CN116061474A

CN116061474A - Lens surface hardness process

Info

Publication number: CN116061474A
Application number: CN202211599726.2A
Authority: CN
Inventors: 王翔宇
Original assignee: Jiangsu Huangjinwu Optical Glasses Co ltd
Current assignee: Jiangsu Huangjinwu Optical Glasses Co ltd
Priority date: 2022-12-14
Filing date: 2022-12-14
Publication date: 2023-05-05

Abstract

The invention discloses a lens surface hardness process, which comprises the steps of providing a resin substrate formed by curing, immersing the resin substrate in sodium hydroxide solution for cleaning; then a layer of honeycomb net film is covered, the honeycomb net film is put into a spin coater, and fluorosilicone is spin-coated; removing the honeycomb net film after ultraviolet curing for 20min, and immersing the honeycomb net film in a silicon nitride solution to be immersed back and forth; taking out the resin substrate, and sending the resin substrate into clear water for ultrasonic cleaning and drying; then feeding the silicon dioxide film into a film plating machine to plate a silicon dioxide film layer in sequence; a zirconium dioxide film layer; a smoke tin oxide film layer; finally taking out the coated resin substrate, and carrying out electrostatic spraying on the photo-curing protective layer by a wet method. According to the invention, a layer of honeycomb reticular film is covered on a resin substrate, fluorosilicone is coated in a spin mode, a honeycomb fluorosilicone coating is formed after curing, then a silicon nitride solution is immersed, fluorine and silicon react and bond to form a compact hardening film layer, and adhesiveness is greatly improved. And then, an anti-reflection coating is carried out on the silicon dioxide film layer, the zirconium dioxide film layer and the tin oxide film layer.

Description

Lens surface hardness process

Technical Field

The invention belongs to the technical field of lens preparation, and particularly relates to a lens surface hardness process.

Background

The traditional glasses material is mainly a resin lens, but the resin material is softer and weaker in anti-falling performance, so that the processing difficulty of the lens is that the lens is hard, the hardness of the lens is improved, the wear resistance is improved, and the service life of the lens is prolonged. The resin lens has the problem that the hardening is difficult in actual production and processing, on one hand, the adhesion force between hardening liquid and resin lens material is weak, and on the other hand, the resin lens is soaked in the hardening liquid, and when the resin lens is taken out, the uniformity of the surface coating of the lens is difficult to ensure, so that the qualification of the quality of the lens is also a test.

Disclosure of Invention

In view of the above, the invention aims to solve the technical problems of providing a process for hardening the surface of a lens, and avoiding the troubles of poor adhesion and insufficient hardness of a hardening film layer caused by directly hardening the resin lens by soaking the resin lens in the past.

In order to solve the technical problems, the invention discloses a lens surface hardness process, which comprises the following steps:

step a, providing a resin substrate formed by curing, immersing the resin substrate into sodium hydroxide solution for cleaning and drying;

step b, covering the surface of the dried resin substrate with a layer of honeycomb net film, wherein the honeycomb net film has nanoscale meshes;

step c, placing the resin substrate covered with the honeycomb net film into a spin coater, keeping the vacuum degree less than or equal to 3 multiplied by 10 < -3 > Pa, the temperature at 50-70 ℃, introducing argon, spin coating fluorosilicone, and keeping the temperature and the pressure for 30min;

step d, removing the honeycomb net film after ultraviolet curing for 20min, and soaking the honeycomb net film in silicon nitride solution for 5 times, wherein the single soaking is carried out for 20-30s;

step e, taking out the resin substrate, and sending the resin substrate into clear water for ultrasonic cleaning and drying;

step f, the dried resin substrate is sent into a film plating machine to be plated with silicon dioxide film layers in sequence; a zirconium dioxide film layer; a smoke tin oxide film layer, and at least 3 groups are overlapped;

step g, taking out the resin substrate after coating, and carrying out photo-curing protective layer through wet electrostatic spraying;

and h, checking and packaging.

According to an embodiment of the present invention, the thickness of the honeycomb network film is 400-700 μm, and the thickness of the fluorosilicone spin coating is at least 400 μm.

According to an embodiment of the present invention, the nanoscale mesh pore size is between 80 and 600 nm.

According to an embodiment of the present invention, the thickness of the silicon dioxide film layer in the step f is 132nm, the thickness of the zirconium dioxide film layer is 75nm, and the thickness of the tin oxide film layer is 43nm.

According to an embodiment of the present invention, a silver ion layer is further coated by ion exchange after the step f.

According to an embodiment of the present invention, a zinc ion layer is further coated after the step g through ion exchange.

Compared with the prior art, the invention can obtain the following technical effects:

a layer of honeycomb reticular film is covered on a resin substrate, fluorosilicone is coated by spin coating, a honeycomb fluorosilicone coating is formed by curing, then a silicon nitride solution is immersed, fluorine and silicon react and bond to form a compact hardening film layer, and the adhesiveness is greatly improved. And then, an anti-reflection coating is carried out on the silicon dioxide film layer, the zirconium dioxide film layer and the tin oxide film layer, and finally, a photo-curing protective layer is sprayed to carry out outer protection, so that the protection durability of the lens is improved.

Of course, it is not necessary for any one product embodying the invention to achieve all of the technical effects described above at the same time.

Detailed Description

The following will describe embodiments of the present invention in detail by referring to examples, so that the implementation process of how the present invention applies technical means to solve technical problems and achieve technical effects can be fully understood and implemented.

The invention discloses a lens surface hardness process, which comprises the following steps:

step a, providing a resin substrate formed by curing, immersing the resin substrate into sodium hydroxide solution for cleaning and drying; the resin substrate is formed by filling CR-39 resin monomer into a glass mould for curing, and after curing, the resin substrate is sent into sodium hydroxide solution for cleaning, so as to remove surface stains and keep clean.

Step b, covering the surface of the dried resin substrate with a layer of honeycomb net film, wherein the honeycomb net film has nanoscale meshes; the honeycomb reticular membrane is a nano-scale hydrogel membrane, nano-scale meshes are distributed on the surface of the honeycomb reticular membrane, and the honeycomb reticular membrane can be adsorbed on the surface of the resin substrate.

Step c, placing the resin substrate covered with the honeycomb reticular membrane into a spin coater, placing the spin coater into vacuum for operation, keeping the vacuum degree less than or equal to 3 multiplied by 10 < -3 > Pa, introducing argon at the temperature of 50-70 ℃, spin-coating fluorosilicone, and keeping the temperature and pressure for 30min; wherein, argon is inert gas, fluorosilicone is liquid, and sufficient fluorine atoms are distributed in the fluorosilicone, so that the fluorosilicone can be filled into nano mesh holes, fully adsorbed on the surface of a resin substrate, and the hardness is improved.

And d, removing the honeycomb reticular membrane after ultraviolet curing for 20min, forming a fluorosilicone coating, forming the fluorosilicone coating like a honeycomb reticular structure, densely distributing honeycomb bulges on the surface, fully improving the hardness of the fluorosilicone coating, immersing the fluorosilicone coating in a silicon nitride solution for 5 times, and immersing the fluorosilicone coating for 20-30s once, wherein fluorine atoms and silicon atoms react and bond to further form a compact hardening membrane layer, and maintaining the honeycomb bulges to improve the drop resistance of the fluorosilicone coating.

And e, taking out the resin substrate, and sending the resin substrate into clear water for ultrasonic cleaning and drying, so as to keep clean for subsequent coating work.

Step f, the dried resin substrate is sent into a film plating machine to be plated with silicon dioxide film layers in sequence; a zirconium dioxide film layer; a smoke tin oxide film layer, and at least 3 groups are overlapped; the refractive index of the lens is improved, the transmission and the reflection are enhanced, and the interference of stray strong light is reduced by plating three oxide film layers.

And g, taking out the coated resin substrate, and forming an outer protective layer by spraying a photo-curing protective layer through wet electrostatic spraying, so that the hardness is further enhanced, and the protection is improved.

And h, inspecting and packaging, checking whether bubbles exist on the surface, and removing unqualified products.

In a preferred embodiment, the thickness of the honeycomb network film is 400-700 μm, so that the spin-coating thickness of the spin-coated fluorosilicone is at least 400 μm, and the film has enough bump height to form an independent micro light unit, thereby enhancing the anti-reflection effect of light.

Further, the aperture of the nanometer mesh is 80-600nm, the gap is nanometer, and the molecular filling is fully intact.

In one embodiment of the invention, in the step f, the thickness of the silicon dioxide film layer is 132nm, the thickness of the zirconium dioxide film layer is 75nm, the thickness of the tin oxide film layer is 43nm, the nanoscale film layer is plated, and three layers are overlapped, so that the refractive index can be continuously adjusted, the light transmission is enhanced, and the stray strong light interference is reduced.

In addition, a silver ion layer is covered by ion exchange after the step f, so that the effect of further protection is achieved. And (g) coating a zinc ion layer through ion exchange to play a role in sterilization.

In summary, according to the invention, a layer of honeycomb reticular film is covered on a resin substrate, fluorosilicone is coated in a spin mode, a honeycomb fluorosilicone coating is formed after curing, then a silicon nitride solution is immersed, fluorine and silicon react and bond to form a compact hardening film, and adhesiveness is greatly improved. And then, an anti-reflection coating is carried out on the silicon dioxide film layer, the zirconium dioxide film layer and the tin oxide film layer, and finally, a photo-curing protective layer is sprayed to carry out outer protection, so that the protection durability of the lens is improved.

While the foregoing description illustrates and describes the preferred embodiments of the present invention, it is to be understood that the invention is not limited to the forms disclosed herein, but is not to be construed as limited to other embodiments, and is capable of numerous other combinations, modifications and environments and is capable of changes or modifications within the scope of the inventive concept as described herein, either as a result of the foregoing teachings or as a result of the knowledge or technology in the relevant art. And that modifications and variations which do not depart from the spirit and scope of the invention are intended to be within the scope of the appended claims.

Claims

1. A lens surface hardness process comprising:

and h, checking and packaging.

2. The lens surface hardness process of claim 1 wherein said honeycomb network film thickness is 400-700 μm and said fluorosilicone spin-on thickness is at least 400 μm.

3. The lens surface hardness process according to claim 1, wherein the nanoscale mesh pore size is between 80-600 nm.

4. The lens surface hardness process according to claim 1, wherein the silica film thickness in step f is 132nm, the zirconia film thickness is 75nm, and the tin oxide film thickness is 43nm.

5. The lens surface hardness process according to claim 1, wherein a silver ion layer is further coated by ion exchange after step f.

6. The lens surface hardness process according to claim 1, wherein said step g is further followed by ion exchange coating with a zinc ion layer.