Anti-falling pressure-resistant photochromic lens

Abstract

The invention discloses an anti-falling and pressure-resistant photochromic lens which comprises a lens body, and the lens body is provided with a main optical part and an anti-falling and pressure-resistant end part located on the edge of the main optical part. The hardening layer is dip-coated on the lens body; the prime coat protection layer is spin-coated on the surface of the hardening layer and is positioned on the upper side of the main optical part; the photochromic layer is sprayed on the surface of the prime coat protective layer; the surface coating protection layer is spin-coated on the surface of the photochromic layer; the anti-reflection layer is plated on the surface of the surface coating protection layer; the silicon nitride film layer is evaporated on the surface of the anti-reflection layer through an electron gun; wherein a titanium carbide powder layer is arranged on the surface of the anti-falling pressure-resistant end part. The anti-falling and pressure-resistant end part is arranged at the edge of the end part of the lens body, the titanium carbide powder layer is attached to the end part, the anti-falling and pressure-resistant performance of the end part is enhanced, the film layer adopts the bottom coating and the surface coating to protect the photochromic layer in the middle, the color changing effect is ensured, and the anti-reflection performance of the lens is improved through the anti-reflection layer.

Description

Technical Field

[0001] The invention belongs to the technical field of lenses, and in particular relates to a drop-resistant and pressure-resistant photochromic lens. Background Art

[0002] Resin photochromic lenses are currently very popular because of their unique optical properties, and excellent features such as light weight, impact resistance and non-breakable. Due to the photochromic effect of the lens, the lens can effectively filter out harmful ultraviolet light and blue light after discoloration outdoors, and can restore the normal lens color indoors, so it can better protect eyesight. However, there are still some problems with current photochromic lenses. For example, after being bumped or dropped, it will cause cracks at the ends, affecting use. In addition, the cracks will also spread with the resin body, and then affect the color change effect and the overall surface transmittance. The scratch-resistant film coating will also affect the transmittance of the lens, reducing the overall wearing comfort.

[0003] Therefore, a drop-resistant and pressure-resistant photochromic lens is in urgent need of research. Summary of the invention

[0004] In view of this, the technical problem to be solved by the present invention is to provide a drop-resistant and pressure-resistant photochromic lens, which is used to avoid the problems of poor drop resistance at the ends of the previous photochromic lenses and insufficient light transmittance.

[0005] In order to solve the above technical problems, the present invention discloses a drop-resistant and pressure-resistant photochromic lens, which comprises: The lens body comprises a main optical part and an anti-drop and pressure-resistant end portion located at the edge of the main optical part; A hard layer dip-coated on the lens body; A primer protective layer spin-coated on the surface of the hardened layer and located on the upper side of the main optical part; A photochromic layer sprayed on the surface of the primer protective layer; A topcoat protective layer spin-coated on the surface of the photochromic layer; An anti-reflection layer coated on the surface of the topcoat protective layer; and A silicon nitride film layer is deposited on the surface of the anti-reflection layer by electron gun evaporation; Among them, a titanium carbide powder layer is arranged on the surface of the drop-resistant and pressure-resistant end portion.

[0006] According to one embodiment of the present invention, the above-mentioned drop-resistant and pressure-resistant end portion is ring-shaped, and the ring width is 2-4 mm.

[0007] According to one embodiment of the present invention, the primer protective layer and the top coating protective layer are both configured as ultraviolet light curing UV layers.

[0008] According to an embodiment of the present invention, the photochromic layer is provided as a coating containing a photochromic material, and its thickness gradually decreases from 6.5 ± 0.5 μm to 0 μm from the upper side to the lower side of the lens body. According to an embodiment of the present invention, the antireflection layer is provided with 7 layers, successively including a first silicon dioxide layer with a film thickness of 80 - 142 nm; a second zirconium dioxide layer with a film thickness of 30 - 65 nm; a third silicon dioxide layer with a film thickness of 83 - 156 nm; a fourth zirconium dioxide layer with a film thickness of 45 - 86 nm; a fifth silicon dioxide layer with a film thickness of 96 - 185 nm; a sixth zirconium dioxide layer with a film thickness of 56 - 110 nm; a seventh silicon dioxide layer with a film thickness of 110 - 210 nm, wherein the thicknesses of both the silicon dioxide layer and the zirconium dioxide layer gradually increase from the inside to the outside, and the thickness of the zirconium dioxide layer is less than the thickness of the adjacent silicon dioxide layer.

[0009] According to an embodiment of the present invention, grooves are formed on the surface of the anti - drop and pressure - resistant end by etching, and the grooves are filled with titanium carbide powder through a resin adhesive to form a layer of titanium carbide powder layer, and the titanium carbide powder layer is 0.2 - 0.5 mm higher than the main optical part.

[0010] Compared with the prior art, the present invention can achieve the following technical effects: By providing an anti - drop and pressure - resistant end at the edge of the lens body and attaching a layer of titanium carbide powder layer, its anti - drop and pressure - resistance at the end are enhanced. The film layer uses a primer coating and a top coating to protect the middle photochromic layer to ensure the color - changing effect, and the antireflection layer improves the light transmittance of the lens.

[0011] Of course, it is not necessary for any product implementing the present invention to achieve all the above - mentioned technical effects simultaneously. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings: Figure 1 is a schematic diagram of the film layer of the anti - drop and pressure - resistant photochromic lens according to an embodiment of the present invention; Figure 2 is a schematic diagram of the surface shape of the anti - drop and pressure - resistant photochromic lens according to an embodiment of the present invention. REFERENCE SIGNS

[0013] Lens body 10, main optical part 11, anti - drop and pressure - resistant end 12, hardening layer 20, primer coating protection layer 30, photochromic layer 40, top coating protection layer 50, antireflection layer 60, silicon carbide film layer 70, titanium carbide powder layer 80. DETAILED DESCRIPTION OF THE INVENTION

[0014] The embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings and examples, so as to fully understand how the present invention uses technical means to solve technical problems and achieve the realization process of technical effects and implement accordingly.

[0015] Please refer to Figure 1 And Figure 2 , Figure 1 is a schematic diagram of the film layer of the anti-drop and pressure-resistant photochromic lens according to an embodiment of the present invention; Figure 2 is a schematic diagram of the surface shape of the anti-drop and pressure-resistant photochromic lens according to an embodiment of the present invention.

[0016] As shown in the figure, an anti-drop and pressure-resistant photochromic lens includes: a lens body 10, the lens body 10 having a main optical part 11 and an anti-drop and pressure-resistant end part 12 located at the edge of the main optical part 11; a hardening layer 20 dip-coated on the lens body 10; a bottom coating protection layer 30 spin-coated on the surface of the hardening layer 20 and located on the upper side of the main optical part 11; a photochromic layer 40 sprayed on the surface of the bottom coating protection layer 30; a surface coating protection layer 50 spin-coated on the surface of the photochromic layer 40; an anti-reflection layer 60 deposited on the surface of the surface coating protection layer 50; and a silicon nitride film layer 70 deposited on the surface of the anti-reflection layer 60 by an electron gun; wherein, a titanium carbide powder layer 80 is provided on the surface of the anti-drop and pressure-resistant end part 12.

[0017] In an embodiment of the present invention, the lens body 10 is formed by resin curing, wherein the center is the main optical part 11, which is circular, and the edge of the end part is set as the anti-drop and pressure-resistant end part 12 for strengthening the anti-drop protection of the end part.

[0018] The surface of the lens body 10 is dip-coated with a hardening layer 20 in a hardening solution, which can be set as a silicone film layer for enhancing the hardness of the lens body 10. The bottom coating protection layer 30 and the surface coating protection layer 50 are spin-coated by a spin coater to protect the middle photochromic layer 40. The photochromic layer 40 is set as a coating containing a photochromic material, and its thickness gradually decreases from 6.5 ± 0.5 μm to 0 μm from the upper side to the lower side of the lens body 10, forming a gradual color-changing effect. During the switching process from indoors to outdoors, the color change is more gentle, reducing eye accommodation fatigue. The anti-reflection layer 60 is used to improve the anti-reflection performance of the lens and reduce the interference of stray light. A silicon nitride film layer 70 is attached to the outermost layer to improve the surface scratch and pressure resistance.

[0019] Preferably, both the bottom coating protection layer 30 and the surface coating protection layer 50 are set as ultraviolet curable UV layers, with good protection effect and strong light transmittance.

[0020] In addition, a layer of titanium carbide powder layer 80 is also provided on the anti-drop and pressure-resistant end part 12 to achieve the anti-drop protection of the end part.

[0021] Specifically, the anti-drop and pressure-resistant end portion 12 is annular, and the annular width is 2-4 mm. The surface of the anti-drop and pressure-resistant end portion 12 is formed with groove textures by etching. The groove textures are filled with titanium carbide powder through resin glue to form a layer of titanium carbide powder layer 80, and the titanium carbide powder layer 80 is 0.2-0.5 mm higher than the main optical portion. In this embodiment, while the groove textures enhance wear resistance, they provide groove filling with titanium carbide powder, and at the same time combine with resin glue to enhance adhesion, so that the titanium carbide powder fully combines with the anti-drop and pressure-resistant end portion 12 of the lens body 10, avoiding peeling off with the temperature environment, and the durability is improved. The titanium carbide powder layer 80 has high strength and strong anti-drop and pressure resistance.

[0022] The anti-reflection layer 60 is provided with 7 layers, successively including the first layer of silicon dioxide layer with a film layer thickness of 80-142 nm; the second layer of zirconium dioxide layer with a film layer thickness of 30-65 nm; the third layer of silicon dioxide layer with a film layer thickness of 83-156 nm; the fourth layer of zirconium dioxide layer with a film layer thickness of 45-86 nm; the fifth layer of silicon dioxide layer with a film layer thickness of 96-185 nm; the sixth layer of zirconium dioxide layer with a film layer thickness of 56-110 nm; the seventh layer of silicon dioxide layer with a film layer thickness of 110-210 nm. The thicknesses of the silicon dioxide layer and the zirconium dioxide layer both gradually increase from the inside to the outside, and the thickness of the zirconium dioxide layer is less than the thickness of the adjacent silicon dioxide layer, which is used to improve the anti-reflection effect of the lens body 10.

[0023] In summary, the present invention enhances the anti-drop and pressure resistance of the end portion of the lens body by providing an anti-drop and pressure-resistant end portion at the end edge of the lens body, attaching a layer of titanium carbide powder layer, the film layer uses a primer and a topcoat to protect the middle photochromic layer to ensure the color-changing effect, and the anti-reflection layer improves the anti-reflection property of the lens.

[0024] The above description shows and describes several preferred embodiments of the present invention. However, as mentioned above, it should be understood that the present invention is not limited to the form disclosed herein, should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be changed within the scope of the inventive concept described herein through the above teachings or the techniques or knowledge in related fields. And the changes and modifications made by those skilled in the art without departing from the spirit and scope of the present invention should all be within the protection scope of the appended claims of the present invention.

Claims

1. A drop-resistant and pressure-resistant photochromic lens, characterized in that: include: A lens body, wherein the lens body has a primary optical portion and an anti-drop and pressure-resistant end portion located at an edge of the primary optical portion; Dip-coated on the hardening layer of the lens body; A primer protective layer spin-coated on the surface of the hardened layer and located on the upper side of the primary optical part; A photochromic layer sprayed on the surface of the primer protective layer; A topcoat protective layer spin-coated on the surface of the photochromic layer; An anti-reflection layer plated on the surface of the topcoat protective layer; as well as A silicon nitride film layer is deposited on the surface of the anti-reflection layer by electron gun evaporation; Wherein, a titanium carbide powder layer is provided on the surface of the drop-resistant and pressure-resistant end portion.

2. The drop-resistant and pressure-resistant photochromic lens according to claim 1, characterized in that: The drop-resistant and pressure-resistant end portion is in a ring shape, and the ring width is 2-4 mm.

3. The drop-resistant and pressure-resistant photochromic lens according to claim 1, characterized in that: The primer protective layer and the top coating protective layer are both configured as ultraviolet light curing UV layers.

4. The drop-resistant and pressure-resistant photochromic lens according to claim 1, characterized in that: The photochromic layer is configured as a coating containing a photochromic material, and the thickness thereof gradually decreases from 6.5±0.5 μm to 0 μm from the upper side to the lower side of the lens body.

5. The drop-resistant and pressure-resistant photochromic lens according to claim 1, characterized in that: The anti-reflection layer is set to 7 layers, which include, in sequence, a first silicon dioxide layer with a film thickness of 80-142nm; a second zirconium dioxide layer with a film thickness of 30-65nm; a third silicon dioxide layer with a film thickness of 83-156nm; a fourth zirconium dioxide layer with a film thickness of 45-86nm; a fifth silicon dioxide layer with a film thickness of 96-185nm; a sixth zirconium dioxide layer with a film thickness of 56-110nm; and a seventh silicon dioxide layer with a film thickness of 110-210nm, wherein the thicknesses of the silicon dioxide layer and the zirconium dioxide layer gradually increase from the inside to the outside, and the thickness of the zirconium dioxide layer is less than the thickness of the adjacent silicon dioxide layer.

6. The drop-resistant and pressure-resistant photochromic lens according to claim 1, characterized in that: The surface of the drop-resistant and pressure-resistant end portion is formed into a groove texture by etching, and the groove texture is filled with titanium carbide powder by resin glue to form a titanium carbide powder layer, and the titanium carbide powder layer is 0.2-0.5mm higher than the main optical part.

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