A kind of preparation method of anti-infrared lens

Abstract

The invention relates to an infrared-resistant lens preparation method, and the method sequentially forms a first cladding layer, a second cladding layer and a third cladding layer on a substrate in a mode of vacuum evaporation. The substrate is a glass lens or a high molecular material lens. The first cladding layer is a silicon oxide layer, and the second cladding layer is one of a copper cladding film, a gold cladding film, a platinum cladding film and a silver cladding film or the combination of many of the copper cladding film, the gold cladding film, the platinum cladding film and the silver cladding film. The third cladding layer is an aluminium oxide layer. The lens prepared through the above method can achieve 99.5%+ / -1% attenuation of infrared light, and has an effect of thermal isolation. The surface of the lens is provided with aluminium oxide, so the lens is resistant to oxidation and wear, is durable, can avoid scratch, is good in practicality, is lower in production cost, and is very high in market popularization value.

Description

technical field [0001] The invention relates to a method for preparing a lens, in particular to a method for preparing an anti-infrared lens. Background technique [0002] During production operations, they are often in a working environment with high temperature and infrared rays, such as electric welding operations, high-temperature furnaces, high-voltage arc operations, scientific research experiments, etc.; because infrared rays have strong penetrating power to human skin and subcutaneous tissue, relevant practitioners Effective personal protection is required, especially for eye protection, and eyepieces with special functions must be worn. [0003] Existing similar protective lenses are anti-infrared lenses made by adding color masterbatch to the lens material, such as the invention patent CN 102692731B. The material used in the lens has a strong odor of color masterbatch, which affects the comfort of the wearer; and the lens material does not have thermal conductivity...

AI Technical Summary

Problems solved by technology

[0003] Existing similar protective lenses are anti-infrared lenses made by adding color masterbatch to the lens material, such as the invention patent CN 102692731B. The material used in the lens has a strong odor of color masterbatch, which affects the comfort of the wearer; and the lens material does not have thermal conductivity. and heat dissipation effect, affecting the comfort of the wearer; third, the optimal working temperature of the color masterbatch is 230 degrees Celsius to 250 degrees Celsius when producing this product, and the survival rate of the anti-infrared factor of the color masterbatch at the optimal working temperature is over 90%. Injection molding, and the working temperature of injection molding is usually 260-280 degrees Celsius, which will lead to carbonization of the color masterbatch, which will easily cause the failure of the anti-infrared factor, forming black spots, and the defective rate is as high as 20%.

[0004] Utility model patent CN 203101752 U discloses a lens structure, which includes a blue light filter layer and an impedance layer that prevents harmful rays such as infrared rays and ultraviolet rays from intruding. It is suitable for people who watch TV and computer screens for a long time, but it is not suitable for high temperature and infrared rays. environmental worker

The utility model patent CN204694934U discloses a kind of work glasses with an airgel heat-insulating protective film layer, which utilizes the poor thermal conductivity of the airgel to play the role of heat-insulation protection, which is troublesome to manufacture and fails to effectively block infrared rays

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