Ultra-thin convex lens

Abstract

The utility model discloses an ultra-thin convex lens, which relates to the technical field of convex lenses, and comprises a flexible substrate layer, a metamaterial composite layer, a composite coating, a multifunctional composite film layer and an edge support structure, the metamaterial composite layer is of a meter-scale sub-wavelength structure deposited and compounded on the surface of the flexible base material layer; the multifunctional composite film comprises a high-transmittance film and a wear-resistant film, and the composite coating comprises a reflective coating and an antifouling coating. Based on the metamaterial, the nanotechnology and the composite structure, through the improvement of the multi-layer composite structure and the material, the flexible printed circuit board not only has good light transmittance and transmissivity, but also has good environmental adaptability and durability, and the mechanical strength is effectively enhanced through the edge supporting structure, so that the flexible printed circuit board can be widely applied to the field of flexible printed circuit boards, and the service life of the flexible printed circuit board is prolonged. The lens is prevented from being deformed, and the thickness, durability and optical performance are well balanced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of convex lens lens, specifically to a kind of ultra-thin convex lens lens. BACKGROUND

[0002] Ultra-thin convex lens lens is a kind of special optical element, belongs to convex lens, its feature is small thickness, usually used in accurate optical system, compared with traditional convex lens, its small thickness is integrated into compact optical system.

[0003] Traditional convex lens lens is usually made of single material (such as optical glass or plastic), its thickness is larger, leading to overall optical device is heavy and imaging quality is limited, single material is difficult to meet the comprehensive demand of high light transmittance, lightweight and durability. SUMMARY

[0004] The utility model provides a kind of ultra-thin convex lens lens, with the advantages of high light transmittance, high wear resistance and thin thickness, to solve the problem that the existing convex lens lens is difficult to meet the comprehensive demand of high light transmittance, lightweight and durability.

[0005] The utility model provides the following technical scheme: a kind of ultra-thin convex lens lens, including flexible substrate layer, further including super material composite layer, composite coating, multifunctional composite film layer and edge support structure, wherein:

[0006] The flexible substrate layer is polycarbonate, and the super material composite layer is a millimeter subwavelength structure deposited on the surface of the flexible substrate layer.

[0007] The multifunctional composite film includes a high-transmittance film and a wear-resistant film deposited on the surface of the super material composite layer, and the composite coating includes a reflective coating and an anti-fouling coating coated on the multifunctional composite film.

[0008] The edge support structure is arranged at the edge of the flexible substrate layer to enhance the mechanical strength of the lens.

[0009] As a preferred technical scheme of the utility model, the high-transmittance film is an indium tin oxide film deposited on the surface of the super material composite layer, and the band gap of the indium tin oxide film is 3.5-3.6 eV.

[0010] As a preferred technical scheme of the utility model, the high-transmittance film surface is provided with a first nano-imprint structure, and the first nano-imprint structure is a uniformly distributed circular nano-pillar structure.

[0011] As a preferred technical scheme of the utility model, the wear-resistant film is a silicon carbide film deposited on the surface of the high-transmittance film.

[0012] As a preferred embodiment of this invention, the reflective coating is a silica coating applied to the surface of the wear-resistant film, and the anti-fouling coating is a polyurethane coating applied to the surface of the reflective coating.

[0013] As a preferred embodiment of this utility model, the polyurethane coating has a contact angle greater than 110°, and the surface of the polyurethane coating is provided with a second nanoimprint structure, which is a uniformly distributed pyramid-shaped polyhedron.

[0014] As a preferred embodiment of this invention, the edge support structure includes a polymethyl methacrylate mesh support strip fixed to the back of the flexible substrate layer.

[0015] Compared with the prior art, this utility model provides an ultra-thin convex lens with the following advantages:

[0016] This invention is based on metamaterials, nanotechnology and composite structures. It uses flexible transparent polymer polycarbonate as the lens body, which not only has good light transmittance, but is also easy to process. The nanoscale subwavelength structure has good anti-reflection properties, and the anti-reflection properties can be further improved by the reflective coating. The edge support structure effectively enhances mechanical strength and prevents lens deformation, achieving a good balance between thickness, durability and optical performance. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of this utility model;

[0019] Figure 3 This is a schematic diagram showing the location of the edge support structure of this utility model;

[0020] Figure 4 This utility model Figure 2 Schematic diagram of the first nanoimprint structure in region A;

[0021] Figure 5 This utility model Figure 2 Schematic diagram of the second nanometer imprinted structure in region B of the middle section;

[0022] Figure 6 This utility model Figure 3 Schematic diagram of the edge support structure of the central C zone.

[0023] In the figure: 1, flexible substrate layer; 11, edge support structure; 2, super material composite layer; 3, multifunctional composite film; 31, high light transmission film; 311, first nano-imprint structure; 32, wear-resistant film; 4, composite coating; 41, reflective coating; 42, anti-fouling coating; 421, second nano-imprint structure. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model. Embodiment one

[0025] Please refer to the attached Figures 1-6 , including flexible substrate layer 1, also includes super material composite layer 2, composite coating 4, multifunctional composite film 3 layer and edge support structure 11, wherein:

[0026] Flexible substrate layer 1 is polycarbonate, and super material composite layer 2 is a micron subwavelength structure deposited on the surface of flexible substrate layer 1.

[0027] Multifunctional composite film 3 includes high light transmission film 31 and wear-resistant film 32 compounded on the surface of super material composite layer 2, and composite coating 4 includes reflective coating 41 and anti-fouling coating 42 coated on multifunctional composite film 3.

[0028] Edge support structure 11 is arranged at the edge position of flexible substrate layer 1 and is used for enhancing the mechanical strength of the lens.

[0029] Please refer to the attached Figure 2 High light transmission film 31 is an indium tin oxide film compounded on the surface of super material composite layer 2, and the band gap of the indium tin oxide film is 3.6 eV, and the flexible transparent polymer polycarbonate is used as the lens main body, which has good light transmission and processability.

[0030] Further, a nanoscale subwavelength structure is deposited on the surface of the lens, when light wave acts on the subwavelength structure, usually only zero-order reflection and transmission, and high-order diffraction can be ignored, so that the subwavelength structure can significantly reduce the reflection loss of the optical surface.

[0031] Please refer to the attached Figure 4 High light transmission film 31 is provided with first nano-imprint structure 311, and the first nano-imprint structure 311 is a uniformly distributed circular nano-columnar structure.

[0032] Specifically, the microstructure can reduce the reflection of light on the surface of the lens.

[0033] Please refer to the attached drawings Figure 2 The wear-resistant film 32 is a silicon carbide film compounded on the surface of the high-transmittance film 31, which can improve the durability of the lens and prolong the service life of the lens.

[0034] Further, the reflective coating 41 is a silicon dioxide coating coated on the surface of the wear-resistant film 32, and the anti-fouling coating 42 is a polyurethane coating coated on the surface of the reflective coating 41.

[0035] Please refer to the attached drawings Figure 5 The contact angle of the polyurethane coating is 115°, and the surface of the polyurethane coating is provided with a second nano-imprint structure 421, which is a uniformly distributed pyramid-shaped polyhedron. This structure has excellent hydrophobicity and self-cleaning performance. Example Two

[0036] Based on the above example one, refer to the attached drawings Figure 6 The edge support structure 11 includes a polymethyl methacrylate reticular support strip fixed on the back of the flexible base material layer 1.

[0037] In this embodiment, the edge support structure 11 of the grid structure can provide additional mechanical support, the polymethyl methacrylate has high light transmittance and stable mechanical properties, while maintaining the lightweight and high transparency of the lens.

Claims

1. An ultra-thin lenticular lens comprising a flexible substrate layer (1), characterized in that, The super material composite layer (2), the composite coating (4), the multifunctional composite film (3) and the edge support structure (11) are also included, wherein: The flexible substrate layer (1) is polycarbonate, and the super material composite layer (2) is a micron subwavelength structure deposited on the surface of the flexible substrate layer (1); The multifunctional composite film (3) includes a high-transmittance film (31) and a wear-resistant film (32) compounded on the surface of the super material composite layer (2), and the composite coating (4) includes a reflective coating (41) and an anti-fouling coating (42) coated on the multifunctional composite film (3); The edge support structure (11) is arranged at the edge position of the flexible substrate layer (1) to enhance the mechanical strength of the lens.

2. The ultra-thin convex lens according to claim 1, wherein: The high-transmittance film (31) is an indium tin oxide film compounded on the surface of the super material composite layer (2), and the band gap of the indium tin oxide film is 3.5-3.6 eV.

3. The ultra-thin convex lens according to claim 2, wherein: The high-transmittance film (31) is provided with a first nano-imprint structure (311) on the surface, and the first nano-imprint structure (311) is a uniformly distributed circular nano-pillar structure.

4. The ultra-thin convex lens according to claim 1, wherein: The wear-resistant film (32) is a silicon carbide film compounded on the surface of the high-transmittance film (31).

5. The ultra-thin lenticular lens of claim 4, wherein: The reflective coating (41) is a silicon dioxide coating coated on the surface of the wear-resistant film (32), and the anti-fouling coating (42) is a polyurethane coating coated on the surface of the reflective coating (41).

6. The ultra-thin lenticular lens of claim 5, wherein: The contact angle of the polyurethane coating is greater than 110°, and the polyurethane coating is provided with a second nano-imprint structure (421) on the surface, and the second nano-imprint structure (421) is a uniformly distributed pyramid-shaped polyhedron.

7. The ultra-thin convex lens according to claim 1, wherein: The edge support structure (11) includes a polymethyl methacrylate reticular support strip fixed on the back of the flexible substrate layer (1).

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