form a ring structure. The height of the plurality of adjustment sub-members 1811 is adjustable along the stacking direction of the first light-transmitting layer 12, the first elastic layer 14, and the adjustment member 181. When the height of the plurality of adjustment sub-members 1811 changes according to a preset rule, the plurality of adjustment sub-members 1811 respectively press the first elastic layer 14, causing the first elastic layer 14 to deform and the first surface 11 to become a cylindrical surface. The curvature of the cylindrical surface is adjustable, so that the astigmatism power of the first lens assembly 10 is adjustable. It can be understood that the first lens assembly 10 is a liquid lens.

[0074] Optionally, the outer periphery of the first elastic layer 14 is connected to the first light-transmitting layer 12 to form a sealed first receiving cavity 101, which is filled with a first fluid 16.

[0075] Optionally, in the initial state, the first receiving cavity 101 is filled with the first fluid 16, and the first elastic layer 14 is in a relaxed state (i.e., neither stretched nor compressed). When the height of the plurality of adjustment sub-components 1811 changes according to a preset pattern, the degree of compression of the first elastic layer 14 by the adjustment sub-components 1811 at different heights is different, thereby causing different positions of the first elastic layer 14 to exert different degrees of compression on the first fluid 16. Under the combined action of the adjustment sub-components 181 and the first fluid 16, the first elastic layer 14 undergoes different degrees of deformation, and the first surface 11 forms a surface shape and curvature that matches the shape of the adjustment sub-components 181, thereby changing the adjustment of the astigmatism power. In addition, by adjusting the height change trend of the plurality of adjustment sub-components 711, the direction of deformation of the elastic layer 30 is adjusted, thereby adjusting the axis direction of the astigmatic lens 100. The method for adjusting the astigmatism power of the first lens assembly 10 in this embodiment is simple and has a simple structure. By adjusting the height of multiple adjustment sub-components 1811, not only can the correction of any astigmatism power be achieved, but also the direction of the axis can be adjusted to achieve the correction of astigmatism at any axis.

[0076] In some embodiments, the refractive index n1 of the first light-transmitting layer 12, the refractive index n2 of the first elastic layer 14, and the refractive index n3 of the first fluid 16 satisfy the following relationship:

[0077] 0.95≤n1 / n2≤1.05;

[0078] 0.95≤n1 / n3≤1.05;

[0079] 0.95≤n2 / n3≤1.05.

[0080] Specifically, n1 / n2 can be, but is not limited to, 0.95, 0.96, 0.97, 0.98, 0.99, 1.01, 1.02, 1.03, 1.04, 1.05, etc. n1 / n3 can be, but is not limited to, 0.95, 0.96, 0.97, 0.98, 0.99, 1.01, 1.02, 1.03, 1.04, 1.05, etc. n2 / n3 can be, but is not limited to, 0.95, 0.96, 0.97, 0.98, 0.99, 1.01, 1.02, 1.03, 1.04, 1.05, etc.

[0081] The closer the refractive indices n1 of the first light-transmitting layer 12, n2 of the first elastic layer 14, and n3 of the first fluid 16 are, the less likely light is to be refracted when it passes through the interfaces between each pair of the first light-transmitting layer 12, the first elastic layer 14, and the first fluid 16. Therefore, the closer the refractive indices n1 of the first light-transmitting layer 12, n2 of the first elastic layer 14, and n3 of the first fluid 16 are, the better.

[0082] In one specific embodiment, the refractive index n1 of the first light-transmitting layer 12, the refractive index n2 of the first elastic layer 14, and the refractive index n3 of the first fluid 16 are equal.

[0083] In some embodiments, the elastic modulus E1 of the first light-transmitting layer 12 is in the range of E1 ≥ 50 GPa. Specifically, the elastic modulus E1 of the first light-transmitting layer 12 can be, but is not limited to, 50 GPa, 53 GPa, 55 GPa, 60 GPa, 70 GPa, 80 GPa, 90 GPa, 100 GPa, etc. The elastic modulus E1 of the first light-transmitting layer 12 should not be too low. When the elastic modulus of the first light-transmitting layer 12 is too low, it is difficult to ensure that the first light-transmitting layer 12 always remains flat and does not deform when adjusting the astigmatism power of the first lens assembly 10 and the hyperopia or myopia power of the second lens assembly 30. The larger the elastic modulus E1 of the first light-transmitting layer 12, the better. The larger the elastic modulus of the first light-transmitting layer 12, the thinner the first light-transmitting layer 12 can be, which is more conducive to the thinning of the lens module 100. However, as the elastic modulus of the first light-transmitting layer 12 increases, the requirements for the material of the first light-transmitting layer 12 become higher and higher, which will increase the cost of the first light-transmitting layer 12.

[0084] Optionally, the light transmittance of the first light-transmitting layer 12 is greater than or equal to 85%. Further, the light transmittance of the first light-transmitting layer 12 is greater than or equal to 90%. Further still, the light transmittance of the first light-transmitting layer 12 is greater than or equal to 95%. Specifically, the light transmittance of the first light-transmitting layer 12 can be, but is not limited to, 85%, 88%, 90%, 91%, 92%, 93%, 94%, 95%, 96%, 97%, 98%, 99%, etc. The higher the light transmittance of the first light-transmitting layer 12, the better the visual effect of the lens module 100.

[0085] Optionally, the material of the first light-transmitting layer 12 may be, but is not limited to, at least one of polymethyl methacrylate (PMMA), polycarbonate (PC), glass, sapphire, etc. These materials are generally light-transmitting, which can make the overall color uniformity of the lens module 100 better, have a better appearance, and easily obtain a first light-transmitting layer 12 with an elastic modulus greater than 50 GPa.

[0086] Optionally, the thickness of the first light-transmitting layer 12 ranges from 1 mm to 4 mm. Specifically, the thickness of the first light-transmitting layer 12 can be, but is not limited to, 1 mm, 1.5 mm, 2 mm, 2.5 mm, 3 mm, 3.5 mm, and 4 mm. If the thickness of the first light-transmitting layer 12 is too thin, it is prone to deformation or damage during the adjustment of the first lens assembly 10 and the second lens assembly 30 degrees. If the thickness of the first light-transmitting layer 12 is too thick, it increases the weight and thickness of the lens module 100, which is not conducive to the thinning and lightening of the lens module 100.

[0087] In some embodiments, the elastic modulus E2 of the first elastic layer 14 is in the range of 10 MPa ≤ E2 ≤ 100 MPa; specifically, the elastic modulus E2 of the first elastic layer 14 can be, but is not limited to, 10 MPa, 20 MPa, 30 MPa, 40 MPa, 50 MPa, 60 MPa, 70 MPa, 80 MPa, 90 MPa, 100 MPa, etc. The elastic modulus of the first elastic layer 14 should not be too large or too small. If the elastic modulus of the first elastic layer 14 is too large, it increases the difficulty of adjusting the astigmatism of the first lens assembly 10. If the elastic modulus of the first elastic layer 14 is too small, the first elastic layer 14 is more significantly affected by external forces such as gravity. For example, during movement, due to inertial factors (such as the inertia generated by the movement of the first elastic layer 14 when adjusting the height of the adjusting component 1811), the first elastic layer 14 deforms, making it difficult to maintain the shape of the first surface 11 of the first elastic layer 14, thus affecting the adjustment of the astigmatism of the first lens assembly 10.

[0088] Optionally, the first elastic layer 14 is light-transmitting, and the light transmittance of the first elastic layer 14 is greater than or equal to 85%. Further, the light transmittance of the first elastic layer 14 is greater than or equal to 90%. Further still, the light transmittance of the first elastic layer 14 is greater than or equal to 95%. Specifically, the light transmittance of the first elastic layer 14 can be, but is not limited to, 85%, 88%, 90%, 91%, 92%, 93%, 94%, 95%, 96%, 97%, 98%, 99%, etc. The higher the light transmittance of the first elastic layer 14, the better the visual effect of the lens module 100.

[0089] Optionally, the material of the first elastic layer 14 may be, but is not limited to, at least one of polydimethylsiloxane (PDMA), polymethyl methacrylate (PMMA), polycarbonate (PC), and polyethylene terephthalate (PET). These materials are generally translucent, which can result in better overall color uniformity of the lens module 100 and a better appearance.

[0090] Optionally, along the stacking direction of the first elastic layer 14 and the first light-transmitting layer 12, the thickness of the first elastic layer 14 ranges from 50 μm to 300 μm. Further, the thickness of the first elastic layer 14 ranges from 100 μm to 200 μm. Specifically, the thickness of the first elastic layer 14 can be, but is not limited to, 50 μm, 60 μm, 70 μm, 80 μm, 100 μm, 120 μm, 150 μm, 180 μm, 200 μm, 220 μm, 250 μm, 280 μm, 300 μm, etc. If the first elastic layer 14 is too thin, the middle position of the first elastic layer 14 is prone to depression when adjusting the astigmatism power, making it difficult to maintain an ideal cylindrical surface; if the first elastic layer 14 is too thick, it is difficult to control the deformation of the first elastic layer 14 through the adjusting component 1811, increasing the difficulty of adjusting the astigmatism power.

[0091] Optionally, the first light-transmitting layer 12 and the first elastic layer 14 can be bonded together by welding (e.g., after bonding the first light-transmitting layer 12 and the first elastic layer 14, applying high temperature and pressure to melt the materials of the first light-transmitting layer 12 and the first elastic layer 14, and then bonding them together), hot melt adhesive, UV adhesive, optical adhesive (OCA adhesive), etc. When the materials of the first light-transmitting layer 12 and the first elastic layer 14 are PMMA or PC, the first light-transmitting layer 12 and the first elastic layer 14 can be bonded by welding. When the materials of the first light-transmitting layer 12 and the first elastic layer 14 are other materials, they can be bonded together by hot melt adhesive, UV adhesive, optical adhesive (OCA adhesive), etc.

[0092] Optionally, the refractive index of the first fluid 16 is greater than 1.4. Specifically, the refractive index of the first fluid 16 can be, but is not limited to, 1.4, 1.43, 1.45, 1.48, 1.50, 1.53, 1.45, 1.48, 1.60, 1.62, 1.65, 1.67, 1.7, etc. The first fluid 16 can be, but is not limited to, at least one of dimethyl silicone oil, polyethylene glycol (e.g., PEG200), etc.

[0093] In some embodiments, when the height of the plurality of adjusting sub-components 1811 changes according to a preset rule, such that the surface of the adjusting sub-component 181 facing the first elastic layer 14 is a concave cylindrical surface, the plurality of adjusting sub-components 1811 compress the first elastic layer 14 to deform, so that the first surface 11 of the first elastic layer 14 is a convex cylindrical surface; when the height of the plurality of adjusting sub-components 1811 changes according to a preset rule, such that the surface of the adjusting sub-component 181 facing the first elastic layer 14 is a convex cylindrical surface, the plurality of adjusting sub-components 1811 compress the first elastic layer 14 to deform, so that the first surface 11 of the first elastic layer 14 is a concave cylindrical surface.

[0094] The overall structure of the adjusting member 181 is a ring structure, that is, multiple adjusting sub-members 1811 are arranged sequentially to form a ring structure. The surface of the adjusting member 181 facing the first elastic layer 14 is a concave cylindrical surface. In other words, the surface of the ring-shaped adjusting member 181 facing the first elastic layer 14 forms a concave cylindrical surface. The adjusting sub-members 1811 at both ends of the concavity are higher, which will squeeze the first elastic layer 14 more and move it closer to the first light-transmitting layer 12, while the height in the middle of the concavity is lower, and the first elastic layer 14 in the middle of the concavity moves away from the first light-transmitting layer 12, thereby making the first surface 11 of the first elastic layer 14 a convex cylindrical surface.

[0095] Similarly, the surface of the adjusting member 181 facing the first elastic layer 14 is a convex cylindrical surface. Understandably, the annular adjusting member 181 facing the first elastic layer 14 forms a cylindrical surface that convexes towards the first elastic layer 14. The adjusting member 1811 in the middle of the convexity is higher, causing it to press the first elastic layer 14 further towards the first light-transmitting layer 12. Conversely, the two ends of the convexity are lower, causing the first elastic layer 14 at these ends to move away from the first light-transmitting layer 12, thus making the first surface 11 of the first elastic layer 14 a concave cylindrical surface.

[0096] Understandably, during the adjustment of the astigmatism power of the first lens assembly 10, the adjusting member 181 is always located on the first elastic layer 14; in other words, the adjusting member 181 is always in contact with the first elastic layer 14. Therefore, the curvature of the surface of the adjusting member 181 facing the first elastic layer 14 is always equal to that of the first surface 11.

[0097] Please see also Figure 11 and Figure 12 In some embodiments, when the first lens assembly 10 is used to correct astigmatism, a plurality of adjustment sub-components 1811 include a first adjustment sub-component 1811a and a second adjustment sub-component 1811b disposed opposite to each other, and a third adjustment sub-component 1811c and a fourth adjustment sub-component 1811d disposed opposite to each other. The line connecting the first adjustment sub-component 1811a and the second adjustment sub-component 1811b intersects the line connecting the third adjustment sub-component 1811c and the fourth adjustment sub-component 1811d. The heights of the plurality of adjustment sub-components 1811 exhibit the same trend of change from the third adjustment sub-component 1811c towards the first adjustment sub-component 1811a, from the third adjustment sub-component 1811c towards the second adjustment sub-component 1811b, from the fourth adjustment sub-component 1811d towards the first adjustment sub-component 1811a, and from the fourth adjustment sub-component 1811d towards the second adjustment sub-component 1811b; the trend is either gradually increasing or gradually decreasing. In other words, as... Figure 11 As shown, when the trend of change is gradually increasing, the height of the plurality of adjustment sub-components 1811 gradually increases in the directions of the third adjustment sub-component 1811c towards the first adjustment sub-component 1811a, from the third adjustment sub-component 1811c towards the second adjustment sub-component 1811b, from the fourth adjustment sub-component 1811d towards the first adjustment sub-component 1811a, and from the fourth adjustment sub-component 1811d towards the second adjustment sub-component 1811b. At this time, the surface of the adjustment member 181 facing the first elastic layer 14 is a concave cylindrical surface, the first surface 11 of the first elastic layer 14 is a convex cylindrical surface, and the first lens assembly 10 is used to adjust hyperopic astigmatism. Figure 12 As shown, when the trend of change is gradually decreasing, the height of the plurality of adjustment sub-components 1811 gradually decreases in the directions of the third adjustment sub-component 1811c toward the first adjustment sub-component 1811a, from the third adjustment sub-component 1811c toward the second adjustment sub-component 1811b, from the fourth adjustment sub-component 1811d toward the first adjustment sub-component 1811a, and from the fourth adjustment sub-component 1811d toward the second adjustment sub-component 1811b. At this time, the surface of the adjustment member 181 facing the first elastic layer 14 is a convex cylindrical surface, and the first surface 11 of the first elastic layer 14 is a concave cylindrical surface. The first lens assembly 10 is used to adjust myopic astigmatism. By adjusting the height of the plurality of adjustment sub-components 1811, not only can the correction of any degree of astigmatism (myopic astigmatism and hyperopic astigmatism) be achieved, but also the direction of the axis can be adjusted to achieve the correction of astigmatism at any axis.

[0098] In one specific embodiment, the line connecting the first adjustment sub-component 1811a and the second adjustment sub-component 1811b is perpendicular to the line connecting the third adjustment sub-component 1811c and the fourth adjustment sub-component 1811d.

[0099] Please see again Figure 10 In some embodiments, the adjustment mechanism 18 further includes a first actuator 183. The first actuator 183 is used to adjust the volume of each of the adjustment sub-components 1811 according to a preset rule, thereby adjusting the height of the plurality of adjustment sub-components 1811 along the stacking direction of the first light-transmitting layer 12, the first elastic layer 14, and the adjustment component 181. By controlling the volume of the adjustment sub-components 1811 through the first actuator 183, the height of the adjustment sub-components 1811 is controlled. The adjustment method is simple and easy to implement.

[0100] In one specific embodiment, the adjusting sub-component 1811 is an elastic balloon (e.g., an elastic airbag), and the adjusting mechanism 18 further includes a second fluid (not shown) and a plurality of first valves 185; the second fluid is located within the adjusting sub-component 1811; each first valve 185 is connected to one adjusting sub-component 1811, and different first valves 185 are connected to different adjusting sub-components 1811; the first actuator 183 is connected to the plurality of first valves 185; when the first actuator 183 and the plurality of first valves 185 are all open, the first actuator 183 is used to adjust the amount of the second fluid within the plurality of adjusting sub-components 1811 to adjust the volume of the adjusting sub-component 1811, thereby causing the height of the plurality of adjusting sub-components 1811 to change according to a preset rule, thereby realizing the adjustment of the astigmatism power of the first lens assembly 10.

[0101] The term "connection" in this application can refer to two parts being directly connected, or two components being connected via a pipe or conduit.

[0102] Understandably, the plurality of regulating components 1811 are arranged in sequence to form a ring structure, which consists of a plurality of cavities that contain the second fluid, forming a hollow ring cavity structure.

[0103] Optionally, when the first lens assembly 10 is in the initial state, each elastic air bladder is in a semi-inflated state. At this time, each elastic air bladder is the same size. Therefore, the first elastic layer 14 is also in a planar state, and the first lens assembly 10 does not have astigmatism.

[0104] When the first actuator 183 injects the second fluid into the regulating component 1811 (i.e., the elastic balloon), the amount of the second fluid in the regulating component 1811 increases, causing the volume of the regulating component 1811 to expand and its height to increase. When the first actuator 183 withdraws the second fluid from the regulating component 1811, the amount of the second fluid in the regulating component 1811 decreases, causing the volume of the regulating component 1811 to shrink and its height to decrease. By controlling the amount of the second fluid in the regulating component 1811, the expansion or contraction of the regulating component 1811 can be controlled, thereby controlling the volume of the regulating component 1811 and thus its height. This method is simple and easy to implement. Furthermore, each regulating component 1811 is equipped with a first valve 185. By controlling the opening degree of the first valve 185, the height of each regulating component 1811 can be controlled independently.

[0105] Please see also Figure 10 Specifically, when the first lens assembly 10 is used to adjust myopic astigmatism (e.g., 90° axial astigmatism), adjustment sub-components 8, 9, 24, and 25 are all filled with a second fluid (e.g., gas). As the adjustment sub-components 1811 expand, they press the first elastic layer 14 toward the first light-transmitting layer 12, releasing all the second fluid from adjustment sub-components 1, 16, 17, and 32. The adjustment sub-components 1811 contract, causing the first elastic layer 14 to move away from the first light-transmitting layer 12. The middle part of the adjustment sub-components 1811 changes uniformly, making the surface of the adjustment sub-components 181 facing the first elastic layer 14 change uniformly. At this time, the first surface 11 of the first elastic layer 14 will form a smooth cylindrical curved surface, which can correct refractive errors in simple myopic astigmatism. By changing the amount of the second fluid (such as gas) within each adjustment component 1811 (such as an elastic air bladder), the shape of the first surface 11 portions of the first elastic layer 14 can be arbitrarily adjusted, thereby adjusting the astigmatism degree and even switching from a purely myopic astigmatism adjustment state to a purely hyperopic astigmatism adjustment state. Furthermore, since each individual's astigmatism degree also has an axis difference, this technical solution can also achieve arbitrary changes in the astigmatism axis.

[0106] Optionally, the second fluid can be a gas or a liquid. When the second fluid is a gas, the first actuator 183 is a miniature air pump. When the second fluid is a liquid, the first actuator 183 can be a miniature liquid pump or a miniature pump. A "miniature air pump" refers to a small-sized gas delivery device that uses a gaseous working medium and is mainly used for various purposes such as gas sampling, gas circulation, vacuum adsorption, vacuum pressure holding, evacuation, aeration, and pressurization.

[0107] Optionally, the number of first actuators 183 can be one or more, and the number of first actuators 183 is less than or equal to the number of adjusting sub-components 1811. When there is only one first actuator 183, the first actuator 183 is connected to each first valve 185; when there are multiple first actuators 183, each first actuator 183 is connected to multiple adjusting sub-components 1811, and different first actuators 183 are connected to different adjusting sub-components 1811. The multiple first actuators 183 cooperate to adjust the height of the multiple adjusting sub-components 1811. The fewer the number of first actuators 183, the more beneficial it is to the thinner and lighter lens module 100, but the lower the adjustment efficiency when the first lens assembly 10 performs astigmatism adjustment. The more first actuators 183, the higher the adjustment efficiency when the first lens assembly 10 performs astigmatism adjustment, but the thinner and lighter lens module 100 is not conducive to this.

[0108] For example, when there are two first actuators 183 and 32 regulating sub-components 1811, one first actuator 183 is connected to 16 of the regulating sub-components 1811, and the other first actuator 183 is connected to the remaining 16 regulating sub-components 1811. As another example, when there are four first actuators 183 and 32 regulating sub-components 1811, each first actuator 183 is connected to eight regulating sub-components 1811, and different first actuators 183 are connected to different regulating sub-components 1811.

[0109] Optionally, the first valve 185 may be, but is not limited to, a miniature electrically controlled valve, a miniature solenoid valve, etc.

[0110] Optionally, multiple adjustment sub-components 1811 are closely arranged on the surface of the first elastic layer 14 away from the first light-transmitting layer 12, and form a ring structure.

[0111] Optionally, the plurality of adjustment sub-components 1811 are spaced apart from the outer periphery of the first elastic layer 14, so that when the first lens assembly 10 is assembled to the carrier of the wearable device, the portion of the first elastic layer 14 from the adjustment sub-components 1811 to the outer periphery can tightly fit against the inner wall of the carrier. Optionally, the distance between the adjustment sub-components 1811 and the outer periphery of the first elastic layer 14 ranges from 1 mm to 5 mm; specifically, it can be, but is not limited to, 1 mm, 1.5 mm, 2 mm, 2.5 mm, 3 mm, 3.5 mm, 4 mm, 4.5 mm, 5 mm, etc.

[0112] Optionally, each adjustment component 1811 can be bonded to the first elastic layer 14 by means of hot melt adhesive, UV adhesive, optical adhesive (OCA adhesive), etc.

[0113] Optionally, the number of adjustment sub-components 1811 is greater than or equal to 24. Further, the number of adjustment sub-components 1811 ranges from 24 to 128; specifically, it can be, but is not limited to, 24, 28, 32, 36, 40, 44, 48, 56, 64, 72, 80, 88, 96, 104, 112, 120, 128, etc. The more adjustment sub-components 1811 there are, the higher the adjustment accuracy of the astigmatism power of the first lens assembly 10; however, a higher number also makes the process more complex.

[0114] The dimensions of the multiple adjusting sub-components 1811 may be the same or different, and this application does not specifically limit this. When the dimensions of the multiple adjusting sub-components 1811 are the same, as shown in the relevant side view... Figure 11 The width of the middle adjusting component 1811 is larger, while the width of the adjusting components 1811 at both ends gradually decreases. Figure 11 In the side view, for ease of illustration, each adjustment sub-component 1811 has the same width, which should not be construed as a limitation on the adjustment sub-component 1811 of this application.

[0115] Optionally, the material of the adjusting component 1811 may be, but is not limited to, at least one of polydimethylsiloxane (PDMS), polycarbonate (PC), polymethyl methacrylate (PMMA), and polyethylene terephthalate (PET).

[0116] Optionally, the material of the adjusting component 1811 may include, but is not limited to, at least one of polydimethylsiloxane (PDMS), polycarbonate (PC), polymethyl methacrylate (PMMA), and polyethylene terephthalate (PET).

[0117] Optionally, the wall thickness of the elastic balloon ranges from 0.01 mm to 0.3 mm, specifically, it can be, but is not limited to, 0.01 mm, 0.05 mm, 0.1 mm, 0.15 mm, 0.2 mm, 0.25 mm, 0.3 mm, etc. If the elastic balloon wall thickness is too thin, it affects the lifespan of the first lens assembly 10 and is detrimental to the stability of the astigmatism power of the first lens assembly 10. If the elastic balloon wall thickness is too thick, it increases the thickness and weight of the first lens assembly 10, which is detrimental to the thinning and lightening of the lens module 100.

[0118] In the embodiments of this application, when referring to the numerical range a to b, unless otherwise specified, it means that the endpoint value a is included and the endpoint value b is included. For example, the wall thickness of the elastic balloon is in the range of 0.01mm to 0.3mm, which means that the wall thickness of the elastic balloon can be any value between 0.01mm and 0.3mm, including the endpoint 0.01mm and the endpoint 0.3mm.

[0119] In some embodiments, along the stacking direction of the first light-transmitting layer 12, the first elastic layer 14, and the adjusting member 181, the adjustable height h of each adjusting sub-member 1811 is in the range of 0.2mm ≤ h ≤ 3mm. Specifically, the adjustable height h of each adjusting sub-member 1811 can be, but is not limited to, 0.2mm, 0.4mm, 0.6mm, 0.8mm, 1.0mm, 1.2mm, 1.4mm, 1.6mm, 1.8mm, 2.0mm, 2.2mm, 2.4mm, 2.6mm, 2.8mm, and 3.0mm. The smaller the adjustable height of the adjusting sub-member 1811, the smaller the astigmatism correction of the first lens assembly 10; the higher the adjustable height of the adjusting sub-member 1811, the higher the astigmatism correction of the first lens assembly 10. However, when the adjustable height of the adjusting sub-member 1811 exceeds a certain value, it will increase the thickness of the first lens assembly 10, which is not conducive to the miniaturization of the lens module 100.

[0120] Please see again Figure 9 and Figure 13 In some embodiments, the second lens assembly 30 includes: a second light-transmitting layer 33, a support layer 32, a second elastic layer 34, a third fluid 36, and a driving mechanism 38. The support layer 32 is disposed on the side of the second light-transmitting layer 33 away from the first elastic layer 14, and the second elastic layer 34 is disposed on the side of the support layer 32 opposite to the second light-transmitting layer 33. The second light-transmitting layer 33, the support layer 32, and the second elastic layer 34 form a second receiving cavity 301, and the surface of the second elastic layer 34 opposite to the second light-transmitting layer 33 is the second surface 31. The third fluid 36 is at least partially disposed within the second receiving cavity 301. The driving mechanism 38 is used to adjust the amount of the third fluid 36 within the second receiving cavity 301 to adjust the curvature of the second elastic layer 34, thereby adjusting the focal length of the second lens assembly 30 to adjust the myopia or hyperopia of the second lens assembly 30.

[0121] Optionally, when the second lens assembly 30 is in the initial state, the second elastic layer 34 is in a planar state, and the second lens assembly 30 does not have myopia or hyperopia.

[0122] Optionally, the first light-transmitting layer 12 and the second light-transmitting layer 33 can be two layers, bonded together by a light-transmitting adhesive (e.g., ...). Figure 13 (As shown). The second light-transmitting layer 12 and the second light-transmitting layer 33 can also be the same layer (e.g. Figure 9 (As shown). In other words, the first lens assembly 10 and the second lens assembly 30 share a light-transmitting layer. The light-transmitting layer is part of both the first lens assembly 10 and the second lens assembly 30. It can also be understood that the first lens assembly 10 and the second lens assembly 30 are an integrated structure. When the first lens assembly 10 and the second lens assembly 30 are formed independently and then superimposed, the light-transmitting layers of the two lens assemblies are independent. This not only increases the weight and thickness of the lens module 100, but also requires strict control of the parallelism of the second light-transmitting layer 33 of the first lens assembly 10 and the second lens assembly 30 during assembly. Otherwise, additional reflected light will enter the eye between the first lens assembly 10 and the second lens assembly 30, causing discomfort and deviating from the corrective effect. Therefore, to ensure that the first lens assembly 10 and the second lens assembly 30 are completely parallel, higher installation and frame precision are required, significantly increasing cost and manufacturing difficulty. The first lens assembly 10 and the second lens assembly 30 share a light-transmitting layer, which not only makes the lens module 100 thinner and lighter, but also reduces assembly difficulty and better prevents additional reflected light from entering the human eye between the first lens assembly 10 and the second lens assembly 30, thus avoiding discomfort and improving the refractive correction effect. In addition, it allows the first lens assembly 10 and the second lens assembly 30 to form an integrated structure.

[0123] Optionally, initially, the second elastic layer 34 is in a relaxed state (in other words, a state without elastic deformation; or in other words, a state that is neither stretched nor compressed and has no elastic restoring force; at this time, the second elastic layer 34 is in a planar state), and the third fluid 36 fills the entire second receiving cavity 301. Figure 14As shown, when the second lens assembly 30 is used as a myopia lens, a portion of the third fluid 36 is drawn from the second receiving cavity 301 by the drive mechanism 38, causing the second elastic layer 34 to be concave inward (towards the direction closer to the second light-transmitting layer 33), forming a concave lens. The more third fluid 36 is drawn out, the greater the degree of concavity of the second elastic layer 34, the smaller the radius of curvature of the second elastic layer 34, the greater the curvature, and the greater the myopia. When the target myopia is reached, the drive mechanism 38 is turned off to maintain the current myopia of the second lens assembly 30. When it is necessary to return to the initial state or reduce the myopia, the third fluid 36 is injected into the second receiving cavity 301 by the drive mechanism 38, increasing the amount of third fluid 36 in the second receiving cavity 301, decreasing the degree of concavity of the second elastic layer 34, increasing the radius of curvature of the second elastic layer 34, decreasing the curvature, and reducing the myopia. When the target myopia is reached, the drive mechanism 38 is turned off to maintain the current myopia.

[0124] Conversely, such as Figure 15 As shown, when the second lens assembly 30 is used as a hyperopic lens, a third fluid 36 is injected into the second receiving cavity 301 via the drive mechanism 38, causing the second elastic layer 34 to bulge outward (in the direction away from the second light-transmitting layer 33), forming a convex lens. The more third fluid 36 injected, the greater the bulge of the second elastic layer 34, the smaller the radius of curvature of the second elastic layer 34, and the greater the hyperopic power. When the target power is reached, the drive mechanism 38 is turned off to maintain the current power of the second lens assembly 30. When it is necessary to return to the initial state or reduce the hyperopic power, a portion of the third fluid 36 in the second receiving cavity 301 is extracted via the drive mechanism 38, reducing the amount of third fluid 36 in the second receiving cavity 301, decreasing the bulge of the second elastic layer 34, increasing the radius of curvature of the second elastic layer 34, and reducing the hyperopic power. When the target power is reached, the drive mechanism 38 is turned off to maintain the current power.

[0125] Optionally, the support layer 32 is a support frame. Optionally, the support layer 32 has a through hole, and the second light-transmitting layer 33 and the second elastic layer 34 are respectively disposed on opposite sides of the support layer 32, and respectively close the two opposite openings of the through hole to seal the through hole and form a second receiving cavity 301.

[0126] Optionally, the material of the support layer 32 may include, but is not limited to, at least one of polycarbonate (PC), polymethyl methacrylate (PMMA), polyethylene terephthalate (PET).

[0127] Optionally, the thickness of the support layer 32 ranges from 1 mm to 5 mm. That is, along the stacking direction of the second light-transmitting layer 33, the support layer 32, and the second elastic layer 34, the thickness of the support layer 32 is from 1 mm to 5 mm. Specifically, the thickness of the support layer 32 can be, but is not limited to, 1 mm, 1.5 mm, 2 mm, 2.5 mm, 3 mm, 3.5 mm, 4 mm, 4.5 mm, 5 mm, etc.

[0128] For a detailed description of the second light-transmitting layer 33, please refer to the description of the first light-transmitting layer 12, which will not be repeated here.

[0129] In some embodiments, the elastic modulus E3 of the second elastic layer 34 is in the range of 10 MPa ≤ E3 ≤ 100 MPa; specifically, the elastic modulus E3 of the second elastic layer 34 can be, but is not limited to, 10 MPa, 20 MPa, 30 MPa, 40 MPa, 50 MPa, 60 MPa, 70 MPa, 80 MPa, 90 MPa, 100 MPa, etc. The elastic modulus of the second elastic layer 34 should not be too large or too small. If the elastic modulus of the second elastic layer 34 is too large, it increases the difficulty of adjusting the myopia or hyperopia (i.e., focal length) of the second lens assembly 30. If the elastic modulus of the second elastic layer 34 is too small, the second elastic layer 34 is more significantly affected by external forces such as gravity. For example, during movement, due to inertia, the second elastic layer 34 deforms, making it difficult to maintain the shape of the second surface 31 of the second elastic layer 34, thus affecting the adjustment of the myopia or hyperopia of the second lens assembly 30.

[0130] Optionally, the second elastic layer 34 is light-transmitting, and the light transmittance of the second elastic layer 34 is greater than or equal to 85%. Further, the light transmittance of the second elastic layer 34 is greater than or equal to 90%. Further still, the light transmittance of the second elastic layer 34 is greater than or equal to 95%. Specifically, the light transmittance of the second elastic layer 34 can be, but is not limited to, 85%, 88%, 90%, 91%, 92%, 93%, 94%, 95%, 96%, 97%, 98%, 99%, etc. The higher the light transmittance of the second elastic layer 34, the better the visual effect of the lens module 100.

[0131] Optionally, the material of the second elastic layer 34 may be, but is not limited to, at least one of polydimethylsiloxane (PDMA), polymethyl methacrylate (PMMA), polycarbonate (PC), and polyethylene terephthalate (PET). These materials are generally translucent, which can make the overall color uniformity of the lens module 100 better and give it a better appearance. The material of the second elastic layer 34 may be the same as or different from that of the first elastic layer 14, and this application does not make a specific limitation. When the material of the second elastic layer 34 is the same as that of the first elastic layer 14, the lens module 100 has a better visual effect.

[0132] Optionally, along the stacking direction of the second elastic layer 34 and the second light-transmitting layer 33, the thickness of the second elastic layer 34 ranges from 50 μm to 300 μm. Further, the thickness of the second elastic layer 34 ranges from 100 μm to 200 μm. Specifically, the thickness of the second elastic layer 34 can be, but is not limited to, 50 μm, 60 μm, 70 μm, 80 μm, 100 μm, 120 μm, 150 μm, 180 μm, 200 μm, 220 μm, 250 μm, 280 μm, 300 μm, etc. If the second elastic layer 34 is too thin, it is prone to complete depression when the driving mechanism 38 extracts the third fluid 36 from the second receiving cavity 301, making it difficult to obtain an ideal curvature; if the second elastic layer 34 is too thick, it is difficult to deform, and the power provided by the driving mechanism 38 is insufficient to deform the second elastic layer 34.

[0133] In some embodiments, the refractive index n1' of the second light-transmitting layer 33, the refractive index n4 of the second elastic layer 34, and the refractive index n5 of the third fluid 36 satisfy the following relationship:

[0134] 0.95≤n1' / n4≤1.05;

[0135] 0.95≤n1' / n5≤1.05;

[0136] 0.95≤n4 / n5≤1.05.

[0137] Specifically, n1 / n4 can be, but is not limited to, 0.95, 0.96, 0.97, 0.98, 0.99, 1.01, 1.02, 1.03, 1.04, 1.05, etc. n1 / n5 can be, but is not limited to, 0.95, 0.96, 0.97, 0.98, 0.99, 1.01, 1.02, 1.03, 1.04, 1.05, etc. n4 / n5 can be, but is not limited to, 0.95, 0.96, 0.97, 0.98, 0.99, 1.01, 1.02, 1.03, 1.04, 1.05, etc.

[0138] The closer the refractive indices n1 of the second light-transmitting layer 33, n4 of the second elastic layer 34, and n5 of the third fluid 36 are, the less likely light is to be refracted when it passes through the interfaces between each pair of the second light-transmitting layer 33, the second elastic layer 34, and the third fluid 36. Therefore, the closer the refractive indices n1 of the second light-transmitting layer 33, n4 of the second elastic layer 34, and n5 of the third fluid 36 are, the better.

[0139] In one specific embodiment, the refractive index n1 of the second light-transmitting layer 33, the refractive index n4 of the second elastic layer 34, and the refractive index n5 of the third fluid 36 are equal.

[0140] Optionally, the refractive index of the third fluid 36 is greater than 1.4. Specifically, the refractive index of the first fluid 16 can be, but is not limited to, 1.4, 1.43, 1.45, 1.48, 1.50, 1.53, 1.45, 1.48, 1.60, 1.62, 1.65, 1.67, 1.7, etc. The third fluid 36 can be, but is not limited to, at least one of dimethyl silicone oil, polyethylene glycol (e.g., PEG200), etc.

[0141] Please see Figure 16 and Figure 17 In some embodiments, the drive mechanism 38 includes a second actuator 381, an elastic container 383, and a second valve 385. The second actuator 381 is connected to the second receiving cavity 301 and the elastic container 383. The valve is disposed between the elastic container 383 and the second receiving cavity 301, and is used to open or close the channel or pipeline between the second receiving cavity 301 and the elastic container 383. The third fluid 36 is also partially disposed in the elastic container 383. The second actuator 381 is used to pump fluid from the elastic container 383 into the second receiving cavity 301, and also to pump fluid from the second receiving cavity 301 into the elastic container 383. The elastic container 383 is used to contain the fluid pumped out of the second receiving cavity 301, and can also serve to return the fluid in the elastic container 383 to the second receiving cavity 301.

[0142] When the second actuator 381 and the second valve 385 are opened, and the second actuator 381 drives a portion of the third fluid 36 in the second receiving cavity 301 to flow to the elastic container 383, the amount of the third fluid 36 in the second receiving cavity 301 decreases to adjust the radius of curvature of the second elastic layer 34, thereby adjusting the focal length of the second lens assembly 30; when the second valve 385 is opened and the third fluid 36 in the elastic container 383 flows to the second receiving cavity 301, the amount of the third fluid 36 in the second receiving cavity 301 increases to adjust the radius of curvature of the second elastic layer 34, thereby adjusting the focal length of the second lens assembly 30. By cooperating with the actuator, the elastic container 383 and the second valve 385, the amount of fluid in the second receiving cavity 301 is changed, thereby realizing the change of the radius of curvature of the second elastic layer 34. This allows the second lens assembly 30 to be used for both myopia and hyperopia lenses, and it also has a wide range of focal length variation (i.e., the range of myopia and hyperopia diopters). The structure is simple and the operation is easy.

[0143] Optionally, the second valve 385 is disposed between the elastic container 383 and the second receiving cavity 301. It can be understood that the second valve 385 may be disposed on the flow path between the second receiving cavity 301 and the second actuator 381 (e.g., Figure 16 (as shown); it can also be located in the flow path between the second actuator 381 and the elastic container 383 (e.g. Figure 17 (As shown).

[0144] Optionally, when the elastic container 383 is in an expanded state, the second valve 385 opens to connect the second receiving cavity 301 and the elastic container 383. The third fluid 36 in the elastic container 383 flows to the second receiving cavity 301 under the action of the elastic restoring force of the elastic container 383. The amount of the third fluid 36 in the second receiving cavity 301 increases to adjust the radius of curvature of the second elastic layer 34, thereby realizing the adjustment of the focal length of the second lens assembly 30.

[0145] When the elastic container 383 is in a relaxed state, both the second actuator 381 and the second valve 385 are open. The second actuator 381 drives the third fluid 36 in the elastic container 383 to flow into the second receiving cavity 301, increasing the amount of the third fluid 36 in the second receiving cavity 301. This adjusts the radius of curvature of the second elastic layer 34, thereby adjusting the focal length of the second lens assembly 30. When the elastic container 383 is in an expanded state, if it is necessary to increase the amount of the third fluid 36 in the second receiving cavity 301, simply opening the second valve 385 will allow the third fluid 36 in the elastic container 383 to flow into the second receiving cavity 301 under the elastic restoring force of the elastic container 383, without requiring additional power, thus saving electricity and being convenient.

[0146] Please see again Figure 14 and Figure 16When the second lens assembly 30 is used as a concave lens (i.e., a myopia lens), both the second valve 385 and the second actuator 381 are opened. The second actuator 381 drives the third fluid 36 in the second receiving cavity 301 to flow to the elastic container 383 and store it. At this time, the amount of the third fluid 36 in the second receiving cavity 301 decreases, and the second elastic layer 34 is concave towards the second light-transmitting layer 33 to form a concave lens. The less the amount of the third fluid 36 in the second receiving cavity 301, the greater the degree of concavity of the second elastic layer 34, the smaller the radius of curvature, and the greater the myopia degree. When the target degree is reached, both the second actuator 381 and the second valve 385 are closed, thus maintaining the current degree of the second lens assembly 30. When it is necessary to restore the initial state or reduce the myopia, only the second valve 385 needs to be opened. At this time, the third fluid 36 in the elastic container 383 will be injected back into the second receiving cavity 301 under the action of the elastic force of the elastic container 383, and the myopia will decrease. After reaching the target degree, the second valve 385 can be closed. Alternatively, both the second valve 385 and the second actuator 381 can be opened. The second actuator 381 drives the liquid in the elastic container 383 to be injected back into the second receiving cavity 301, and the myopia will decrease. After reaching the target degree, both the second actuator 381 and the second valve 385 will be closed.

[0147] Please see Figure 15 and Figure 16 Similarly, when the second lens assembly 30 is used as a convex lens (i.e., a hyperopic lens), both the second valve 385 and the second actuator 381 are opened. The second actuator 381 drives the third fluid 36 in the elastic container 383 to flow into the second receiving cavity 301. The amount of third fluid 36 in the second receiving cavity 301 increases, and the second elastic layer 34 protrudes in the direction away from the second light-transmitting layer 33. The greater the degree of protrusion of the second elastic layer 34, the smaller the radius of curvature, and the greater the hyperopic power. When the target power is reached, both the second actuator 381 and the second valve 385 are closed, thus maintaining the current power of the second lens assembly 30. When it is necessary to return to the initial state or reduce the power, only the second valve 385 needs to be opened. At this time, the third fluid 36 in the second receiving cavity 301 is injected back into the elastic container 383 under the action of the elastic force of the second elastic layer 34, and the hyperopic power decreases. After the target power is reached, the second valve 385 can be closed. In addition, the second valve 385 and the second actuator 381 can both be opened, and the second actuator 381 can drive the liquid in the second receiving cavity 301 to be injected in reverse into the elastic container 383, so that the farsightedness decreases. After the target degree is reached, the second actuator 381 and the second valve 385 are both closed.

[0148] Optionally, the second actuator 381 can be, but is not limited to, a micro piezoelectric pump (hereinafter referred to as a micropump or micro liquid pump). The micro liquid pump is a piezoelectric pump that uses the piezoelectric principle to drive the movement of the third fluid 36. Since the micropump can provide a large liquid pressure, the second elastic layer 34 of the second lens assembly 30 can be completely taut, which can better counteract the influence of gravity, and can also make the visible area of ​​the second lens assembly 30 very large.

[0149] Of course, in other embodiments, the second actuator 381 may also be a driving device that drives the third fluid 36 using capillary principles or the continuous electrowetting effect of liquid metal. The second actuator 381 may also be a laser that drives the movement of the third fluid 36 or an ultrasonic device that drives the flow of the third fluid 36. The number of the second actuator 381 may be one or more. "A plurality of" means two or more.

[0150] Optionally, the elastic container 383 can be an elastic ball. Optionally, the material of the elastic container 383 may include, but is not limited to, at least one of polydimethylsiloxane (PDMS), polycarbonate (PC), polymethyl methacrylate (PMMA), and polyethylene terephthalate (PET).

[0151] Optionally, the second valve 385 can be a miniature electrically controlled valve, a miniature solenoid valve, etc.

[0152] Optionally, the second actuator 381 and the second valve 385 can be separate structures, and the second valve 385 can also be integrated into the second actuator 381.

[0153] In some embodiments, when the first surface 11 is a concave cylindrical surface or a convex cylindrical surface and the second surface 31 is a concave spherical surface, the first lens assembly 10 cooperates with the second lens assembly 30 to correct compound myopic astigmatism. By adjusting the surface shape and curvature of the first surface 11 and the second surface 31, the lens module 100 can be adapted to users with compound myopic astigmatism of different degrees.

[0154] Please see Figure 18 (a) to (c) and Figure 19 ,like Figure 18As shown in (a), in this embodiment, the focal point A of the 90° axis light and the focal point B of the 180° axis light in compound myopic astigmatism both fall in front of the retina, and their focal points do not coincide. When using the lens module 100 of this application for correction, the second surface 31 of the second lens assembly 30 can be made into a concave spherical surface. By adjusting the curvature of the second surface 31, the focal point A of the 90° axis light and the focal point B of the 180° axis light are simultaneously adjusted towards the inside of the eyeglass (i.e., towards the retina), so that the focal point A of the 90° axis light falls on the retina OO, while the focal point B of the 180° axis light falls behind the retina. Figure 18 In case (b), the astigmatism becomes simple hyperopic astigmatism. It can be corrected simply by making the first surface 11 of the first lens assembly 10 a convex cylindrical surface (i.e., the first lens assembly 10 is a convex cylindrical lens) and adjusting the curvature of the first surface 11. Figure 18 (c)

[0155] Optionally, when the second lens assembly 10 initially has no optical power, the second actuator 381 and the second valve 385 are opened. The second actuator 381 drives a portion of the third fluid 36 in the second receiving cavity 301 to flow to the elastic container 383, thereby reducing the amount of the third fluid 36 in the second receiving cavity 301. The second elastic layer 34 is recessed towards the direction of the second light-transmitting layer 33, and the curvature of the second surface 31 increases. When the curvature of the second surface 31 is adjusted so that the focal point A of the 90° axis light falls on the retina OO, while the focal point B of the 180° axis light falls behind the retina, the second actuator 381 and the second valve 385 are closed, thus maintaining the current power of the second lens assembly 30. At this time, it is also necessary to adjust the first lens assembly 10 so that the focal point B of the 180° axis light is also located on the retina OO. Specifically, both the first actuator 183 and the first valve 185 are opened, causing the height of the multiple adjustment sub-components 1811 to gradually increase from the middle position towards both ends along a direction perpendicular to the axis at 180°. This results in the surface of the adjustment sub-component 181 facing the first elastic layer 14 being a concave cylindrical surface. Under the pressure of the multiple adjustment sub-components 1811, the first elastic layer 14 deforms, and the first surface 11 becomes a convex cylindrical surface. When the curvature of the first surface 11 along the direction perpendicular to the 180° axis increases to the point where the focal point B of the 180° axis light falls on the retina, both the first actuator 183 and the first valve 185 are closed, thus maintaining the current power of the first lens assembly 10. The adjusted lens module 100 for compound myopic astigmatism in this embodiment is as follows... Figure 19 As shown.

[0156] Please see Figure 20 (a) to (c) and Figure 21When the lens module 100 is used to correct reversible myopic astigmatism, the second surface 31 of the second lens assembly 30 can be made into a concave spherical surface. By adjusting the curvature of the second surface 31, the focal points of both the 90° axis light and the 180° axis light are simultaneously adjusted towards the inside of the eyeglass (i.e., closer to the retina), so that the focal point of the 180° axis light falls on the retina, while the focal point of the 90° axis light falls in front of the retina. Figure 20 In case (b), it becomes simple myopic astigmatism. Correction can be achieved simply by making the first surface 11 of the first lens assembly 10 a concave cylindrical surface (i.e., the first lens assembly 10 is a concave cylindrical lens) and adjusting the curvature of the first surface 11. Figure 20 (c)

[0157] Optionally, when the second lens assembly 10 does not have optical power in the initial state, the second actuator 381 and the second valve 385 are opened. The second actuator 381 drives a portion of the third fluid 36 in the second receiving cavity 301 to flow to the elastic container 383, thereby reducing the amount of the third fluid 36 in the second receiving cavity 301. The second elastic layer 34 is recessed towards the direction of the second light-transmitting layer 33, and the curvature of the second surface 31 increases. When the curvature of the second surface 31 is adjusted so that the focal point A of the 180° axis light falls on the retina OO, while the focal point B of the 90° axis light falls in front of the retina, the second actuator 381 and the second valve 385 are closed, thus maintaining the current power of the second lens assembly 30. At this time, it is also necessary to adjust the first lens assembly 10 so that the focal point A of the 90° axis light is also located on the retina OO. Specifically, both the first actuator 183 and the first valve 185 are opened, causing the height of the multiple adjustment sub-components 1811 to gradually decrease from the middle position along the direction perpendicular to the 90° axis. This makes the surface of the adjustment sub-component 181 facing the first elastic layer 14 a convex cylindrical surface. Under the compression of the multiple adjustment sub-components 1811, the first elastic layer 14 deforms, and the first surface 11 becomes a concave cylindrical surface. When the curvature of the first surface 11 along the direction perpendicular to the 90° axis increases to the point that the focal point A of the 90° axis light falls on the retina, the first actuator 183 and the first valve 185 are closed, thus maintaining the current power of the first lens assembly 10. The adjusted lens module 100 for compound myopic astigmatism in this embodiment is as follows... Figure 21 As shown.

[0158] Compared to Figure 20 and Figure 21 The plan, Figure 18 and Figure 19 The proposed solution places higher demands on the myopia correction capability of the second lens assembly 30, requiring a greater curvature and thickness on the second surface 31 of the second lens assembly 30. Figure 20 and Figure 21By adjusting the scheme, the lens module 100 can have a better thickness and be thinner.

[0159] In some embodiments, when the first surface 11 is a concave cylindrical surface or a convex cylindrical surface and the second surface 31 is a convex spherical surface, the first lens assembly 10 cooperates with the second lens assembly 30 to correct compound hyperopic astigmatism. By adjusting the surface shape and curvature of the first surface 11 and the second surface 31, the lens module 100 can be adapted to users with compound hyperopic astigmatism of different myopia and astigmatism degrees.

[0160] Please see Figure 22 (a) to (c) and Figure 23 When the lens module 100 is used to correct recurrent hyperopic astigmatism, the second surface 31 of the second lens assembly 30 can be made into a convex spherical surface. By adjusting the curvature of the second surface 31, the focal points of both the 90° axis light and the 180° axis light are simultaneously adjusted towards the inside of the eyeglass (i.e., closer to the retina), so that the focal point of the 90° axis light falls on the retina, while the focal point of the 180° axis light falls in front of the retina. Figure 22 In case (b), it becomes simple myopic astigmatism. Correction can be achieved simply by making the first surface 11 of the first lens assembly 10 a concave cylindrical surface (i.e., the first lens assembly 10 is a concave cylindrical lens) and adjusting the curvature of the first surface 11. Figure 22 (c)

[0161] Optionally, when the second lens assembly 10 has no optical power in the initial state (i.e., the optical power is 0), the second actuator 381 and the second valve 385 are opened, driving a portion of the third fluid 36 in the elastic container 383 to flow into the second receiving cavity 301, thereby increasing the amount of the third fluid 36 in the second receiving cavity 301. This causes the second elastic layer 34 to bulge away from the second light-transmitting layer 33, increasing the curvature of the second surface 31. When the curvature of the second surface 31 is adjusted so that the focal point A of the 90° axis light falls on the retina OO, while the focal point B of the 180° axis light falls in front of the retina, the second actuator 381 and the second valve 385 are closed, thus maintaining the current power of the second lens assembly 30. At this time, it is also necessary to adjust the first lens assembly 10 so that the focal point B of the 180° axis light also falls on the retina OO. Specifically, both the first actuator 183 and the first valve 185 are opened, causing the height of the multiple adjustment sub-components 1811 to gradually decrease from the middle position to both ends along the direction perpendicular to the 180° axis. This makes the surface of the adjustment sub-component 181 facing the first elastic layer 14 a concave cylindrical surface. Under the compression of the multiple adjustment sub-components 1811, the first elastic layer 14 deforms, and the first surface 11 becomes a convex cylindrical surface. When the curvature of the first surface 11 along the direction perpendicular to the 180° axis increases to the point that the focal point B of the light at the 180° axis falls on the retina, both the first actuator 183 and the first valve 185 are closed, thus maintaining the current power of the first lens assembly 10. The adjusted lens module 100 for compound myopic astigmatism in this embodiment is as follows... Figure 23 As shown.

[0162] Please see Figure 24 (a) to (c) and Figure 24 In some embodiments, when the lens module 100 is used to correct recurrent hyperopic astigmatism, the second surface 31 of the second lens assembly 30 can be a convex spherical surface. By adjusting the curvature of the second surface 31, the focal points of both the 90° axis light and the 180° axis light are simultaneously adjusted towards the inside of the eyeglass (i.e., closer to the retina), so that the focal point of the 180° axis light falls on the retina, while the focal point of the 90° axis light falls behind the retina. Figure 24 In case (b), the astigmatism becomes simple hyperopic astigmatism. It can be corrected simply by making the first surface 11 of the first lens assembly 10 a convex cylindrical surface (i.e., the first lens assembly 10 is a convex cylindrical lens) and adjusting the curvature of the first surface 11. Figure 24 (c)

[0163] Optionally, when the second lens assembly 10 initially has no optical power, the second actuator 381 and the second valve 385 open, driving a portion of the third fluid 36 within the elastic container 383 to flow into the second receiving cavity 301, thereby increasing the amount of the third fluid 36 within the second receiving cavity 301. This causes the second elastic layer 34 to bulge away from the second light-transmitting layer 33, increasing the curvature of the second surface 31. When the curvature of the second surface 31 is adjusted so that the focal point A of the 180° axis light falls on the retina OO, while the focal point B of the 90° axis light falls in front of the retina, the second actuator 381 and the second valve 385 close, thus maintaining the current power of the second lens assembly 30. At this time, it is also necessary to adjust the first lens assembly 10 so that the focal point A of the 90° axis light also falls on the retina OO. Specifically, both the first actuator 183 and the first valve 185 are opened, causing the height of the multiple adjustment sub-components 1811 to gradually increase from the middle position to both ends along the direction perpendicular to the 90° axis. This makes the surface of the adjustment sub-components 181 facing the first elastic layer 14 a concave cylindrical surface. Under the compression of the multiple adjustment sub-components 1811, the first elastic layer 14 deforms, and the first surface 11 becomes a concave cylindrical surface. When the curvature of the first surface 11 along the direction perpendicular to the 90° axis increases to the point that the focal point A of the light at the 90° axis falls on the retina, the first actuator 183 and the first valve 185 are closed, thus maintaining the current power of the first lens assembly 10. The adjusted lens module 100 for compound myopic astigmatism in this embodiment is as follows... Figure 25 As shown.

[0164] Compared to Figure 24 and Figure 25 The plan, Figure 22 and Figure 23 The proposed solution places higher demands on the hyperopia correction capability of the second lens assembly 30, requiring a greater curvature and thickness on the second surface 31 of the second lens assembly 30. Figure 24 and Figure 25 By adjusting the scheme, the lens module 100 can have a better thickness and be thinner.

[0165] Please see Figure 26 In some embodiments, the lens module 100 further includes an optical waveguide assembly 50, which is stacked on the side of the first lens assembly 10 opposite to the second lens assembly 30. It can be understood that the lens module 100 includes the second lens assembly 30, the first lens assembly 10, and the optical waveguide assembly 50, which are stacked sequentially.

[0166] Optionally, each adjustment sub-component 1811 abuts against the surface of the optical waveguide assembly 50 facing the first lens assembly 10, and the surface of the optical waveguide assembly 50 facing the first lens assembly 10 supports the adjustment sub-component 181 so that the surface of the adjustment sub-component 181 facing the optical waveguide assembly 50 is always in a planar state.

[0167] In this embodiment, the optical waveguide assembly 50 can be bonded to the surface of the first lens assembly 10 facing away from the second lens assembly 30 using adhesive layers such as photocurable adhesive (e.g., UV adhesive), optical adhesive (OCA adhesive), thermosetting adhesive, hot melt adhesive, double-sided tape, and foam adhesive. When the light transmittance of the adhesive layer is greater than or equal to 85%, the adhesive layer can be a single adhesive layer or a frame. When the light transmittance of the adhesive layer is less than 85%, the adhesive layer is a frame, i.e., a hollow frame structure that matches the visible area of ​​the lens module 100.

[0168] Please see Figure 27 In other embodiments, the lens module 100 further includes an optical waveguide assembly 50, which is stacked on the side of the second lens assembly 30 opposite to the first lens assembly 10. It can be understood that the lens module 100 includes a first lens assembly 10, a second lens assembly 30, and an optical waveguide assembly 50 stacked sequentially.

[0169] By integrating the optical waveguide assembly 50, the first lens assembly 10, and the second lens assembly 30 together, the lens module 100 can simultaneously have multiple functions such as augmented reality, myopia correction, hyperopia correction, and astigmatism correction. In addition, when applied to wearable devices, compared with a separate design, the size of the lenses in the wearable device can be greatly reduced, making them thinner and lighter, more comfortable to wear, and with a better appearance.

[0170] In this embodiment, the optical waveguide component 50 can be bonded to the surface of the second lens component 30 facing away from the first lens component 10 using adhesive layers such as photocurable adhesive (e.g., UV adhesive), optical adhesive (OCA adhesive), thermosetting adhesive, hot melt adhesive, double-sided tape, or foam adhesive. When the light transmittance of the adhesive layer is greater than or equal to 85%, the adhesive layer can be a single adhesive layer or a frame. When the light transmittance of the adhesive layer is less than 85%, the adhesive layer is a frame, i.e., a hollow frame structure that matches the visible area of ​​the lens module 100.

[0171] Please see Figure 28 and Figure 29 In some embodiments, the optical waveguide assembly 50 includes a first protective sheet 51, an optical waveguide sheet 53, and a second protective sheet 55 stacked sequentially and spaced apart. The first protective sheet 51 is disposed opposite to the first lens assembly 10 relative to the second protective sheet 55. The first protective sheet 51 and the second protective sheet 55 are used to protect the optical waveguide sheet 53.

[0172] Please see Figure 30 Optionally, the optical waveguide 53 includes an optical transmission section 531, an optical input section 533, and an optical output section 535. The optical input section 533 and the optical output section 535 are spaced apart on the surface of the optical transmission section 531 facing the first protective sheet 51. The optical input section 533 is used to receive the optical signal entering the optical waveguide 53 and couple the optical signal into the optical transmission section 531; the optical transmission section 531 is used to transmit the optical signal; the optical output section 535 is used to receive the optical signal transmitted by the optical transmission section 531 and couple the optical signal out of the optical waveguide 53. The optical output section 535 can also be used to perform one-dimensional or two-dimensional pupil expansion on the optical signal. The optical waveguide 53 has poor strength and is easily broken when dropped or impacted. By providing a first protective sheet 51 and a second protective sheet 55 on two opposite surfaces of the optical waveguide 53, the optical waveguide 53 can be effectively protected and its lifespan improved.

[0173] Optionally, the optical waveguide 53 can be, but is not limited to, a geometric waveguide or a diffractive waveguide. The diffractive waveguide can be a surface relief diffractive waveguide or a volumetric diffractive waveguide.

[0174] Optionally, when the optical waveguide 53 is a diffractive optical waveguide 53, the optical coupling inlet 533 is an insertion grating, and the optical coupling outlet 535 is an output grating. In some embodiments, when the optical waveguide 53 is a diffractive optical waveguide 53, the optical waveguide 53 further includes a bend grating, and the bend grating, the optical coupling inlet 533, and the optical coupling outlet 535 are all disposed on the same surface of the optical transmission section 531. When the optical waveguide 53 is a geometric optical waveguide 53, the optical coupling inlet 533 is a reflective surface or a reflective prism, and the optical coupling outlet 535 is a "semi-transparent and semi-reflective" mirror array.

[0175] Optionally, both the first protective sheet 51 and the second protective sheet 55 can be bonded to the opposite sides of the optical waveguide sheet 53 using adhesive frames with adhesive properties such as photocurable adhesive (e.g., UV adhesive), optical adhesive (OCA adhesive), thermosetting adhesive, hot melt adhesive, double-sided adhesive, and foam adhesive. Furthermore, the adhesive frames can also space the first protective sheet 51 and the second protective sheet 55 from the optical waveguide sheet 53, forming air layers. It should be noted that the adhesive frames are located at the outer periphery of the first protective sheet 51 and the second protective sheet 55.

[0176] Optionally, the material of the first protective sheet 51 includes at least one of polymethyl methacrylate (PMMA), polycarbonate (PC), polyethylene terephthalate (PET), tempered glass, sapphire, etc.

[0177] Optionally, the material of the second protective sheet 55 includes at least one of polymethyl methacrylate (PMMA), polycarbonate (PC), polyethylene terephthalate (PET), tempered glass, sapphire, etc.

[0178] Please see Figure 31 This application also provides a wearable device 200, which includes the lens module 100 described in this application.

[0179] The wearable device 200 in this application embodiment can be, but is not limited to, myopia glasses, hyperopia glasses, smart glasses, augmented reality glasses (AR glasses), augmented reality helmets, augmented reality masks, etc.

[0180] Optionally, the number of lens modules 100 can be one or two. For example, when the wearable device 200 is one of myopia glasses, hyperopia glasses, smart glasses, augmented reality glasses (AR glasses), etc., the number of lens modules is two. When the wearable device 200 is one of augmented reality helmets, augmented reality masks, etc., the number of lens modules can be one or two.

[0181] For a detailed description of the lens module 100, please refer to the description of the corresponding part of the above embodiment, which will not be repeated here.

[0182] Please see Figures 32 to 34 In some embodiments, the wearable device 200 further includes a carrier 210 for carrying the lens module 100, the carrier 210 having an accommodating space 201 for accommodating the lens module 100.

[0183] Optionally, the support member 210 includes a support portion 211, a first support portion 213, and a second support portion 215. The support portion 211 has a through groove. The first support portion 211 and the second support portion 211 are spaced apart in the through groove and are bent and connected to the support portion 211 respectively. The support portion 211, the first support portion 213, and the second support portion 215 enclose the accommodating space 201.

[0184] Optionally, the support member 210 can be, but is not limited to, a frame for nearsighted glasses, a frame for farsighted glasses, a frame for smart glasses, a frame for augmented reality glasses (AR glasses), a mask body for augmented reality masks, a helmet body for augmented reality helmets, and other support structures.

[0185] Optionally, the second light-transmitting layer 33 and the carrier 210 can be bonded together using hot melt adhesive, UV adhesive, optical adhesive (OCA adhesive), etc.

[0186] Optionally, the wearable device 200 may include one or two lens modules 100. When the wearable device 200 has two lens modules 100, the carrier 210 also has two accommodating spaces 201, which are spaced apart.

[0187] Please see Figure 32 In other embodiments, the lens module 100 includes a second lens assembly 30, a first lens assembly 10, and an optical waveguide assembly 50 stacked sequentially. When the lens module 100 is assembled to the carrier 210, the outer periphery of the second light-transmitting layer 33 is bonded to the inner wall of the support portion 211 of the carrier 210 using hot melt adhesive, UV adhesive, or optical adhesive (OCA adhesive). The surface of each adjustment sub-component 1811 facing the inner wall of the support portion 211 is bonded to the inner wall of the support portion 211 using hot melt adhesive, UV adhesive, or optical adhesive (OCA adhesive). The surfaces of the multiple adjustment sub-components 1811 facing the optical waveguide assembly 50 abut against the second protective sheet 55 of the optical waveguide assembly 50. The optical waveguide assembly 50 supports the adjustment sub-components 181, ensuring that the surface of the adjustment sub-components 181 facing the optical waveguide assembly 50 is planar during astigmatism adjustment. Understandably, multiple adjustment components 1811 are arranged sequentially around the inner wall of the support portion 211, and each adjustment component 1811 is fitted to the inner wall of the support portion 211.

[0188] Please see Figure 33 In other embodiments, the lens module 100 includes a first lens assembly 10, a second lens assembly 30, and an optical waveguide assembly 50 stacked sequentially. The first lens assembly 10 is positioned closer to the first support portion 213 than the second lens assembly 30. When the lens module 100 is assembled to the support portion 210, the outer periphery of the second light-transmitting layer 33 is bonded to the inner wall of the support portion 211 of the support portion 210 using hot melt adhesive, UV adhesive, or optical adhesive (OCA adhesive). The surface of each adjustment sub-component 1811 facing the inner wall of the support portion 211 is bonded to the inner wall of the support portion 211 using hot melt adhesive, UV adhesive, or optical adhesive (OCA adhesive). The surfaces of multiple adjustment sub-components 1811 facing the inner wall of the first support portion 213 abut against the first support portion 213, and the first support portion 213 supports the adjustment sub-components 181 so that the surface of the adjustment sub-components 181 facing the first support portion 213 is planar during astigmatism adjustment. Understandably, multiple adjustment components 1811 are arranged sequentially around the inner wall of the support portion 211, and each adjustment component 1811 is fitted to the inner wall of the support portion 211.

[0189] Please see Figure 35 In some embodiments, the lens module 100 includes only a first lens assembly 10 and a second lens assembly 30. The first lens assembly 10 is disposed near the first support portion 213, and the second lens assembly 30 is disposed near the second support portion 215. When the lens module 100 is assembled to the support member 210, the outer periphery of the second light-transmitting layer 33 is bonded to the inner wall of the support portion 211 of the support member 210 using hot melt adhesive, UV adhesive, optical adhesive (OCA adhesive), etc. The surface of each adjustment sub-component 1811 facing the inner wall of the support portion 211 is bonded to the inner wall of the support portion 211 using hot melt adhesive, UV adhesive, optical adhesive (OCA adhesive), etc. The surfaces of multiple adjustment sub-components 1811 facing the inner wall of the first support portion 213 abut against the first support portion 213, and the first support portion 213 supports the adjustment sub-components 181 so that the surface of the adjustment sub-components 181 facing the first support portion 213 is flat during astigmatism adjustment. Understandably, multiple adjustment components 1811 are arranged sequentially around the inner wall of the support portion 211, and each adjustment component 1811 is fitted to the inner wall of the support portion 211.

[0190] Please see again Figure 31 In some embodiments, the wearable device 200 of this application further includes a wearing member 230. The wearing member 230 is rotatably connected to the support member 210, and the wearing member 230 is used to hold a target object (such as a human head or a head prosthesis).

[0191] Optionally, the wearable component 230 includes a first wearable component 231 and a second wearable component 233. The first wearable component 231 is rotatably connected to one end of the carrier 210, and the second wearable component 233 is rotatably connected to the other end of the carrier 210 away from the first wearable component 231. The first wearable component 231 and the second wearable component 233 cooperate to clamp the wearable device 200 onto a target object. Optionally, the first wearable component 231 and the second wearable component 233 are also used to house the first actuator 183 and the drive mechanism 38.

[0192] Optionally, both the first wearing member 231 and the second wearing member 233 can be, but are not limited to, temples of myopia glasses, temples of hyperopia glasses, temples of smart glasses, or temples of augmented reality glasses (AR glasses).

[0193] Please see Figure 36In some embodiments, the wearable device 200 is an augmented reality device, such as augmented reality glasses. The wearable device 200 further includes a projection optical engine 250, which includes a display 251 and a lens 253. The display 251 is used to emit light signals toward the lens 253, and the lens 253 is used to modulate the light signals and project the modulated light signals into the optical waveguide 53.

[0194] Optionally, the display 251 can be a microdisplay. The display 251 may include, but is not limited to, at least one of a micro light-emitting diode (Micro LED) chip, a micro organic light-emitting diode (Micro OLED) chip, or a micro liquid crystal display (Micro LCD). Under the same operating power conditions, the brightness of a Micro OLED is typically less than 5000 nits, and the brightness of an LCD is typically less than 15000 nits, while the brightness of a Micro LED can reach 2,000,000 nits, far exceeding the former two. Therefore, compared to Micro OLED and Micro LCD displays, when the display 251 is a Micro LED display, its output image has higher brightness. Compared to Micro LCD displays, Micro LED displays are self-emissive light sources, and when applied to the projection engine 250, they offer better contrast and lower display latency.

[0195] Optionally, the color of the light emitted by the display 251 can be, but is not limited to, at least one of red, green, and blue light. In one specific embodiment, the display 251 is a Micro LED that emits green light; in other embodiments, it can also be other monochromatic or polychromatic Micro LEDs.

[0196] Optionally, lens 253 is a miniature projection lens, which is used to modulate the light signal (including image information) emitted from display 251, so that the light rays emitted from different viewing angles from the same pixel are emitted in the form of parallel light after being modulated by lens 253, so that the image information in the light signal is at an infinity position so that it can be seen by the naked eye.

[0197] Please see Figure 37The wearable device 200 in this embodiment further includes a processor 270 and a memory 290. The processor 270 is electrically connected to the display 251 and is used to control the display 251 to emit light signals with image information, etc. The memory 290 is electrically connected to the processor 270 and is used to store the program code required for the processor 270 to run, the program code required to control the display 251, the image information emitted by the display 251, etc.

[0198] Optionally, processor 270 includes one or more general-purpose processors, wherein the general-purpose processor can be any type of device capable of processing electronic instructions, including a central processing unit (CPU), microprocessor, microcontroller, main processor, controller, and ASIC, etc. Processor 270 is used to execute various types of digital storage instructions, such as software or firmware programs stored in memory 290, which enables the computing device to provide a wide range of services.

[0199] Optionally, memory 290 may include volatile memory, such as random access memory (RAM); memory 290 may also include non-volatile memory (NVM), such as read-only memory (ROM), flash memory (FM), hard disk drive (HDD), or solid-state drive (SSD). Memory 290 may also include combinations of the above types of memory.

[0200] It is understood that the wearable device 200 described in this embodiment is merely one form of the wearable device 200 used in the lens module 100, and should not be construed as a limitation on the wearable device 200 provided in this application, nor should it be construed as a limitation on the lens module 100 provided in various embodiments of this application.

[0201] In this application, the terms "embodiment" and "implementation" mean that a specific feature, structure, or characteristic described in connection with an embodiment can be included in at least one embodiment of this application. The appearance of these phrases in various locations throughout the specification does not necessarily refer to the same embodiment, nor are they independent or alternative embodiments mutually exclusive with other embodiments. Those skilled in the art will understand, explicitly and implicitly, that the embodiments described in this application can be combined with other embodiments. Furthermore, it should be understood that the features, structures, or characteristics described in the various embodiments of this application can be arbitrarily combined to form another embodiment that does not depart from the spirit and scope of the technical solution of this application, provided there is no contradiction between them.

[0202] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to the above preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions to the technical solutions of this application should not depart from the spirit and scope of the technical solutions of this application.

Claims

1. A lens module, characterized in that, include: A first lens assembly having a first surface whose curvature is adjustable to adjust the astigmatism power of the first lens assembly. as well as The second lens assembly is disposed on the side of the first lens assembly opposite to the first surface. The second lens assembly has a second surface opposite to the first lens assembly, and the curvature of the second surface is adjustable so that the myopia or hyperopia power of the second lens assembly is adjustable. The first lens assembly includes: First light-transmitting layer; A first elastic layer is disposed on one side of the first light-transmitting layer and forms a first receiving cavity with the first light-transmitting layer. The surface of the first elastic layer that faces away from the first light-transmitting layer is the first surface. A first fluid, the first fluid being sealed within the first receiving cavity; and An adjustment mechanism includes an adjustment member disposed on the surface of the first elastic layer opposite to the first light-transmitting layer. The adjustment member includes multiple adjustment sub-components arranged sequentially to form a ring structure. The height of the multiple adjustment sub-components is adjustable along the stacking direction of the first light-transmitting layer, the first elastic layer, and the adjustment member. When the height of the multiple adjustment sub-components changes according to a preset rule, the multiple adjustment sub-components respectively press the first elastic layer to deform the first elastic layer and make the first surface cylindrical. The curvature of the cylindrical surface is adjustable so that the astigmatism power of the first lens assembly is adjustable.

2. The lens module according to claim 1, characterized in that, The first surface is a concave cylindrical surface or a convex cylindrical surface, and the second surface is a concave spherical surface or a convex spherical surface.

3. The lens module according to claim 2, characterized in that, When the first surface is a concave cylindrical surface or a convex cylindrical surface and the second surface is a concave spherical surface, the first lens assembly and the second lens assembly cooperate to correct reversible myopic astigmatism; when the first surface is a concave cylindrical surface or a convex cylindrical surface and the second surface is a convex spherical surface, the first lens assembly and the second lens assembly cooperate to correct reversible hyperopic astigmatism.

4. The lens module according to claim 1, characterized in that, The first lens assembly is a cylindrical lens, and the first lens assembly has an axis, the direction of which is adjustable.

5. The lens module according to claim 1, characterized in that, The first lens assembly is a cylindrical lens. The first lens assembly has an axis. The adjustable radius of curvature R1 of the first surface in a direction perpendicular to the axis is in the range of R1≥0.065m. The adjustable radius of curvature R2 of the second surface is in the range of R2≥0.065m.

6. The lens module according to claim 1, characterized in that, When the height of the plurality of adjusting components changes according to a preset pattern, such that the surface of the adjusting component facing the first elastic layer is a concave cylindrical surface, the plurality of adjusting components press the first elastic layer, causing the first elastic layer to deform, so that the first surface of the first elastic layer is a convex cylindrical surface. When the height of the plurality of adjusting sub-components changes according to a preset pattern, such that the surface of the adjusting sub-component facing the first elastic layer is a convex cylindrical surface, the plurality of adjusting sub-components squeeze the first elastic layer to deform it, so that the first surface of the first elastic layer is a concave cylindrical surface.

7. The lens module according to claim 1, characterized in that, The multiple adjustment sub-components include a first adjustment sub-component and a second adjustment sub-component arranged opposite to each other, and a third adjustment sub-component and a fourth adjustment sub-component arranged opposite to each other, wherein the line connecting the first adjustment sub-component and the second adjustment sub-component intersects the line connecting the third adjustment sub-component and the fourth adjustment sub-component. The heights of the plurality of adjustment sub-components exhibit the same trend in the directions from the third adjustment sub-component to the first adjustment sub-component, from the third adjustment sub-component to the second adjustment sub-component, from the fourth adjustment sub-component to the first adjustment sub-component, and from the fourth adjustment sub-component to the second adjustment sub-component; the trend is either gradually increasing or gradually decreasing.

8. The lens module according to any one of claims 1-7, characterized in that, The adjustment mechanism further includes: The first actuator is used to adjust the volume of each of the adjustment sub-components according to a preset rule, thereby adjusting the height of the plurality of adjustment sub-components along the stacking direction of the first light-transmitting layer, the first elastic layer and the adjustment components.

9. The lens module according to claim 8, characterized in that, The adjusting sub-component is an elastic balloon, and the adjusting mechanism further includes a second fluid and a plurality of first valves; the second fluid is located inside the adjusting sub-component; each first valve is connected to one adjusting sub-component, and different first valves are connected to different adjusting sub-components; the first actuator is connected to the plurality of first valves; when the first actuator and the plurality of first valves are all open, the first actuator is used to adjust the amount of the second fluid inside the plurality of adjusting sub-components to adjust the volume of the adjusting sub-components, thereby causing the height of the plurality of adjusting sub-components to change according to a preset rule, thereby realizing the adjustment of the astigmatism power of the first lens assembly.

10. The lens module according to claim 1, characterized in that, The first lens assembly satisfies one or more of the following conditions: Along the stacking direction of the first light-transmitting layer, the first elastic layer, and the adjusting component, the adjustable height h of each adjusting sub-component is in the range of 0.2mm≤h≤3mm; or, The refractive index n1 of the first light-transmitting layer, the refractive index n2 of the first elastic layer, and the refractive index n3 of the first fluid satisfy the following relationship: 0.95≤n1 / n2≤1.05; 0.95≤n1 / n3≤1.05; 0.95≤n2 / n3≤1.

05.

11. The lens module according to claim 1, characterized in that, The second lens assembly includes: The second light-transmitting layer is the same as the first light-transmitting layer; A support layer is disposed on the side of the second light-transmitting layer away from the first elastic layer; The second elastic layer is disposed on the side of the support layer away from the second light-transmitting layer. The second light-transmitting layer, the support layer and the second elastic layer form a second receiving cavity. The surface of the second elastic layer away from the second light-transmitting layer is the second surface. A third fluid, at least partially disposed within the second receiving cavity; and A driving mechanism is provided to adjust the amount of the third fluid in the second receiving cavity to adjust the curvature of the second elastic layer, thereby adjusting the focal length of the second lens assembly to adjust the myopia or hyperopia of the second lens assembly.

12. The lens module according to claim 11, characterized in that, The driving mechanism includes a second actuator, an elastic container, and a second valve. The second actuator is connected to the second receiving cavity and the elastic container, and the valve is disposed between the elastic container and the second receiving cavity. The third fluid is also partially disposed in the elastic container. When the second actuator and the second valve are opened and the second actuator drives a portion of the third fluid in the second receiving cavity to flow to the elastic container, the amount of the third fluid in the second receiving cavity decreases to adjust the radius of curvature of the second elastic layer, thereby adjusting the focal length of the second lens assembly; when the second valve is opened and the third fluid in the elastic container flows to the second receiving cavity, the amount of the third fluid in the second receiving cavity increases to adjust the radius of curvature of the second elastic layer, thereby adjusting the focal length of the second lens assembly.

13. The lens module according to claim 12, characterized in that, When the elastic container is in an expanded state, the second valve opens to connect the second receiving cavity and the elastic container. The third fluid in the elastic container flows to the second receiving cavity under the elastic restoring force of the elastic container, increasing the amount of the third fluid in the second receiving cavity to adjust the radius of curvature of the second elastic layer, thereby adjusting the focal length of the second lens assembly. When the elastic container is in a relaxed state, both the second actuator and the second valve open. The second actuator drives the third fluid in the elastic container to flow to the second receiving cavity, increasing the amount of the third fluid in the second receiving cavity to adjust the radius of curvature of the second elastic layer, thereby adjusting the focal length of the second lens assembly.

14. The lens module according to claim 11, characterized in that, The elastic modulus E1 of the second light-transmitting layer is in the range of: E1≥50Gpa; the elastic modulus E2 of the first elastic layer is in the range of: 10MPa≤E2≤100MPa; the elastic modulus E3 of the second elastic layer is in the range of: 10MPa≤E3≤100MPa.

15. The lens module according to claim 11, characterized in that, The refractive index n1' of the second light-transmitting layer, the refractive index n4 of the second elastic layer, and the refractive index n5 of the third fluid satisfy the following relationship: 0.95≤n1' / n4≤1.05; 0.95≤n1' / n5≤1.05; 0.95≤n4 / n5≤1.

05.

16. The lens module according to claim 1, characterized in that, The lens module also includes: an optical waveguide assembly; The optical waveguide assembly is stacked on the side of the first lens assembly that faces away from the second lens assembly; or, The optical waveguide assembly is stacked on the side of the second lens assembly that is away from the first lens assembly.

17. A wearable device, characterized in that, include: The lens module according to any one of claims 1-16; as well as A carrier component, which is used to support the lens module.

18. The wearable device according to claim 17, characterized in that, The wearable device is an augmented reality device, and the wearable device further includes: A projection optical engine, comprising a display and a lens, wherein the display emits light signals toward the lens and the lens modulates the light signals.

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