Intermediate-refractive index anti-blue-light impact-resistant lens and manufacturing process thereof

Abstract

The invention provides an intermediate-refractive index anti-blue-light impact-resistant lens and a manufacturing process thereof. The intermediate-refractive index anti-blue-light impact-resistant lens comprises a resin lens; hardening layers are arranged on the front surface and rear surface of the resin lens respectively; impact-resistant layers are arranged on the surfaces of the hardening layers respectively; and surface coating layers are arranged on the surfaces of the impact-resistant layers. With the intermediate-refractive index anti-blue-light impact-resistant lens and the manufacturing process thereof of the invention adopted, the cost of the lens is effectively reduced; process chains are reduced; production efficiency is improved; and the functions of the blue light resistance, impact resistance and antireflection of the lens can be simultaneously met through the functional film layers; and since the functions of the lens are realized through the film layers, the lens isalmost free of chromatic aberration.

Description

technical field [0001] The invention relates to the field of lens manufacturing, in particular to a mid-fold anti-blue light impact-resistant lens and a manufacturing process thereof. Background technique [0002] Resin lenses are currently the most common lenses in the world, with excellent optical properties, impact resistance, non-fragile, and light weight. Due to the characteristics of the resin lens itself, except for PC lenses, other resin lenses cannot block all ultraviolet rays, and the damage of ultraviolet rays to the human body cannot be ignored. At present, the lenses can only block the following wavelength bands by adding corresponding functional dyes and coatings. : [0003] UVC (short-wave ultraviolet) radiation has the shortest wavelength (100-280 nanometers); [0004] UVB (ultraviolet medium) radiation has a wavelength of 280-320 nanometers. Small amounts of UVB can penetrate the ozone layer, and 10% or less of UVB radiation can reach the surface. UVB is...

AI Technical Summary

Problems solved by technology

Although the sunburn and destructive intensity of UVA on the skin is not as good as that of UVB, it can also cause sunburn and inhibit the immune system of the skin to a large extent.

[0006] For now, UV 400 lenses can only increase the upper limit of UV blocking to 400nm, and blue-violet light around 430nm is in the high-energy band, which can cause macular degeneration in the human eye. On the display screens of computers, etc., the damage of blue-violet light to human eyes cannot be underestimated

[0007] At the same time, the safety performance of current lenses is also uneven, and the protective function of some lenses has great potential safety hazards, and it is difficult to meet the daily safety requirements.

The reason is that some of the current technology is not very perfect, although its material can temporarily guarantee a certain impact resistance, but it is difficult to maintain its performance for a long time.

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