Lens assembly and display device

Abstract

The utility model relates to the technical field of lens assemblies, and provides a lens assembly and a display device. The lens assembly comprises a lens, a film material and a plurality of alignment structures. The lens has a fitting surface. The membrane material is attached to the attaching surface and has a membrane material optical axis. Each alignment structure comprises an alignment bulge and an alignment notch, one of the alignment bulge and the alignment notch is arranged on the fitting surface, the other one of the alignment bulge and the alignment notch is arranged at the edge of the membrane material, one part of the alignment bulge is matched in the alignment notch, a first virtual connecting line is arranged between the two alignment structures, and a second virtual connecting line is arranged between the two alignment structures. An included angle between the first virtual connecting line and the optical axis of the film material is a preset angle.

Description

Technical Field

[0001] The present application relates to the technical field of lens assemblies, and more particularly, to lens assemblies and display devices. Background Art

[0002] Some lens assemblies include a lens and an optical film attached to the surface of the lens. The optical film has an optical axis, and the position of the optical axis cannot be directly judged by the naked eye. As a result, the optical axis of the lens assembly formed by the lens with the attached optical film cannot be judged by the naked eye either. Thus, during the subsequent production or assembly process of the lens assembly, expensive detection equipment is required to judge the position of the optical axis of the lens assembly, resulting in too high processing production costs for the lens assembly. Summary of the Utility Model

[0003] The present application provides a lens assembly and a display device to solve the technical problem of too high assembly costs of some known lens assemblies.

[0004] In a first aspect, the present application provides a lens assembly, including a lens, a film material, and a plurality of alignment structures. The lens has a fitting surface. The film material is attached to the fitting surface, and the film material has a film material optical axis. Each of the alignment structures includes an alignment protrusion and an alignment notch. One of the alignment protrusion and the alignment notch is provided on the fitting surface, and the other is provided on the edge of the film material. A part of the alignment protrusion is fitted into the alignment notch. There is a first virtual connection line between two of the alignment structures, and the included angle between the first virtual connection line and the film material optical axis is a preset angle.

[0005] According to the lens assembly of the present application, during the assembly process, the film material is attached to the fitting surface, the alignment protrusions and alignment notches of the respective alignment structures are respectively fitted, and the position information of the film material optical axis on the film material is judged through the position information of the two alignment structures, so as to further determine the position information of the film material optical axis of the lens assembly after completion of assembly. In the subsequent application process scenarios of the lens assembly, such as during the process of continuing to attach other film materials, cooperating with other lens assemblies, or installing on other components, the position of the optical axis of the lens assembly can be quickly judged through the two alignment structures, without the need to judge by expensive optical measuring equipment, so as to reduce the subsequent processing production costs of the lens assembly.

[0006] During the assembly process of the lens assembly, first roughly place the alignment protrusion into the alignment notch, and then adjust the position of the film material on the lens. Since only a part of the alignment protrusion is fitted into the alignment notch, during the position adjustment process of the film material, the alignment protrusion and the alignment notch can maintain a non-interfering state with each other. Thus, the relative movement between the film material and the lens is easy to achieve, facilitating manual adjustment of the relative position of the film material and the lens multiple times to improve the fitting accuracy between the alignment protrusion and the alignment notch, thereby reducing the assembly difficulty between the film material and the lens, improving the fitting accuracy between the film material and the lens, enhancing the convenience of manual operation, and improving the assembly accuracy and efficiency of the lens assembly.

[0007] In a possible implementation manner:

[0008] The alignment protrusion has a first alignment surface, the alignment notch has a second alignment surface, the first alignment surface and the second alignment surface are spaced apart from each other and form an adjustment space, and the distances at various positions of the adjustment space are the same along the spacing direction of the first alignment surface and the second alignment surface.

[0009] In a possible implementation manner:

[0010] The alignment protrusion includes an alignment portion and a protruding portion. The protruding portion is located outside the alignment notch. The alignment portion is configured to be received in the alignment notch, and the surface of the alignment portion facing the second alignment surface forms the first alignment surface.

[0011] In a possible implementation manner:

[0012] The projection of the first alignment surface perpendicular to the lens is a first virtual line segment, and the shape of the first virtual line segment is an arc, a bent line, or a special-shaped line. The projection of the second alignment surface perpendicular to the lens is a second virtual line segment, and the shape of the second virtual line segment is an arc, a bent line, or a special-shaped line;

[0013] The distances at various positions between the first virtual line segment and the second virtual line segment are the same.

[0014] In a possible implementation manner:

[0015] The alignment protrusion protrudes from the fitting surface; the alignment notch is opened at the edge of the film material and penetrates through the film material along the thickness direction of the film material.

[0016] In a possible implementation manner:

[0017] The thickness of the film material is H1, and the height of the alignment protrusion along the thickness direction of the lens assembly is H2, and H2 ≤ H1.

[0018] In a possible implementation:

[0019] The lens has a first center point; there is a boundary virtual connection line between every two adjacent alignment structures, and multiple boundary virtual connection lines are connected in sequence to form a polygon area. The first center point is located inside the polygon area or on the boundary of the polygon area, and the projection of the optical axis of the film material on the lens coincides with the first center point.

[0020] In a possible implementation:

[0021] The film material has a second center point. The multiple alignment structures include a first alignment structure and a second alignment structure. There is a first virtual connection line between the first alignment structure and the second alignment structure. The first virtual connection line intersects the optical axis of the film material at the second center point, or the first virtual connection line coincides with the optical axis of the film material.

[0022] In a possible implementation:

[0023] The lens includes an optical part and a connecting part. The connecting part is connected to the edge of the optical part. The projection of the film material perpendicular to the lens is located on the optical part. The alignment protrusion or the alignment notch is provided on the connecting part.

[0024] In a second aspect, the present application provides a display device, including a mounting bracket and the foregoing lens assembly. The lens assembly is fixed to the mounting bracket. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0026] Figure 1 It is a schematic structural diagram of a display device according to an embodiment of the present application.

[0027] Figure 2 It is a schematic structural diagram of a lens assembly according to an embodiment of the present application.

[0028] Figure 3 It is Figure 2 a partial enlarged structural diagram at III in

[0029] Figure 4 It is Figure 2 a top view of the lens assembly of

[0030] Figure 5 is Figure 4 A partial enlarged structural schematic diagram at position V in

[0031] Figure 6 is Figure 4 A partial cross-sectional view of the lens assembly of

[0032] Figure 7 A partial cross-sectional view of the lens assembly of another embodiment of the present application.

[0033] Figure 8 A top view of the lens assembly of another embodiment of the present application.

[0034] Figure 9 A top view of the lens assembly of another embodiment of the present application.

[0035] Figure 10 A top view of the lens assembly of another embodiment of the present application.

[0036] Figure 11 A structural schematic diagram of the lens assembly of another embodiment of the present application.

[0037] Figure 12 is Figure 11 A partial enlarged structural schematic diagram at position XII in

[0038] Figure 13 is Figure 11 A top view of the lens assembly in

[0039] Figure 14 is Figure 11 An exploded structural schematic diagram of the lens assembly in

[0040] Description of main element symbols:

[0041]

[0042] Detailed implementation manners

[0043] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments.

[0044] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there can also be an intermediate element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intermediate element at the same time. When an element is considered to be "disposed on" another element, it can be directly disposed on the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0045] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "or / and" used herein includes any and all combinations of one or more of the related listed items.

[0046] Some embodiments of this application will be described in detail. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0047] Embodiment 1

[0048] Referring to Figure 1 , this embodiment provides a display device 200, including a mounting bracket 201 and a lens assembly 100. The lens assembly 100 is fixed to the mounting bracket 201. The display device 200 can be configured as glasses, and the corresponding mounting bracket 201 is configured as a spectacle frame 202. The display device 200 can be configured as a head-mounted display device, and the corresponding mounting bracket 201 is configured as a helmet. The display device 200 can be an AR (augmented reality) display device, a VR (virtual reality) display device, an MR (mixed reality) display device or other types of display devices.

[0049] In this embodiment, referring to Figure 2 and Figure 3, the lens assembly 100 includes a lens 10, a film material 20, and a plurality of alignment structures 30. The lens 10 has a fitting surface 11. The film material 20 is attached to the fitting surface 11, and the film material 20 has a film optical axis X1. Each alignment structure 30 includes an alignment protrusion 31 and an alignment notch 32 respectively. One of the alignment protrusion 31 and the alignment notch 32 is provided on the fitting surface 11, and the other is provided on the edge of the film material 20. A part of the alignment protrusion 31 is fitted into the alignment notch 32. There is a first virtual connection line L1 between two alignment structures 30, and the included angle between the first virtual connection line L1 and the film optical axis X1 is a preset angle α. Wherein, 15° ≤ α ≤ 345°. For example, the preset angle α can be set to any one of 15°, 45°, 90°, 135°, 180°, 225°, 270°, 315°, 345°.

[0050] When assembling the film material 20 on the lens 10, attach the film material 20 to the fitting surface 11, so that the alignment protrusions 31 and the alignment notches 32 of each alignment structure 30 are respectively fitted, and judge the position information of the film optical axis X1 on the film material 20 through the position information of the two alignment structures 30, and then determine the position information of the film optical axis X1 of the lens assembly 100 after completion of assembly. In the subsequent application process scenarios of the lens assembly 100, such as when continuing to attach other film materials 20, cooperating with other lens assemblies 100, or installing on other components, the position of the optical axis of the lens assembly 100 can be quickly judged through the two alignment structures 30, without the need to judge through expensive optical measurement equipment, so as to reduce the subsequent processing production cost of the lens assembly 100.

[0051] During the assembly process of the lens assembly 100, first roughly place the alignment protrusion 31 into the alignment notch 32, and then adjust the position of the film material 20 on the lens 10. Since only a part of the alignment protrusion 31 is fitted into the alignment notch 32, during the position adjustment process of the film material 20, the alignment protrusion 31 and the alignment notch 32 can remain in a non-interfering state, so that the relative movement between the film material 20 and the lens 10 is easy to achieve, which is convenient for manually adjusting the relative positions of the film material 20 and the lens 10 multiple times, so as to improve the fitting accuracy of the alignment protrusion 31 and the alignment notch 32, thereby reducing the assembly difficulty between the film material 20 and the lens 10, improving the fitting accuracy between the film material 20 and the lens 10, improving the convenience of manual operation, and improving the assembly accuracy and assembly efficiency of the lens assembly 100. In addition, during the process of attaching the film material 20 to the lens 10, it is necessary to respectively fit the alignment protrusions 31 and the alignment notches 32 of the multiple alignment structures 30, that is, there are multiple positioning positions between the film material 20 and the lens 10, which can reduce the error of the fitting position of the film material 20 on the lens 10, thereby improving the assembly accuracy between the film material 20 and the lens 10.

[0052] Moreover, the design of the alignment structure 30 has no requirements for the shape of the film material 20 or the shape of the lens 10. Therefore, the lens assembly 100 of this embodiment can be formed into a circular, elliptical, or polygonal shape. The lens assembly 100 can be formed into a structure with equal thickness or unequal thickness. The structure with equal thickness means that the thickness of each region of the lens assembly 100 is the same.

[0053] In one embodiment, the film material 20 can be attached to the lens 10 by a roller attachment method or a vacuum attachment method.

[0054] The known film material 20 is obtained by cutting a specified area from an optical film, and the direction of the film optical axis X1 of the film material 20 is the same as the direction of the optical axis of the optical film. During the cutting process of the film material 20, optical equipment is also required to determine the direction of the optical axis of the optical film. Therefore, during the cutting process of the film material 20, a concave shape can be added to the cutting path of the film material 20 to form an alignment notch 32, or a convex shape can be added to the cutting path of the film material 20 to form an alignment protrusion 31. Thus, after the film material 20 is cut, the position of the film optical axis X1 can be determined by the alignment protrusion 31 or the alignment notch 32.

[0055] In one embodiment, referring to Figure 4 , the lens 10 has a first center point M1. There is a boundary virtual connection line L3 between every two adjacent alignment structures 30. A plurality of boundary virtual connection lines L3 are sequentially connected to form a polygonal region A. The first center point M1 is located inside the polygonal region A or on the boundary of the polygonal region A. The boundary of the polygonal region A is one of the boundary virtual connection lines L3. The projection of the film optical axis X1 on the lens 10 coincides with the first center point M1. Thus, during the process of attaching the film material 20 to the lens 10, it is necessary to control that a plurality of alignment notches 32 outside the first center point M1 are all adapted to a plurality of alignment protrusions 31, so that several positions on the edge of the film material 20 are all positioned and matched with the lens 10 through the alignment structure 30, thereby improving the position accuracy after multiple position adjustments of the film material 20 relative to the lens 10 and reducing the position error of the film optical axis X1.

[0056] In one embodiment, referring to Figure 4 , the lens assembly 100 includes four alignment structures 30. There is a second virtual connection line L2 between each alignment structure 30 and the first center point M1. Along the circumferential direction of the lens 10, the included angle between two adjacent second virtual connection lines L2 is 90°.

[0057] In one embodiment, referring to Figures 8 to 10 , a plurality of alignment structures 30 are evenly distributed around the first center point M1 to further improve the assembly accuracy of the film material 20 and the lens 10.

[0058] In one embodiment, referring toFigure 4 A plurality of alignment protrusions 31 are all provided at the edge of the lens 10. The connection line between every two adjacent alignment protrusions 31 is the boundary virtual connection line L3, and a plurality of boundary virtual connection lines L3 are sequentially connected to form the aforementioned polygonal area A.

[0059] In this embodiment, refer to Figure 4 The lens 10 includes an optical portion 12 and a connecting portion 13. The connecting portion 13 is connected to the edge of the optical portion 12. The film material 20 includes a light-transmitting portion 21 and a fitting portion 22. The fitting portion 22 is connected to the edge of the light-transmitting portion 21, and the light-transmitting portion 21 is attached to the optical portion 12. One of the alignment protrusion 31 and the alignment notch 32 is provided on the connecting portion 13, and the other of the alignment protrusion 31 and the alignment notch 32 is provided on the fitting portion 22. In this way, both the optical portion 12 and the light-transmitting portion 21 are kept intact, and the light-transmitting performance of the lens assembly 100 will not be affected by the alignment structure 30.

[0060] In one embodiment, refer to Figure 4 The cross-section of the lens 10 is circular, and the first center M2 of this circle is the first center point M1. In one embodiment, the cross-section of the lens 10 is elliptical, polygonal or irregular, and the first center point M1 is the geometric center point of the cross-section.

[0061] In one embodiment, refer to Figure 4 The film material 20 has a second center point M3. The plurality of alignment structures 30 include a first alignment structure 30 and a second alignment structure 30. There is a first virtual connection line L1 between the first alignment structure 30 and the second alignment structure 30. The first virtual connection line L1 intersects the optical axis X1 of the film material at the second center point M3, or the first virtual connection line L1 coincides with the optical axis X1 of the film material.

[0062] In one embodiment, the cross-section of the film material 20 is circular, and the second center M4 of this circle is the second center point M3. In one embodiment, the cross-section of the film material 20 is elliptical, polygonal or irregular, and the second center point M3 is the geometric center point of the cross-section.

[0063] In one embodiment, refer to Figure 3 The alignment protrusion 31 protrudes from the fitting surface 11. The alignment notch 32 is opened at the edge of the film material 20 and penetrates through the film material 20 along the thickness direction N of the lens assembly 100. During the processing of the lens 10, the formation of the alignment protrusion 31 on the fitting surface 11 is relatively simple, and by opening the alignment notch 32 at the edge of the film material 20, the processing loss of the film material 20 is relatively low, thereby reducing the production difficulty and cost of the lens assembly 100.

[0064] In one embodiment, the lens 10 can be formed by injection molding or CNC precision machining.

[0065] In one embodiment, referring to Figure 3 and Figure 5 , the alignment protrusion 31 has a first alignment surface 311, and the alignment notch 32 has a second alignment surface 321. The first alignment surface 311 and the second alignment surface 321 are spaced apart to form an adjustment space 33. Along the spacing direction of the first alignment surface 311 and the second alignment surface 321, the spacing of the adjustment space 33 is B, and the spacing B at each part of the adjustment space 33 is the same. Each alignment structure 30 defines an adjustment space 33. During the process of attaching the film material 20 to the lens 10, as the film material 20 is at different positions on the lens 10, the spacings at each part of the multiple adjustment spaces 33 will change relatively. By finely adjusting the position of the film material 20 on the lens 10 multiple times, it can be finally achieved that the spacings at each part of the adjustment space 33 are the same, and the spacings of the multiple adjustment spaces 33 are also approximately the same. At this time, the position of the film material 20 on the lens 10 is relatively accurate, and the angle between the optical axis X1 of the film material 20 and the first virtual connection line L1 is equal to a preset angle. In this way, it is convenient for manual adjustment, reducing the adjustment cost, and the adjustment accuracy can reach from ±0.15 mm to ±0.05 mm, improving the attachment accuracy of the film material 20 on the lens 10.

[0066] In one embodiment, 0 mm ≤ B ≤ 0.5 mm, and B can be set to any one of 0 mm, 0.1 mm, 0.2 mm, 0.3 mm, 0.4 mm, or 0.5 mm.

[0067] In one embodiment, referring to Figure 5 , the projection of the first alignment surface 311 perpendicular to the lens 10 is a first virtual line segment 312, and the shape of the first virtual line segment 312 is an arc, a bent line, or an irregular line. The projection of the second alignment surface 321 perpendicular to the lens 10 is a second virtual line segment 322, and the shape of the second virtual line segment 322 is an arc, a bent line, or an irregular line. The first virtual line segment 312 is one boundary of the projection of the adjustment space 33 perpendicular to the lens 10, and the second virtual line segment 322 is the other boundary of the projection of the adjustment space 33 perpendicular to the lens 10. By controlling the spacings at each part between the first virtual line segment 312 and the second virtual line segment 322 to be the same, the spacings at each part of the adjustment space 33 can be made the same.

[0068] In one embodiment, referring to Figure 5, the alignment protrusion 31 includes an alignment portion 313 and an extending portion 314. The extending portion 314 is located outside the alignment notch 32, and the alignment portion 313 is configured to be received in the alignment notch 32. The surface of the alignment portion 313 facing the second alignment surface 321 is formed as the first alignment surface 311. Thus, when the position of the film material 20 is finely adjusted relative to the lens 10, the alignment notch 32 rotates relative to the alignment protrusion 31 until the alignment portion 313 is received in the alignment notch 32. The lens 10 has a high degree of adjustment freedom, which is beneficial to improving the alignment accuracy between the film material 20 and the lens 10.

[0069] In this embodiment, referring to Figure 6 and Figure 7 , the thickness of the film material 20 is H1, and the height of the alignment protrusion 31 along the thickness direction N of the lens assembly 100 is H2, and H2 ≤ H1. Thus, it is possible to prevent the alignment protrusion 31 from protruding outside the film material 20, so as to avoid the alignment protrusion 31 affecting the application of the lens assembly 100.

[0070] In one embodiment, referring to Figure 7 , a flange 23 is provided on the side surface of the film material 20. The flange 23 extends along the radial direction of the lens assembly 100. Along the thickness direction N of the lens assembly 100, the flange 23 is opposite to the alignment protrusion 31, and the projection of the flange 23 on the lens 10 covers the alignment protrusion 31. Thus, the flange 23 can play a role in shielding the alignment protrusion 31, so as to improve the appearance integrity of the lens assembly 100.

[0071] In one embodiment, the flange 23 is spaced apart from the alignment protrusion 31. In one embodiment, referring to Figure 7 , the flange 23 is attached to the surface of the alignment protrusion 31.

[0072] In one embodiment, referring to Figure 5 , the cross-sectional shape of the alignment protrusion 31 is circular. In other embodiments, referring to Figures 8 to 10 , the cross-sectional shape of the alignment protrusion 31 is a polygon such as a quadrilateral, a triangle, or a pentagon. When the cross-sectional shape of the alignment protrusion 31 is a polygon, a part of at least two sides of the polygon extends into the alignment notch 32 to improve the positioning reliability.

[0073] Embodiment Two

[0074] Next, refer to Figures 11 to 14 to describe the lens assembly 100a of another embodiment of the present application. The structural difference between the lens assembly 100a of this embodiment and the lens assembly 100 of the foregoing embodiment lies in the different structures of the alignment structure 30.

[0075] In one embodiment, referring to Figure 11 and Figure 12, the alignment protrusion 31 protrudes from the edge of the film material 20 in the radial direction of the film material 20. The lens 10 further includes an alignment portion 34. The alignment portion 34 protrudes from the bonding surface 11. The alignment protrusion 31 is located outside the film material 20 along the radial direction of the lens assembly 100. An alignment notch 32 is formed on the side surface of the alignment portion 34, and the alignment notch 32 penetrates through the lens 10 in the thickness direction N of the lens assembly 100. The alignment protrusion 31 is fitted into the alignment notch 32. In this way, only a plurality of alignment protrusions 31 need to be provided at the edge of the film material 20, which can reduce the tape loss rate of the film material 20 during processing, thereby reducing the processing cost of the lens assembly 100.

[0076] In one embodiment, referring to Figure 12 , the alignment notch 32 is in the shape of a semi-circular groove. In other embodiments, the cross-sectional shape of the alignment notch 32 can be a polygon, a special shape or other shapes.

[0077] In one embodiment, referring to Figure 13 and Figure 14 , a plurality of alignment portions 34 are provided at the edge of the lens 10. There is a boundary virtual connection line L3 between two adjacent alignment portions 34, and a plurality of boundary virtual connection lines L3 are sequentially connected to form the aforementioned polygon region A.

[0078] The above embodiments are only used to illustrate the technical solutions of the present application and not to limit them. Although the present application has been described in detail with reference to the above preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present application can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present application.

Claims

1. A lens assembly, characterized in that: include: A lens having a fitting surface; A film material, the film material is attached to the attachment surface, and the film material has a film material optical axis; A plurality of alignment structures, each of which comprises an alignment protrusion and an alignment cutout, wherein one of the alignment protrusion and the alignment cutout is arranged on the bonding surface, and the other is arranged on the edge of the film material, a part of the alignment protrusion fits in the alignment cutout, wherein a first virtual line is provided between two of the alignment structures, and an angle between the first virtual line and the optical axis of the film material is a preset angle.

2. The lens assembly according to claim 1, characterized in that: The alignment protrusion has a first alignment surface, the alignment cutout has a second alignment surface, the first alignment surface and the second alignment surface are spaced apart to form an adjustment space, and along the spacing direction between the first alignment surface and the second alignment surface, the spacing between each part of the adjustment space is the same.

3. The lens assembly according to claim 2, characterized in that: The alignment protrusion includes an alignment portion and a protruding portion, the protruding portion is located outside the alignment cutout, the alignment portion is configured to be received in the alignment cutout, and a surface of the alignment portion facing the second alignment surface forms the first alignment surface.

4. The lens assembly according to claim 2, characterized in that: The projection of the first alignment surface perpendicular to the lens is a first virtual line segment, and the shape of the first virtual line segment is an arc, a bent line or a special-shaped line; The projection of the second alignment surface perpendicular to the lens is a second virtual line segment, and the shape of the second virtual line segment is an arc, a bent line or a special-shaped line; The distances between the first virtual line segment and the second virtual line segment are the same at all locations.

5. The lens assembly according to claim 1, characterized in that: The alignment protrusion is convexly arranged on the fitting surface; The alignment cut is opened at the edge of the film material and penetrates the film material along the thickness direction of the lens assembly.

6. The lens assembly according to claim 5, characterized in that: The thickness of the film material is H1, and the height of the alignment protrusion along the thickness direction of the lens assembly is H2, where H2≤H1.

7. The lens assembly according to claim 1, characterized in that: The lens has a first center point; there is a virtual boundary line between each two adjacent alignment structures, and multiple virtual boundary lines are connected in sequence to form a polygonal area. The first center point is located on the inner side of the polygonal area or at the boundary of the polygonal area, and the projection of the optical axis of the film material on the lens coincides with the first center point.

8. The lens assembly according to claim 1, characterized in that: The film material has a second center point; The multiple alignment structures include a first alignment structure and a second alignment structure, and there is the first virtual line between the first alignment structure and the second alignment structure. The first virtual line intersects with the optical axis of the film material at the second center point, or the first virtual line coincides with the optical axis of the film material.

9. The lens assembly according to claim 1, characterized in that: The lens comprises an optical part and a connecting part, wherein the connecting part is connected to the edge of the optical part; The film material comprises a light-transmitting portion and a matching portion, wherein the matching portion is connected to the edge of the light-transmitting portion, and the light-transmitting portion is attached to the optical portion; Wherein, one of the alignment protrusion and the alignment cutout is arranged on the connecting portion, and the other of the alignment protrusion and the alignment cutout is arranged on the matching portion.

10. A display device, characterized in that: include: Mounting frame; The lens assembly according to any one of claims 1 to 9, wherein the lens assembly is arranged on the mounting frame.

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