Bifocal lens with inner surface in ring focus design

Abstract

The utility model relates to the technical field of bifocal lenses, in particular to a bifocal lens with an inner surface in annular focus design, which comprises a base layer, the base layer comprises a lower half area and an upper half area, the edge of the base layer is provided with at least five mounting grooves used for being matched with a lens frame, and the mounting grooves are uniformly distributed on the outer ring wall of the base layer. The two sides of the base layer are covered with protective films, each protective film is sequentially composed of a first connecting layer, a transition layer, an anti-reflection layer, an anti-blue-light layer, a hardened layer, a second connecting layer, a wear-resistant layer and a hydrophobic layer, and the two sides of the base layer are fixedly bonded with the transition layers through the first connecting layers. The anti-blue-light layer can filter blue light in an environment with blue light radiation so as to avoid damage of the blue light to eyes, meanwhile, the anti-blue-light layer can be stably arranged through the hardened layer and the transition layer, the anti-blue-light layer and other inner layer structures can be subjected to scratch-resistant protection through the wear-resistant layer contained in the protective film, and the service life of the protective film is prolonged. And the hydrophobic layer can play a role in preventing adhesion of oily water stains.

Description

TECHNICAL FIELD

[0001] The utility model relates to doublet lens technical field especially relates to a doublet lens of inner surface ring focus design. BACKGROUND

[0002] Doublet lens is a kind of special design glasses, its lens is divided into two regions, the upper half is used for distance vision, and the lower half is used for near vision.

[0003] This design can help those who need to correct distance vision and near vision at the same time, usually, the upper half of doublet lens is ordinary distance vision correction area, and the lower half has a clear boundary, called "sub-piece", for near vision correction.

[0004] The main advantage of doublet lens is convenient, users do not need to switch between different glasses, especially in the case of needing to look far and near frequently.

[0005] However, some people may need time to adapt to such glasses, because the field of view is divided into two different regions.

[0006] In addition, modern technology has also developed progressive multifocal lenses, which gradually change the focal length in the vertical direction, providing a more natural visual transition, but doublet lenses are still widely used in some cases.

[0007] Doublet lens allows users to obtain clear vision at different distances by focusing light on the distance and near use areas of the eye, when users look at a distance, they will look through the distance use area of the lens, and when looking at a near distance, they will look through the near use area.

[0008] At present, the conventional doublet lens is installed with the frame when in use, but most of the installation methods are to embed the frame and the lens with each other, which is easy to fall off when impacted, and at the same time, the doublet lens should also have the protection ability of various eye stimulating light lines for some environments with large light radiation. CONTENT OF THE UTILITY MODEL

[0009] The utility model aims at solving the above-mentioned shortcomings in the prior art and provides a doublet lens of inner surface ring focus design.

[0010] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0011] The utility model provides a design a kind of inner surface ring focus design bifocal lens, including base layer, the base layer includes lower half area and upper half area, the edge of the base layer is also provided with installation slot for frame cooperation, and the number of installation slot is at least five and evenly distributed on the outer ring wall of base layer, the both sides of the base layer are covered with protective film, the protective film is in turn by first link layer, transition layer, anti-reflection layer, blue light protection layer, hardening layer, second link layer, wear-resistant layer and hydrophobic layer, the both sides of the base layer are fixed by first link layer and transition layer adhesion, the other side of the transition layer is coated with anti-reflection layer, the surface of the anti-reflection layer is coated with blue light protection layer, the surface of the blue light protection layer is coated with hardening layer, the surface of the hardening layer is fixed by second link layer and wear-resistant layer adhesion, the surface of the wear-resistant layer is coated with hydrophobic layer.

[0012] In detail, the upper half area is an inner surface, and is designed by ring focus, and is a 1.5-2.5 times refractive index prism structure.

[0013] In detail, the first link layer and the second link layer are both made of transparent pressure sensitive adhesive material.

[0014] In detail, the transition layer is made of PET film material.

[0015] In detail, the anti-reflection layer is made of nano titanium dioxide material.

[0016] In detail, the blue light protection layer is made of nano zinc oxide material.

[0017] In detail, the hardening layer is made of transparent acrylic resin material.

[0018] In detail, the wear-resistant layer is made of polyvinyl chloride material.

[0019] In detail, the hydrophobic layer is made of nano silicon dioxide material.

[0020] The design scheme provided by the utility model has the following beneficial effects in the application process:

[0021] 1. The base of the lens has a point, so users do not need to switch different glasses or adjust the position of the glasses, but only need to look through different areas. Compared with single-vision lenses, bifocal lenses can provide more stable visual experience, especially when looking far and near at the same time.

[0022] 2. The blue light protection layer can filter blue light in an environment with blue light radiation to prevent damage to the eyes. The hardening layer and the transition layer ensure the stability of the blue light protection layer. The wear-resistant layer in the protective film structure protects the inner layer structure such as the blue light protection layer from scratches. The hydrophobic layer can prevent oil and water stains from adhering. ACCURACY OF DRAWINGS

[0023] Figure 1 It is the whole structure schematic view of the utility model;

[0024] Figure 2 It is the base layer oblique direction schematic view of the utility model;

[0025] Figure 3 It is the installation groove shape schematic view of the utility model;

[0026] Figure 4 It is the protective film composition schematic view of the utility model.

[0027] In the drawing: 10, base layer;11, lower half area;12, upper half area;13, installation groove;20, protective film;21, first connecting layer;22, transition layer;23, anti-reflection layer;24, blue light prevention layer;25, hardening layer;26, second connecting layer;27, wear-resistant layer;28, hydrophobic layer. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the utility model will be apparently and completely described in conjunction with the drawings in the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments.

[0029] Referring to Figures 1-4 A double optical lens with inner surface ring focus design, comprising a base layer 10, the base layer 10 comprises a lower half area 11 and an upper half area 12, the edge of the base layer 10 is also provided with installation grooves 13 for matching with the frame, and the number of the installation grooves 13 is at least five and is evenly distributed on the outer wall of the base layer 10, the two sides of the base layer 10 are covered with protective films 20, the protective film 20 comprises a first connecting layer 21, a transition layer 22, an anti-reflection layer 23, a blue light prevention layer 24, a hardening layer 25, a second connecting layer 26, a wear-resistant layer 27 and a hydrophobic layer 28 in sequence, the two sides of the base layer 10 are fixedly connected with the transition layer 22 through the first connecting layer 21, the other side of the transition layer 22 is coated with the anti-reflection layer 23, the surface of the anti-reflection layer 23 is coated with the blue light prevention layer 24, the surface of the blue light prevention layer 24 is coated with the hardening layer 25, the surface of the hardening layer 25 is fixedly connected with the wear-resistant layer 27 through the second connecting layer 26, and the surface of the wear-resistant layer 27 is coated with the hydrophobic layer 28.

[0030] It should be further explained that the upper half area 12 is an inner surface, and is designed as a ring focus, and is a prism structure with 1.5-2.5 times of refractive index.

[0031] It is further explained that the first and second adhesive layers 21 and 26 are made of transparent pressure-sensitive adhesive material, which is almost invisible after pasting, especially suitable for applications requiring aesthetic effect, and has high light transmittance and low haze, suitable for optical equipment, display, touch screen and other applications requiring high definition, and multiple transparent pressure-sensitive adhesive has good weather resistance, which can maintain stable bonding performance under different temperature and humidity conditions.

[0032] It is further explained that the transition layer 22 is made of PET film material, which has good optical performance and mechanical strength, and is the basis of the blue light protection film, providing support and adhesion surface for other materials.

[0033] It is further explained that the anti-reflection layer 23 is made of nano-titanium dioxide material, which has important applications in the field of optics due to its high refractive index, such as the manufacture of high-performance optical films and coatings.

[0034] It is further explained that the anti-blue light layer 24 is made of nano-zinc oxide material, which has a wide band gap and can absorb ultraviolet light and part of visible light, including blue light harmful to the eyes, by absorbing blue light, the harm of blue light to the eyes can be reduced, and the particle size of nano-zinc oxide is small, which can effectively scatter blue light, thereby further reducing the transmittance of blue light.

[0035] It is further explained that the hardening layer 25 is made of transparent acrylic resin material, which has strong adhesion and can firmly bond various materials, and has good weather resistance, which can maintain stable bonding performance under different climate conditions and is not easily affected by temperature and humidity changes, and acrylic resin adhesive usually has a faster curing speed, which can achieve high bonding strength in a short time and improve production efficiency.

[0036] It is further explained that the wear-resistant layer 27 is made of polyvinyl chloride material, which has good weather resistance and can resist ultraviolet light, temperature changes and humidity changes, and is not easy to age and become brittle, and has good corrosion resistance to a variety of chemicals, high strength and toughness, and can withstand large tensile and impact forces without being easily damaged.

[0037] It is further explained that the hydrophobic layer 28 is made of nano-silicon dioxide material, which is usually treated by chemical reaction to form a hydrophobic coating or modified layer on the surface of silicon dioxide, and common methods include surface modification using organosilane coupling agent to introduce hydrophobic groups onto the surface of silicon dioxide.

[0038] Working mode: the base of the lens makes the user not need to switch different glasses or adjust the glasses position, just need to look through different areas, compared with single-vision lens, the bifocal lens can provide more stable visual experience, especially in the case of needing to look far and near at the same time.

[0039] The blue light can be filtered by the blue light prevention layer 24 in the environment with blue light radiation, so as to avoid the harm of the blue light to the eyes, meanwhile, the hardening layer 25 and the transition layer 22 can ensure that the blue light prevention layer 24 is stable, the wear-resistant layer 27 contained in the structure of the protective film can prevent the inner layer structure such as the blue light prevention layer 24 from being scratched, and the hydrophobic layer 28 can prevent oil stains and water stains from adhering.

[0040] The above merely describes the preferred embodiments of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A bifocal lens of the internal surface toric design comprising a base layer (10), characterized in that: The base layer (10) comprises a lower half area (11) and an upper half area (12), the edge of the base layer (10) is provided with mounting grooves (13) for matching the frame, the number of the mounting grooves (13) is at least five and is uniformly distributed on the outer wall of the base layer (10), the two sides of the base layer (10) are covered with protective films (20), the protective film (20) comprises a first connecting layer (21), a transition layer (22), an anti-reflection layer (23), a blue light prevention layer (24), a hardening layer (25), a second connecting layer (26), a wear-resistant layer (27) and a hydrophobic layer (28) in sequence, the two sides of the base layer (10) are fixedly connected with the transition layer (22) through the first connecting layer (21), the other side of the transition layer (22) is coated with the anti-reflection layer (23), the surface of the anti-reflection layer (23) is coated with the blue light prevention layer (24), the surface of the blue light prevention layer (24) is coated with the hardening layer (25), the surface of the hardening layer (25) is fixedly connected with the wear-resistant layer (27) through the second connecting layer (26), and the surface of the wear-resistant layer (27) is coated with the hydrophobic layer (28).

2. A doublet lens with an inner surface toric design according to claim 1, characterized in that: The upper half area (12) is an inner surface and is designed by a ring focus, and is a prism structure with a refractive index of 1.5-2.5 times.

3. A doublet lens with an inner surface toric design according to claim 1, characterized in that: The first connecting layer (21) and the second connecting layer (26) are both made of transparent pressure-sensitive adhesive material.

4. The bifocal lens of claim 1, wherein: the inner surface is designed to have a ring focus. The transition layer (22) is made of PET film material.

5. The bifocal lens with an inner surface ring focus design according to claim 1, characterized in that: The anti-reflection layer (23) is made of nano titanium dioxide material.

6. A double glass lens of the inside surface ring focus design according to claim 1, characterized in that: The blue light prevention layer (24) is made of nano zinc oxide material.

7. The dual optic lens of claim 1, wherein: The hardening layer (25) is made of transparent acrylic resin material.

8. The dual optic lens of claim 1, wherein: The wear-resistant layer (27) is made of polyvinyl chloride material.

9. The dual optic lens of claim 1, wherein: The hydrophobic layer (28) is made of nano silicon dioxide material.

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