Composite prescription lens and near-to-eye display device thereof

Abstract

The utility model discloses a composite prescription lens and a near-to-eye display device thereof. The composite prescription lens comprises a prescription lens and a near-to-eye display element, and the prescription lens has refractive power and at least comprises a first prescription lens and a second prescription lens; the near-to-eye display element is mounted on the first prescription lens or the second prescription lens in a planar manner; and a first planar surface of the first prescription lens facing the near-eye display element and a second planar surface of the second prescription lens facing the near-eye display element are at least partially interconnected. According to the invention, the prescription lenses and the near-to-eye display elements are integrated together, so that not only can the visualization and augmented reality functions of image information be realized, but also the vision correction function can be realized, and through the plane connection between the prescription lenses and the near-to-eye display elements and the plane connection between the prescription lenses, the processing difficulty is reduced, and the product percent of pass is improved.

Description

Technical Field

[0001] The present application relates to the field of optical technologies, and particularly to a compound prescription lens and a near-eye display device thereof. Background Art

[0002] With the improvement of the performance of multimedia devices, the visual display of information has become increasingly important.

[0003] Augmented Reality (AR) technology superimposes virtual information and the real world onto the same picture, enabling users in it to perform three-dimensional real-time interaction with virtual and real scenes in a natural way, realizing the seamless connection between virtual information and the real world. In recent years, AR glasses have received extensive attention. To achieve AR near-eye display, generally, a near-eye display element needs to be integrated onto an image combiner, so that the content to be displayed can be projected into the human eye without affecting the passage of ambient light, realizing the function of augmented reality. However, AR glasses can only achieve the visualization of image information and cannot meet the needs of consumers to correct their vision using glasses at the same time. Summary of the Utility Model

[0004] The compound prescription lens and the near-eye display device provided by the embodiments of the present application can solve or partially solve the above deficiencies or other deficiencies in the prior art.

[0005] A first aspect of the present application provides a compound prescription lens, which includes a prescription lens and a near-eye display element. The prescription lens has a refractive power and at least includes a first prescription lens and a second prescription lens; the near-eye display element is flatly mounted on the first prescription lens or the second prescription lens; and the first flat surface of the first prescription lens facing the near-eye display element and the second flat surface of the second prescription lens facing the near-eye display element are at least partially connected to each other.

[0006] According to an exemplary embodiment of the present application, a first mounting portion that is recessed inward is provided in the first flat surface of the first prescription lens; the near-eye display element is flatly glued at the first mounting portion; and the surface of the near-eye display element facing away from the first prescription lens is flush with the first flat surface of the first prescription lens.

[0007] According to an exemplary embodiment of the present application, the surface of the near-eye display element facing away from the first prescription lens and the first flat surface of the first prescription lens and the second flat surface of the second prescription lens are glued and connected.

[0008] According to an exemplary embodiment of the present application, the second prescription lens is molded on one side of the first prescription lens on which the near-eye display element is flatly mounted; wherein, the first prescription lens serves as part of the mold.

[0009] According to an exemplary embodiment of the present application, a second mounting portion that is recessed inward is provided in the second planar surface of the second prescription lens; the near-eye display element is planar glued at the second mounting portion, and the surface of the near-eye display element facing away from the second prescription lens is flush with the second planar surface of the second prescription lens.

[0010] According to an exemplary embodiment of the present application, the surface of the near-eye display element facing away from the second prescription lens and the second planar surface of the second prescription lens are adhesively bonded to the first planar surface of the first prescription lens.

[0011] According to an exemplary embodiment of the present application, the first prescription lens is molded on one side of the second prescription lens where the near-eye display element is planar mounted; wherein, the second prescription lens is part of the mold.

[0012] According to an exemplary embodiment of the present application, a third mounting portion that is recessed inward is provided in the first planar surface of the first prescription lens; a fourth mounting portion that is recessed inward is provided in the second planar surface of the second prescription lens; and the near-eye display element is planar glued at the third mounting portion, wherein the surface of the near-eye display element facing away from the first prescription lens protrudes outward from the first planar surface of the first prescription lens; or the near-eye display element is planar glued at the fourth mounting portion, wherein the surface of the near-eye display element facing away from the second prescription lens protrudes outward from the second planar surface of the second prescription lens.

[0013] According to an exemplary embodiment of the present application, the positions of the third mounting portion and the fourth mounting portion are correspondingly arranged; the surface of the near-eye display element facing away from the first prescription lens and the first planar surface of the first prescription lens are adhesively bonded to the second planar surface of the second prescription lens; or the surface of the near-eye display element facing away from the second prescription lens and the second planar surface of the second prescription lens are adhesively bonded to the first planar surface of the first prescription lens; and the near-eye display element is received in the cavity formed by the third mounting portion and the fourth mounting portion, and the size of the cavity is the same as the size of the near-eye display element.

[0014] According to an exemplary embodiment of the present application, it further includes an adhesive, and at least part of the first planar surface of the first prescription lens and the second planar surface of the second prescription lens are adhesively bonded through the adhesive; and the near-eye display element is planar glued to the first prescription lens or the second prescription lens through the adhesive.

[0015] According to an exemplary embodiment of the present application, the near-eye display element includes at least one of a reflective holographic optical element, a reflective diffractive optical element, an optical element with a reflective metasurface, and a liquid crystal optical device.

[0016] According to an exemplary embodiment of the present application, the surface of the first prescription lens facing away from the first plane is convex; and the central thickness d1 of the first prescription lens satisfies: 3.60 mm ≥ d1 ≥ 1.00 mm.

[0017] According to an exemplary embodiment of the present application, the surface of the second prescription lens facing away from the second plane is concave; and the central thickness d2 of the second prescription lens satisfies: 1.00 mm ≥ d2 ≥ 0.80 mm.

[0018] According to an exemplary embodiment of the present application, the refractive power F of the compound prescription lens satisfies: -6D ≤ F ≤ 4D.

[0019] A second aspect of the present application provides a near-eye display device, which includes an optical engine system and the compound prescription lens provided by the second aspect of the present application; the optical engine system emits image light to the compound prescription lens, and the compound prescription lens reflects the image light to the human eye.

[0020] According to an exemplary embodiment of the present application, the near-eye display device further includes a wearable member, and the optical engine system and the compound prescription lens are respectively fixed on the wearable member.

[0021] The compound prescription lens provided by the present application integrates the prescription lens and the near-eye display element. It can not only realize the visualization of image information and the function of augmented reality, but also have the function of vision correction at the same time. And through the planar connection between the prescription lens and the near-eye display element and between the prescription lenses, the processing difficulty is reduced and the product qualification rate is improved; moreover, in the present application, the scheme of directly using the first prescription lens or the second prescription lens as a part of the mold to process the other prescription lens can effectively prevent problems such as the increase in thickness caused by lens gluing, the refractive index mismatch between the lens material and the adhesive layer material, and the residual glue error caused by the gluing process. Description of the Drawings

[0022] By reading the detailed description of the non-limiting embodiments with reference to the following drawings, other features, purposes and advantages of the present application will become more obvious. The drawings are used to better understand the solution and do not constitute a limitation to the present application. In the drawings:

[0023] Figure 1 Shows an exploded view of the structure of the compound prescription lens of Embodiment 1 of the present application;

[0024] Figure 2 Shows a cross-sectional view of the structure of the compound prescription lens of Embodiment 1 of the present application;

[0025] Figure 3 Shows an exploded view of the structure of the compound prescription lens of Embodiment 2 of the present application;

[0026] Figure 4Shows a structural cross-sectional view of the composite prescription lens according to Embodiment 2 of the present application;

[0027] Figure 5 Shows an exploded view of the structure of the composite prescription lens according to Embodiment 3 of the present application;

[0028] Figure 6 Shows a structural cross-sectional view of the composite prescription lens according to Embodiment 3 of the present application;

[0029] Figure 7 Shows a process flow diagram of a composite prescription lens in an exemplary embodiment of the present application;

[0030] Figure 8 Shows another process flow diagram of a composite prescription lens in an exemplary embodiment of the present application;

[0031] Figure 9 Shows a partial structural schematic diagram of a near-eye display device according to an embodiment of the present application;

[0032] Figure 10 Shows a flow chart of a method for preparing a composite prescription lens according to Embodiment 7 of the present application;

[0033] Figure 11 Shows a flow chart of a method for preparing a composite prescription lens according to Embodiment 8 of the present application;

[0034] Figure 12 Shows a flow chart of a method for preparing a composite prescription lens according to Embodiment 9 of the present application;

[0035] Figure 13 Shows a flow chart of a method for preparing a composite prescription lens according to Embodiment 10 of the present application;

[0036] Figure 14 Shows a flow chart of a method for preparing a composite prescription lens according to Embodiment 11 of the present application.

[0037] Reference numerals:

[0038] 100, first prescription lens; 110, first plane; 120, first mounting portion; 130, third mounting portion; 200, second prescription lens; 210, second plane; 220, second mounting portion; 230, fourth mounting portion; 300, near-eye display element; 400, optical engine system; 500, human eye; 600, extrusion device; 710, first mold; 720, second mold; 730, third mold; 740, fourth mold; 810, lens material of the first prescription lens; 820, lens material of the second prescription lens. Detailed Description

[0039] To better understand the present application, various aspects of the present application will be described in more detail with reference to the accompanying drawings. It should be understood that these detailed descriptions are only descriptions of exemplary embodiments of the present application and do not limit the scope of the present application in any way. Throughout the specification, the same reference numerals refer to the same elements. The expression "and / or" includes any and all combinations of one or more of the associated listed items.

[0040] It should be noted that in this specification, the expressions such as first, second, etc. are only used to distinguish one feature from another feature and do not represent any limitation on the feature.

[0041] In the drawings, for the sake of clarity, the thickness, dimensions and shapes of the various components may have been slightly exaggerated. The drawings are only examples and are not drawn to an exact scale.

[0042] It should also be understood that the terms "comprising", "including", "having" and / or "provided with", when used in this specification, indicate the presence of the stated features, elements and / or components, but do not exclude the presence of one or more other features, elements, components and / or combinations thereof. Additionally, the use of "exemplarily" is intended to refer to an example or illustration.

[0043] Unless otherwise defined, all terms (including technical terms and scientific terms) used in the present application have the same meaning as commonly understood by those of ordinary skill in the art to which the present application pertains. It should also be understood that terms (such as those defined in a common dictionary) should be understood to have a meaning consistent with their meaning in the context of the relevant art and should not be interpreted in an idealized or overly formal sense unless expressly so defined in the present application.

[0044] It should be noted that, without conflict, the order of steps in the embodiments of the present application may be interchanged, and the features in each embodiment may be combined with each other. The following embodiments only represent several implementation manners of the present application, and their descriptions are relatively specific and detailed, but should not be construed as limiting the patent scope of the present application. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can be made, and these all belong to the protection scope of the present application. The present application will be described in detail below with reference to the drawings and in conjunction with the embodiments.

[0045] Currently, AR glasses rarely have vision correction functions, so users who need vision correction must wear them in front of prescription glasses or use contact lenses when using AR glasses. This brings a lot of inconvenience and is not conducive to the promotion and use of AR glasses. To solve this problem, it is necessary to integrate near-eye display elements into prescription lenses. Currently, near-eye display elements are generally processed separately from prescription lenses and then bonded together. Prescription lenses are generally curved surfaces. The yield rate of bonding near-eye display elements on curved surfaces is extremely low and very difficult, which invisibly increases the cost of prescription lenses with integrated near-eye display elements.

[0046] To at least partially address one or more of the aforementioned and other potential issues, the first aspect of this application proposes a composite prescription lens. The composite prescription lens includes a prescription lens and a near-eye display element 300. The prescription lens has refractive power and vision correction functionality, and includes at least a first prescription lens 100 and a second prescription lens 200. The prescription lens can also provide additional prescription lens effects, such as selectively placing at least one prescription lens in front of the first prescription lens 100 along the optical axis, so that the resulting prescription lens has and can select functionality within a fixed refractive power range. The prescription lens can be made of glass, thermoplastics, resins, or other polymeric materials. The near-eye display element 300 reflects image light, thereby projecting the desired display content into the human eye without affecting the passage of ambient light, providing augmented reality functionality. The near-eye display element 300 includes at least a reflective holographic optical element, a reflective diffractive optical element, an optical element with a reflective metasurface, and a liquid crystal optical device.

[0047] The near-eye display element 300 is planarly mounted on the first prescription lens 100 or the second prescription lens 200. The first planar surface 110 of the first prescription lens 100 facing the near-eye display element 300 and the second planar surface 210 of the second prescription lens 200 facing the near-eye display element 300 are at least partially connected to each other, forming a composite prescription lens. The composite prescription lens provided herein integrates the prescription lens with the near-eye display element 300, not only enabling visualization of image information and augmented reality, but also providing vision correction. Furthermore, the planar connection between the prescription lens and the near-eye display element 300, as well as between the prescription lenses themselves, reduces manufacturing complexity and improves product quality.

[0048] In some embodiments, a first mounting portion 120 that is recessed inward is provided in the surface of the first planar surface 110 of the first prescription lens 100; the near-eye display element 300 is adhesively bonded to the first mounting portion 120 in a planar manner; and the surface of the near-eye display element 300 facing away from the first prescription lens 100 is flush with the surface of the first planar surface 110 of the first prescription lens 100. In the present application, the near-eye display element 300 is mounted on the first prescription lens 100 by means of planar adhesive bonding, and after the near-eye display element 300 is mounted on the first prescription lens 100, the surface of the near-eye display element 300 facing away from the first prescription lens 100 is flush with the surface of the first planar surface 110 of the first prescription lens 100, which facilitates subsequent planar mounting with the second prescription lens 200. Compared with the curved surface mounting in the prior art, the processing difficulty is reduced and the product qualification rate is improved.

[0049] In some embodiments, the surface of the near-eye display element 300 facing away from the first prescription lens 100 and the surface of the first planar surface 110 of the first prescription lens 100 are adhesively bonded to the second planar surface 210 of the second prescription lens 200. In the present application, planar mounting between the near-eye display element 300, the first prescription lens 100, and the second prescription lens 200 is achieved, reducing the processing difficulty and improving the product qualification rate.

[0050] In some embodiments, the second prescription lens 200 is molded on one side of the first prescription lens 100 where the near-eye display element 300 is mounted in a planar manner; wherein, the first prescription lens 100 serves as a part of the mold. In the present application, the second prescription lens 200 is directly cast on one side of the first prescription lens 100 where the near-eye display element 300 is mounted in a planar manner, eliminating the step of connecting the lenses through adhesive bonding or the like. At the same time, problems such as thickness increase caused by the adhesive bonding step, refractive index mismatch between the lens material and the adhesive layer material, and residual glue error caused by the adhesive bonding process are avoided, simplifying the process steps and optimizing the robustness of the overall process. It should be noted that one side of the first prescription lens 100 where the near-eye display element 300 is mounted in a planar manner refers to the surface of the first planar surface 110 of the first prescription lens 100. In an exemplary embodiment, the surface of the first planar surface 110 of the first prescription lens 100 may be flat, and the near-eye display element 300 may be directly adhesively bonded to the surface of the first planar surface 110 of the first prescription lens 100; an inwardly recessed mounting portion may also be formed in the surface of the first planar surface 110 of the first prescription lens 100, and the near-eye display element 300 may be directly adhesively bonded to the recessed mounting portion. At this time, the depth of the recessed mounting portion may be greater than, less than, or equal to the thickness of the near-eye display element 300, or other planar mounting methods may be used, and specific limitations are not made thereto.

[0051] In some embodiments, a second mounting portion 220 that is recessed inward is provided in the second planar 210 surface of the second prescription lens 200; the near-eye display element 300 is adhesively bonded to the second mounting portion 220 in a planar manner, and the surface of the near-eye display element 300 facing away from the second prescription lens 200 is flush with the second planar 210 surface of the second prescription lens 200. In this application, the near-eye display element 300 is mounted on the second prescription lens 200 by planar adhesive bonding, and after the near-eye display element 300 is mounted on the second prescription lens 200, the surface of the near-eye display element 300 facing away from the second prescription lens 200 is flush with the second planar 210 surface of the second prescription lens 200, which facilitates subsequent planar mounting with the first prescription lens 100. Compared with the curved surface mounting in the prior art, the processing difficulty is reduced and the product qualification rate is improved.

[0052] In some embodiments, the surface of the near-eye display element 300 facing away from the second prescription lens 200 and the second planar 210 surface of the second prescription lens 200 are adhesively bonded to the first planar 110 of the first prescription lens 100. This application realizes planar mounting among the near-eye display element 300, the first prescription lens 100, and the second prescription lens 200, reduces the processing difficulty, and improves the product qualification rate.

[0053] In some embodiments, the first prescription lens 100 is molded on one side of the second prescription lens 200 where the near-eye display element 300 is mounted in a planar manner; wherein, the second prescription lens 200 serves as part of the mold. In this application, the first prescription lens 100 is directly cast on one side of the second prescription lens 200 where the near-eye display element 300 is mounted in a planar manner, eliminating the step of connecting the lenses by adhesive bonding or the like. At the same time, problems such as the increase in thickness caused by the adhesive bonding step, the refractive index mismatch between the lens material and the adhesive layer material, and the residual glue error caused by the adhesive bonding process are avoided, simplifying the process steps and optimizing the robustness of the overall process. It should be noted that one side of the second prescription lens 200 where the near-eye display element 300 is mounted in a planar manner refers to the second planar 210 surface of the second prescription lens 200. In an exemplary embodiment, the second planar 210 surface of the second prescription lens 200 may be flat, and the near-eye display element 300 may be directly adhesively bonded to the surface of the second planar 210 of the second prescription lens 200; an inwardly recessed mounting portion may also be formed in the second planar 210 surface of the second prescription lens 200, and the near-eye display element 300 may be directly adhesively bonded to the recessed mounting portion. At this time, the depth of the recessed mounting portion may be greater than or less than or equal to the thickness of the near-eye display element 300, or other planar mounting methods may be used, and no specific limitation is made thereto.

[0054] In some embodiments, a third mounting portion 130 that is recessed inward is provided on the surface of the first planar surface 110 of the first prescription lens 100; a fourth mounting portion 230 that is recessed inward is provided on the surface of the second planar surface 210 of the second prescription lens 200; and the near-eye display element is adhesively bonded to the third mounting portion in a planar manner, wherein the surface of the near-eye display element 300 facing away from the first prescription lens 100 protrudes outward from the surface of the first planar surface 110 of the first prescription lens 100; or, the near-eye display element 300 is adhesively bonded to the fourth mounting portion 230 in a planar manner, wherein the surface of the near-eye display element 300 facing away from the second prescription lens 200 protrudes outward from the surface of the second planar surface 210 of the second prescription lens 200. In the present application, the near-eye display element 300 is integrated on the prescription lens by means of planar adhesive bonding, which reduces the processing difficulty and improves the product qualification rate.

[0055] In some embodiments, the positions of the third mounting portion 130 and the fourth mounting portion 230 are correspondingly arranged; the surface of the near-eye display element 300 facing away from the second prescription lens 200 and the surface of the second planar surface 210 of the second prescription lens 200 are adhesively bonded to the surface of the first planar surface 110 of the first prescription lens 100; or, the surface of the near-eye display element 300 facing away from the first prescription lens 100 and the surface of the first planar surface 110 of the first prescription lens 100 are adhesively bonded to the surface of the second planar surface 210 of the second prescription lens 200; and the near-eye display element 300 is accommodated in the cavity formed by the third mounting portion 130 and the fourth mounting portion 230, and the size of the cavity is the same as the size of the near-eye display element. In the present application, when the near-eye display element 300 is integrated on the prescription lens, the planar connection between the prescription lenses is realized at the same time, which reduces the processing difficulty and improves the product qualification rate; at the same time, the size of the cavity is the same as the size of the near-eye display element 300, in order to ensure that the near-eye display element 300 will not be displaced, deformed, etc., ensure normal use, and prevent gaps from being generated between the near-eye display element and the lens, affecting the propagation direction of light at the interface.

[0056] In some embodiments, an adhesive is further included, and the surface of the first planar surface 110 of the first prescription lens 100 and the surface of the second planar surface 210 of the second prescription lens 200 are at least partially adhesively bonded through the adhesive; and the near-eye display element 300 is adhesively bonded to the first prescription lens 100 or the second prescription lens 200 in a planar manner through the adhesive. The transparent refractive index of the adhesive matches that of the prescription lens, which can effectively mitigate the refractive index transition between the interfaces.

[0057] In some embodiments, the near-eye display element 300 includes at least one of a reflective holographic optical element, a reflective diffractive optical element, an optical element with a reflective metasurface, and a liquid crystal optical device. Each near-eye display element 300 can be used in cooperation with the prescription lens.

[0058] In some embodiments, the surface of the first prescription lens 100 facing away from the first plane 110 is convex; and the central thickness d1 of the first prescription lens 100 satisfies: 3.60 mm ≥ d1 ≥ 1.00 mm.

[0059] In some embodiments, the surface of the second prescription lens 200 facing away from the second plane 210 is concave; and the central thickness d2 of the second prescription lens 200 satisfies: 1.00 mm ≥ d2 ≥ 0.80 mm.

[0060] By controlling the surface profiles of the first prescription lens 100 and the second prescription lens 200, as well as the central thicknesses of the first prescription lens 100 and the second prescription lens 200 as described above, it is beneficial for light to converge rapidly, first converge and then diverge before entering the human eye, and it can cooperate with the near-eye display element 300, enabling the composite prescription lens to have the dual functions of augmented reality and vision correction.

[0061] In some embodiments, the refractive power F of the composite prescription lens satisfies: -6 D ≤ F ≤ 4 D, which can cover a series of refractive powers from -6 diopters to +4 diopters and can effectively correct vision.

[0062] It should be noted that in the exemplary embodiments, the cross-sectional shapes of the recessed mounting portions such as the first mounting portion 120, the second mounting portion 220, the third mounting portion 130, and the fourth mounting portion 230 projected onto the first plane 110 of the first prescription lens 100 or the second plane 210 of the second prescription lens 200 can be regular polygons such as circles, rectangles, or trapezoids, irregular polygons, etc., as long as the size of the near-eye display element 300 matches the size of the recessed mounting portion, preventing a gap from being generated between the near-eye display element 300 and the lens, ensuring the firmness of the installation of the near-eye display element 300, and preventing the propagation path of light from changing direction at the interface.

[0063] The following further describes specific embodiments applicable to the above embodiments with reference to the accompanying drawings.

[0064] Example 1

[0065] Figure 1 An exploded view of the structure of the composite prescription lens of this embodiment is shown. Figure 2 A cross-sectional view of the structure of the composite prescription lens of this embodiment is shown. As can be seen from Figure 1 and Figure 2 the composite prescription lens includes a prescription lens and a near-eye display element 300.

[0066] The prescription lens includes a first prescription lens 100 and a second prescription lens 200. One surface of the first prescription lens 100 facing the near-eye display element 300 is a first plane 110, and the surface facing away from the first plane 110 is a convex surface. A first mounting portion 120 recessed inward is provided at the center of the surface of the first plane 110, and the recessed surface of the first mounting portion 120 is a plane. One surface of the second prescription lens 200 facing the near-eye display element 300 is a second plane 210, and the surface facing away from the second plane 210 is a concave surface.

[0067] The size of the near-eye display element 300 is the same as that of the inwardly recessed first mounting portion 120. When the near-eye display element 300 is adhesively bonded to the first mounting portion 120 in a planar manner, the surface of the first plane 110 of the first prescription lens 100 is flush with the surface of the near-eye display element 300 facing away from the first prescription lens 100. The surface of the near-eye display element 300 facing away from the first prescription lens 100 and the surface of the first plane 110 of the first prescription lens 100 are adhesively bonded to the surface of the second plane 210 of the second prescription lens 200.

[0068] Example 2

[0069] Figure 3 An exploded view of the structure of the composite prescription lens of this embodiment is shown. Figure 4 A cross-sectional view of the structure of the composite prescription lens of this embodiment is shown. From Figure 3 and Figure 4 it can be seen that the composite prescription lens includes a prescription lens and a near-eye display element 300.

[0070] The prescription lens includes a first prescription lens 100 and a second prescription lens 200. One surface of the first prescription lens 100 facing the near-eye display element 300 is a first plane 110, and the surface facing away from the first plane 110 is a convex surface. One surface of the second prescription lens 200 facing the near-eye display element 300 is a second plane 210, and the surface facing away from the second plane 210 is a concave surface. A second mounting portion 220 recessed inward is provided at the center of the surface of the second plane 210, and the recessed surface of the second mounting portion 220 is a plane.

[0071] The size of the near-eye display element 300 is the same as that of the inwardly recessed second mounting portion 220. When the near-eye display element 300 is adhesively bonded to the second mounting portion 220 in a planar manner, the surface of the second plane 210 of the second prescription lens 200 is flush with the surface of the near-eye display element 300 facing away from the second prescription lens 200. The surface of the near-eye display element 300 facing away from the second prescription lens 200 and the surface of the second plane 210 of the second prescription lens 200 are adhesively bonded to the surface of the first plane 110 of the first prescription lens 100.

[0072] Example 3

[0073] Figure 5 Shows an exploded view of the structure of the composite prescription lens of the present embodiment. Figure 6 Shows a cross-sectional view of the structure of the composite prescription lens of the present embodiment. From Figure 5 and Figure 6 it can be seen that the composite prescription lens includes a prescription lens and a near-eye display element 300.

[0074] The prescription lens includes a first prescription lens 100 and a second prescription lens 200. One surface of the first prescription lens 100 facing the near-eye display element 300 is a first plane 110, and the surface facing away from the first plane 110 is a convex surface. A third mounting portion 130 is recessed inwardly at the center of the surface of the first plane 110, and the recessed surface of the third mounting portion 130 is a plane. One surface of the second prescription lens 200 facing the near-eye display element 300 is a second plane 210, and the surface facing away from the second plane 210 is a concave surface. A fourth mounting portion 230 is recessed inwardly at the center of the surface of the second plane 210, and the recessed surface of the fourth mounting portion 230 is a plane.

[0075] The thickness of the near-eye display element 300 is equal to the sum of the recessed depths of the third mounting portion 130 and the fourth mounting portion 230. The length of the near-eye display element 300 is equal to the length of the third mounting portion 130 and equal to the length of the fourth mounting portion 230. The near-eye display element 300 is adhesively bonded to the third mounting portion 130 in a planar manner. Among them, the surface of the near-eye display element 300 facing away from the first prescription lens 100 protrudes outward from the surface of the first plane 110 of the first prescription lens 100. The surface of the near-eye display element 300 facing away from the second prescription lens 200 and the surface of the second plane 210 of the second prescription lens 200 are adhesively bonded to the surface of the first plane 110 of the first prescription lens 100.

[0076] It should be noted that it is also possible that the near-eye display element 300 is adhesively bonded to the fourth mounting portion 230 in a planar manner. Among them, the surface of the near-eye display element 300 facing away from the second prescription lens 200 protrudes outward from the surface of the second plane 210 of the second prescription lens 200. The surface of the near-eye display element 300 facing away from the first prescription lens 100 and the surface of the first plane 110 of the first prescription lens 100 are adhesively bonded to the surface of the second plane 210 of the second prescription lens 200.

[0077] The near-eye display element 300 can be accommodated in the cavity formed by the third mounting portion 130 and the fourth mounting portion 230.

[0078] Example 4

[0079] Figure 7 Shows a process flow chart of a composite prescription lens according to an exemplary embodiment of the present application. Specifically, asFigure 7 As shown, the lens material 810 of the first prescription lens is poured into the first mold 710 by the extrusion device 600. After curing, the first prescription lens 100 is formed. The first prescription lens 100 is taken out, and the near-eye display element 300 is flatly glued to the first prescription lens 100. Then, the first prescription lens 100 glued with the near-eye display element 300 is put into the second mold 720 and serves as a part of the second mold 720. The lens material 820 of the second prescription lens is directly poured into the second mold 720 through the extrusion device 600 on the side of the first prescription lens 100 where the near-eye display element 300 is glued. After curing, the second prescription lens 200 is formed, and thus the composite prescription lens is obtained. Among them, the side of the first prescription lens 100 facing the near-eye display element 300 is the surface of the first plane 110. The surface of the side of the second prescription lens 200 facing the near-eye display element 300 has an inwardly recessed mounting portion, and the size of the mounting portion is the same as the size of the near-eye display element 300.

[0080] Example 5

[0081] Figure 8 Another process flow diagram of the composite prescription lens according to an exemplary embodiment of the present application is shown. Specifically, as Figure 8 shown, the lens material 820 of the second prescription lens is poured into the third mold 730 by the extrusion device 600. After curing, the second prescription lens 200 is formed. The second prescription lens 200 is taken out, and the near-eye display element 300 is flatly glued to the second prescription lens 200. Then, the second prescription lens 200 glued with the near-eye display element 300 is put into the fourth mold 740 and serves as a part of the fourth mold 740. The lens material 810 of the first prescription lens is directly poured into the fourth mold 740 through the extrusion device 600 on the side of the second prescription lens 200 where the near-eye display element 300 is glued. After curing, the first prescription lens 100 is formed, and thus the composite prescription lens is obtained. Among them, the side of the second prescription lens 200 facing the near-eye display element 300 is the surface of the second plane 210. The surface of the side of the first prescription lens 100 facing the near-eye display element 300 has an inwardly recessed mounting portion, and the size of the mounting portion is the same as the size of the near-eye display element 300.

[0082] It should be noted that in the exemplary embodiments of the present application, the first prescription lens 100 having the first plane 110 surface and the second prescription lens 200 having the second plane 210 surface may also be formed by a molding process. After the near-eye display element 300 is planar glued to the first prescription lens 100 or the second prescription lens 200, the first plane 110 surface of the first prescription lens 100 facing the near-eye display element 300 and the second plane 210 surface of the second prescription lens 200 facing the near-eye display element 300 are at least partially glued and connected to each other to form a composite prescription lens.

[0083] Example 6

[0084] Based on the structure of any one of the composite prescription lenses in the above embodiments, by changing the basic parameters of the first prescription lens 100 and the second prescription lens 200, the following table is obtained:

[0085] Table 1

[0086]

[0087]

[0088] It can be seen from Table 1 that through the cooperation of the first prescription lens 100 and the second prescription lens 200, the composite prescription lens can cover a series of diopters from -6 diopters to +4 diopters, and can effectively correct vision.

[0089] The second aspect of the present application provides a near-eye display device, including an optical engine system 400 and the composite prescription lens provided in the first aspect of the present application. The optical engine system can emit image light to the composite prescription lens, and the composite prescription lens reflects the image light to the human eye 500.

[0090] The optical engine system 400 can be implemented using a variety of display technologies, including liquid crystal displays (LCDs), liquid crystal on silicon (LCoS) displays, micro light-emitting diode (LED) displays, organic LEDs (OLEDs), micro projectors, or other means. The optical engine system 400 can include lenses that can magnify and / or collimate the image light so that it can reach the composite prescription lens and be reflected by the near-eye display element 300 to the human eye 500.

[0091] For the convenience of understanding, in the following description: the first plane 110 of the first prescription lens 100 is called the image side of the first prescription lens 100; the surface of the first prescription lens 100 facing away from the first plane 110 is called the object side of the first prescription lens 100; the second plane 210 of the second prescription lens 200 is called the object side of the second prescription lens 200; the surface of the second prescription lens 200 facing away from the second plane 210 is called the image side of the second prescription lens 200.

[0092] As shown Figure 9 in the figure, the concave curvature of the image side of the second prescription lens 200 and the near-eye display element 300 are jointly configured to impart a prescription lens effect to the image light, while the convex curvature of the object side of the first prescription lens 100 and the concave curvature of the image side of the second prescription lens 200 are jointly configured to impart a prescription lens effect to the ambient light. Since the object side of the first prescription lens 100 is independent of the optical path of the image light, and the near-eye display element 300 does not impart optical power to the ambient light, this independence and decoupling between the optical paths of the ambient light and the image light provide sufficient design flexibility to provide an appropriate user prescription lens effect to the two separate optical paths. It should be noted that the interface between the near-eye display element 300 and the prescription lens does not cause the transmitted ambient light to refract and bend.

[0093] Specifically, the ambient light is corrected by the combination of the object side of the first prescription lens 100 and the image side of the second prescription lens 200. At the same time, the optical engine system 400 emits image light to the compound prescription lens. The image light enters from the image side of the second prescription lens 200, is reflected by the near-eye display element 300, and then exits from the image side of the second prescription lens 200, and is superimposed on the corrected ambient light. That is, the corrected image light is regarded by the user as a virtual image superimposed on the corrected ambient light as augmented reality. Furthermore, the near-eye display device can not only realize the functions of visualizing image information and augmented reality, but also have the function of vision correction at the same time; and the near-eye display element 300 and the prescription lens are combined, and there is no need to install a special prescription lens for vision correction, making the near-eye display device applicable to a wider range of people and the overall structure more portable.

[0094] Furthermore, the near-eye display device further includes a wearable component, and the optical engine system 400 and the compound prescription lens are respectively fixed on the wearable component. It should be noted that in the embodiment of the present application, the wearable component can be but is not limited to a near-eye display glasses frame or a virtual reality helmet. When the wearable component is a near-eye display glasses frame, the near-eye display glasses frame includes a frame and two temple arms respectively located on both sides of the frame. The compound prescription lens is embedded in the frame, and the optical engine system 400 is installed on the temple arm. When the wearable component is a virtual reality helmet, the side of the virtual reality helmet facing the user's face has a window, and the compound prescription lens is embedded in the window. Of course, in addition to being a near-eye display glasses frame or a virtual reality helmet, the wearable component can also be other forms of structural components such as a strap. According to the shape of the wearable component, the compound prescription lens can be ground to process into a suitable lens and assembled on the wearable component. The wearable component and the compound prescription lens can be designed separately, which is convenient for users to choose according to their preferences.

[0095] The third aspect of the present application provides a method for preparing a composite prescription lens. The preparation method includes: flatly mounting a near-eye display element on a first prescription lens or a second prescription lens; forming a composite prescription lens from the first prescription lens, the near-eye display element, and the second prescription lens; wherein, the first planar surface of the first prescription lens facing the near-eye display element is at least partially connected to the second planar surface of the second prescription lens facing the near-eye display element.

[0096] The method for preparing a composite prescription lens provided by the present application integrates a prescription lens with a near-eye display element, which can not only realize the visualization of image information and the function of augmented reality, but also have the function of vision correction at the same time. Moreover, through the planar connection between the prescription lens and the near-eye display element and between the prescription lenses, the processing difficulty is reduced and the product qualification rate is improved.

[0097] In some embodiments, flatly mounting the near-eye display element on the first prescription lens includes: forming the first prescription lens by a molding process, wherein a first mounting portion recessed inward is formed in the first planar surface of the first prescription lens; flatly gluing the near-eye display element to the first mounting portion; wherein, the surface of the near-eye display element facing away from the first prescription lens is flush with the first planar surface of the first prescription lens. In the present application, the near-eye display element is mounted on the first prescription lens by flat gluing, and after the near-eye display element is mounted on the first prescription lens, the surface of the near-eye display element facing away from the first prescription lens is flush with the first planar surface of the first prescription lens, which facilitates the subsequent flat mounting with the second prescription lens. Compared with the curved surface mounting in the prior art, the processing difficulty is reduced and the product qualification rate is improved.

[0098] In some embodiments, forming a composite prescription lens from the first prescription lens, the near-eye display element, and the second prescription lens includes: forming the second prescription lens by a molding process; gluing the second planar surface of the second prescription lens to the surface of the near-eye display element facing away from the first prescription lens and the first planar surface of the first prescription lens. In the present application, the flat mounting among the near-eye display element, the first prescription lens, and the second prescription lens is realized, the processing difficulty is reduced, and the product qualification rate is improved.

[0099] In some embodiments, forming a compound prescription lens from a first prescription lens, a near-eye display element, and a second prescription lens includes: forming the second prescription lens by a molding process on one side of the first prescription lens where the near-eye display element is mounted; wherein the first prescription lens is part of the mold. In this application, the second prescription lens is directly cast on one side of the first prescription lens where the near-eye display element is mounted, eliminating the step of connecting the lenses by gluing or the like. At the same time, it avoids problems such as increased thickness caused by the gluing step, refractive index mismatch between the lens material and the adhesive layer material, and residual glue error caused by the gluing process, simplifies the process steps, and optimizes the robustness of the overall process. It should be noted that the side of the first prescription lens where the near-eye display element is mounted refers to the first planar surface of the first prescription lens. In an exemplary embodiment, the first planar surface of the first prescription lens can be flat, and the near-eye display element can be directly planar-glued on the surface of the first planar surface of the first prescription lens; an inwardly recessed mounting portion can also be formed in the first planar surface of the first prescription lens, and the near-eye display element can be directly planar-glued at the recessed mounting portion. At this time, the depth of the recessed mounting portion can be greater than, less than, or equal to the thickness of the near-eye display element, or other planar mounting methods can also be used, and no specific limitation is made thereto.

[0100] In some embodiments, mounting the near-eye display element planar on the second prescription lens includes: forming the second prescription lens by a molding process, wherein an inwardly recessed second mounting portion is formed in the second planar surface of the second prescription lens; planar-gluing the near-eye display element at the second mounting portion; wherein the surface of the near-eye display element facing away from the second prescription lens is flush with the second planar surface of the second prescription lens. In this application, the near-eye display element is mounted on the second prescription lens by planar gluing, and after the near-eye display element is mounted on the second prescription lens, the surface of the near-eye display element facing away from the second prescription lens is flush with the second planar surface of the second prescription lens, facilitating subsequent planar mounting with the first prescription lens. Compared with the curved surface mounting in the prior art, it reduces the processing difficulty and improves the product qualification rate.

[0101] In some embodiments, forming a compound prescription lens from a first prescription lens, a near-eye display element, and a second prescription lens includes: forming the first prescription lens by a molding process; gluing the first planar surface of the first prescription lens to the surface of the near-eye display element facing away from the second prescription lens and the second planar surface of the second prescription lens. In this application, planar mounting between the near-eye display element, the first prescription lens, and the second prescription lens is achieved, reducing the processing difficulty and improving the product qualification rate.

[0102] In some embodiments, forming a compound prescription lens from a first prescription lens, a near-eye display element, and a second prescription lens includes: forming the first prescription lens by a molding process on a side of the second prescription lens where the near-eye display element is mounted on the second prescription lens plane; wherein the second prescription lens is part of the mold. In this application, the first prescription lens is directly cast on the side of the second prescription lens plane where the near-eye display element is mounted, eliminating the step of connecting the lenses by gluing or the like. At the same time, it avoids problems such as increased thickness caused by the gluing step, refractive index mismatch between the lens material and the adhesive layer material, and residual glue error caused by the gluing process, simplifies the process steps, and optimizes the robustness of the overall process. It should be noted that the side of the second prescription lens plane where the near-eye display element is mounted refers to the second flat surface of the second prescription lens. In an exemplary embodiment, the second flat surface of the second prescription lens can be flat, and the near-eye display element can be directly flat-glued on the second flat surface of the second prescription lens; an inwardly recessed mounting portion can also be formed in the second flat surface of the second prescription lens, and the near-eye display element can be directly flat-glued at the recessed mounting portion. At this time, the depth of the recessed mounting portion can be greater than, less than, or equal to the thickness of the near-eye display element, or it can be other flat mounting methods, which are not specifically limited herein.

[0103] In some embodiments, mounting the near-eye display element flat on the first prescription lens or the second prescription lens includes: forming the first prescription lens by a molding process, wherein an inwardly recessed third mounting portion is formed in the first flat surface of the first prescription lens; forming the second prescription lens by a molding process, wherein an inwardly recessed fourth mounting portion is formed in the second flat surface of the second prescription lens; flat-gluing the near-eye display element at the third mounting portion, wherein the surface of the near-eye display element facing away from the first prescription lens protrudes outward from the first flat surface of the first prescription lens; or flat-gluing the near-eye display element at the fourth mounting portion, wherein the surface of the near-eye display element facing away from the second prescription lens protrudes outward from the second flat surface of the second prescription lens. In this application, the near-eye display element is integrated on the prescription lens by flat gluing, reducing the processing difficulty and improving the product qualification rate.

[0104] In some embodiments, forming a compound prescription lens from a first prescription lens, a near-eye display element, and a second prescription lens includes: gluing the surface of the near-eye display element facing away from the first prescription lens and the first planar surface of the first prescription lens to the second planar surface of the second prescription lens; or gluing the surface of the near-eye display element facing away from the second prescription lens and the second planar surface of the second prescription lens to the first planar surface of the first prescription lens; wherein the position of the third mounting portion is correspondingly set with the position of the fourth mounting portion, and the near-eye display element is received in the cavity formed by the third mounting portion and the fourth mounting portion, and the size of the cavity is the same as the size of the near-eye display element. When the present application satisfies the integration of the near-eye display element on the prescription lens, it simultaneously realizes the planar gluing connection between the prescription lenses, reduces the processing difficulty, and improves the product qualification rate; at the same time, making the size of the cavity the same as the size of the near-eye display element is to ensure that the near-eye display element will not shift, deform, etc., ensure normal use, and prevent gaps from being generated between the near-eye display element and the lens, affecting the propagation direction of light at the interface.

[0105] In some embodiments, forming the first prescription lens or the second prescription lens includes: casting, post-curing by light curing. The material for forming the first prescription lens or the second prescription lens at least includes glass, thermoplastic, resin, or other polymeric materials. The mold used for casting is prepared according to the shape of the first prescription lens or the second prescription lens, and the prepared mold can be made of glass material, etc., and no specific limitation is made thereto.

[0106] In some embodiments, the surface of the formed first prescription lens facing away from the first plane is a convex surface; and the central thickness d1 of the formed first prescription lens satisfies: 3.60 mm ≥ d1 ≥ 1.00 mm.

[0107] In some embodiments, the surface of the formed second prescription lens facing away from the second plane is a concave surface; and the central thickness d2 of the formed second prescription lens satisfies: 1.00 mm ≥ d2 ≥ 0.80 mm.

[0108] The surface profiles of the above-formed first prescription lens and second prescription lens, as well as the central thicknesses of the first prescription lens and the second prescription lens, are conducive to the rapid convergence of light, first converge and then diverge and enter the human eye, and can cooperate with the near-eye display element to enable the compound prescription lens to have the dual functions of augmented reality and vision correction.

[0109] In some embodiments, the refractive power F of the formed compound prescription lens satisfies: -6D ≤ F ≤ 4D. The compound prescription lens manufactured by the present application can cover a series of refractive powers from -6 diopters to +4 diopters, and can effectively correct vision.

[0110] The following further describes specific embodiments applicable to the above embodiments with reference to the accompanying drawings.

[0111] Example 7

[0112] This embodiment provides a method for manufacturing a composite prescription lens. As Figure 10 shown, the manufacturing method includes the following steps:

[0113] S1: Form a first prescription lens through a molding process, wherein one surface of the first prescription lens is a first plane, and a first mounting portion recessed inward is formed in the first plane;

[0114] S2: Form a second prescription lens through a molding process, wherein one surface of the second prescription lens is a second plane;

[0115] S3: Glue the near-eye display element plane to the first mounting portion, wherein the surface of the near-eye display element facing away from the first prescription lens is flush with the first plane surface of the first prescription lens;

[0116] S4: Glue the surface of the near-eye display element facing away from the first prescription lens and the first plane surface of the first prescription lens to the second plane surface of the second prescription lens.

[0117] It should be noted that, exemplarily, the near-eye display element can also be glued to the second plane surface of the second prescription lens first and then glued to the first prescription lens formed in step S1. In this embodiment, the near-eye display element is integrated into the prescription lens by planar gluing, and the overall processing difficulty is simpler than methods such as curved surface attachment and direct casting molding, with a higher yield and easier control of the overall production cost.

[0118] Example 8

[0119] This embodiment provides another method for manufacturing a composite prescription lens. As Figure 11 shown, the manufacturing method includes the following steps:

[0120] S1: Form a first prescription lens through a molding process, wherein one surface of the first prescription lens is a first plane;

[0121] S2: Form a second prescription lens through a molding process, wherein one surface of the second prescription lens is a second plane, and a second mounting portion recessed inward is formed in the second plane;

[0122] S3: Glue the near-eye display element plane to the second mounting portion, wherein the surface of the near-eye display element facing away from the second prescription lens is flush with the second plane surface of the second prescription lens;

[0123] S4: Glue the surface of the near-eye display element facing away from the second prescription lens and the second planar surface of the second prescription lens to the first planar surface of the first prescription lens.

[0124] It should be noted that, by way of example, the near-eye display element can also be planar-glued to the first planar surface of the first prescription lens first, and then glued to the second prescription lens formed in step S2.

[0125] Example 9

[0126] This embodiment provides another manufacturing method for a composite prescription lens. As Figure 12 shown, the manufacturing method includes the following steps:

[0127] S1: Form the first prescription lens through a molding process, wherein one surface of the first prescription lens is a first plane, and a third mounting portion recessed inward is formed in the first plane;

[0128] S2: Form the second prescription lens through a molding process, wherein one surface of the second prescription lens is a second plane, and a fourth mounting portion recessed inward is formed in the second plane, wherein the fourth mounting portion is arranged corresponding to the position of the third mounting portion;

[0129] S3: Planar-glue the near-eye display element at the third mounting portion, wherein the surface of the near-eye display element facing away from the first prescription lens protrudes outward from the first planar surface of the first prescription lens;

[0130] S4: Glue the surface of the near-eye display element facing away from the second prescription lens and the second planar surface of the second prescription lens to the first planar surface of the first prescription lens, wherein the near-eye display element is accommodated in the cavity formed by the third mounting portion and the fourth mounting portion, and the size of the cavity is the same as the size of the near-eye display element.

[0131] It should be noted that in step S3, the near-eye display element can also be planar-glued to the fourth mounting portion, wherein the surface of the near-eye display element facing away from the second prescription lens protrudes outward from the second planar surface of the second prescription lens; then, in step S4, glue the surface of the near-eye display element facing away from the first prescription lens and the first planar surface of the first prescription lens to the second planar surface of the second prescription lens, wherein the near-eye display element is accommodated in the cavity formed by the third mounting portion and the fourth mounting portion, and the size of the cavity is the same as the size of the near-eye display element.

[0132] Example 10

[0133] This embodiment provides another manufacturing method for a composite prescription lens. As Figure 13 shown, the manufacturing method includes the following steps:

[0134] S1: Form a first prescription lens through a molding process, wherein one surface of the first prescription lens is a first plane;

[0135] S2: Glue the near-eye display element plane to the first plane surface of the first prescription lens;

[0136] S3: Form a second prescription lens through a molding process on the side of the first prescription lens where the near-eye display element is glued, wherein the first prescription lens is part of the mold.

[0137] Specifically, pour the lens material of the first prescription lens into the first mold through an extrusion device, cure to form the first prescription lens, take out the first prescription lens and glue the near-eye display element plane to the first prescription lens, then put the first prescription lens with the glued near-eye display element into the second mold and use it as part of the second mold, and directly pour the lens material of the second prescription lens into the second mold through the extrusion device on the side of the first prescription lens where the near-eye display element is glued, cure to form the second prescription lens, thus obtaining the composite prescription lens. It should be noted that, by way of example, an inwardly recessed mounting portion may also be formed in the first plane of the first prescription lens, glue the near-eye display element plane to the inwardly recessed mounting portion, and then perform step S3. The recess depth of the formed mounting portion may be greater than, less than or equal to the thickness of the near-eye display element, and no specific limitation is made thereto.

[0138] Example 11

[0139] This embodiment provides another method for manufacturing a composite prescription lens. As Figure 14 shown, the manufacturing method includes the following steps:

[0140] S1: Form a second prescription lens through a molding process, wherein one surface of the second prescription lens is a second plane;

[0141] S2: Glue the near-eye display element plane to the second plane surface of the second prescription lens;

[0142] S3: Form a first prescription lens through a molding process on the side of the second prescription lens where the near-eye display element is glued, wherein the second prescription lens is part of the mold.

[0143] Specifically, the lens material of the second prescription lens is poured into the third mold through an extrusion device, and after curing, the second prescription lens is formed. The second prescription lens is taken out and the near-eye display element is flatly glued to the second prescription lens. Then, the second prescription lens glued with the near-eye display element is put into the fourth mold and used as a part of the fourth mold. The lens material of the first prescription lens is directly poured into the fourth mold through the extrusion device on the side of the second prescription lens where the near-eye display element is glued. After curing, the first prescription lens is formed, and thus the composite prescription lens is obtained. It should be noted that, by way of example, an inwardly recessed mounting portion may also be formed in the second plane of the second prescription lens, the near-eye display element is flatly glued to the inwardly recessed mounting portion, and then step S3 is performed. The recess depth of the formed mounting portion may be greater than, less than, or equal to the thickness of the near-eye display element, and no specific limitation is made thereto.

[0144] The above description is only the preferred embodiments of the present application and the description of the applied technical principles. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solutions formed by the specific combination of the above technical features, and should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, those formed by mutually replacing the above features with the technical features (but not limited to) having similar functions disclosed in the present application.

Claims

1. A composite prescription lens, characterized in that, Comprising: Prescription lenses, having refractive power, at least including a first prescription lens and a second prescription lens; A near-eye display element, flatly mounted on the first prescription lens or the second prescription lens; and The first planar surface of the first prescription lens facing the near-eye display element and the second planar surface of the second prescription lens facing the near-eye display element are at least partially interconnected.

2. The composite prescription lens according to claim 1, wherein, A first mounting portion recessed inward is provided in the first planar surface of the first prescription lens; The near-eye display element is flatly glued at the first mounting portion; and The surface of the near-eye display element facing away from the first prescription lens is flush with the first planar surface of the first prescription lens.

3. The composite prescription lens according to claim 2, wherein, The surface of the near-eye display element facing away from the first prescription lens and the first planar surface of the first prescription lens are glued and connected to the second planar surface of the second prescription lens.

4. The composite prescription lens according to claim 1, wherein The second prescription lens is molded on the side of the first prescription lens where the near-eye display element is flatly mounted; Wherein, the first prescription lens is a part of the mold.

5. The composite prescription lens according to claim 1, characterized in that, A second mounting portion recessed inward is provided in the second planar surface of the second prescription lens; The near-eye display element is flatly glued at the second mounting portion, and The surface of the near-eye display element facing away from the second prescription lens is flush with the second planar surface of the second prescription lens.

6. The composite prescription lens according to claim 5, characterized in that, The surface of the near-eye display element facing away from the second prescription lens and the second planar surface of the second prescription lens are glued and connected to the first planar surface of the first prescription lens.

7. The composite prescription lens according to claim 1, characterized in that, The first prescription lens is molded on the side of the second prescription lens where the near-eye display element is flatly mounted; Wherein, the second prescription lens is a part of the mold.

8. The composite prescription lens according to claim 1, wherein, A third mounting portion recessed inward is provided in the first planar surface of the first prescription lens; A fourth mounting portion recessed inward is provided in the second planar surface of the second prescription lens; and The near-eye display element is flatly glued at the third mounting portion, wherein the surface of the near-eye display element facing away from the first prescription lens protrudes outward from the first planar surface of the first prescription lens; or The near-eye display element is flatly glued at the fourth mounting portion, wherein the surface of the near-eye display element facing away from the second prescription lens protrudes outward from the second planar surface of the second prescription lens.

9. The composite prescription lens according to claim 8, characterized in that, The positions of the third mounting portion and the fourth mounting portion are correspondingly arranged; The surface of the near-eye display element facing away from the first prescription lens and the first planar surface of the first prescription lens are glued and connected to the second planar surface of the second prescription lens; or The surface of the near-eye display element facing away from the second prescription lens and the second planar surface of the second prescription lens are glued and connected to the first planar surface of the first prescription lens; And The near-eye display element is accommodated in the cavity formed by the third mounting portion and the fourth mounting portion, and the size of the cavity is the same as the size of the near-eye display element.

10. The composite prescription lens according to any one of claims 1-9, characterized in that, Also including an adhesive, the first planar surface of the first prescription lens and the second planar surface of the second prescription lens are at least partially glued and connected through the adhesive; and The near-eye display element is adhesively bonded to the first prescription lens or the second prescription lens in a planar manner through the adhesive.

11. The composite prescription lens according to any one of claims 1-9, characterized in that, The near-eye display element includes at least one of a reflective holographic optical element, a reflective diffractive optical element, an optical element with a reflective metasurface, and a liquid crystal optical device.

12. The composite prescription lens according to any one of claims 1-9, characterized in that, The surface of the first prescription lens facing away from the first plane is convex; and The central thickness d1 of the first prescription lens satisfies: 3.60 mm ≥ d1 ≥ 1.00 mm.

13. The composite prescription lens according to claim 12, wherein, The surface of the second prescription lens facing away from the second plane is concave; and The central thickness d2 of the second prescription lens satisfies: 1.00 mm ≥ d2 ≥ 0.80 mm.

14. The composite prescription lens according to claim 13, wherein The refractive power F of the compound prescription lens satisfies: -6D ≤ F ≤ 4D.

15. A near-eye display device, characterized in that, Comprising the compound prescription lens according to any one of claims 1-14, further comprising: An optical engine system that emits image light to the compound prescription lens, and the compound prescription lens reflects the image light to the human eye.

16. The near-eye display device according to claim 15, wherein Further comprising a wearable device, and the optical engine system and the compound prescription lens are respectively fixed to the wearable device.

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