Discoloring process of resin lens

A resin lens and process technology, applied in the field of discoloration, can solve the problems of poor durability of film layer discoloration, difficult control of lens quality, complicated production process, etc., to achieve the effects of easy control, long service life and simple process

Inactive Publication Date: 2021-01-01
ZENNI OPTICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This process is relatively simple, but the quality of the resulting lens is not easy to control
[0004] Film-type discoloration, the very thin layer of the top film of the lens is the discoloration factor. In this case, the lens produced in this case has a good depth of discoloration, a faster discoloration speed, and better discoloration uniformity, but the process is relatively mixed. It's more complicated, and the color change durability of the film layer is not very good
[0005] Penetrating color change, the lens has a color change factor in the depth of 0.1~0.3mm, the produced lens has good color change uniformity, good color change depth, fast color change and recovery time, and the most important color change cycle is durable, but the production process is complicated. The cost of discoloration is relatively high, and lenses above 1.60 are not suitable for film-type discoloration

Method used

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  • Discoloring process of resin lens

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Such as figure 1 Shown is the structural diagram of the photochromic resin lens.

[0033] Color-changing resin lens comprises resin lens 4; Eyeglass front surface color-changing layer 3; The front surface, the front surface hardening layer 2 is attached to the surface of the lens front surface color change layer 3; the rear surface hardening layer 5 is attached to the rear surface of the resin lens 4; the front and rear surface coating layers 1, 6 are attached The surfaces of the corresponding front and rear hardening layers 2 and 5.

[0034] The resin lens 2 includes CR-39 Columbia resin, IPP, light stabilizer, dye and anti-UV additive; the color-changing layer 3 is a photochromic monomer dissolved in a color-changing hardening liquid. The coating layers 1 and 6 on the front and rear surfaces are multi-layer anti-reflection films and super waterproof films.

[0035] The photochromic lens is mainly realized through the following processes:

[0036] 1. After the cur...

Embodiment 2

[0048] Such as figure 1 Shown is the structural diagram of the photochromic resin lens.

[0049] Color-changing resin lens comprises resin lens 4; Eyeglass front surface color-changing layer 3; The front surface, the front surface hardening layer 2 is attached to the surface of the lens front surface discoloration layer 3; the rear surface hardening layer 5 is attached to the rear surface of the resin lens 4; the front and rear surface coating layers 1 and 6 are attached The surfaces of the corresponding front and rear hardening layers 2 and 5.

[0050] The resin monomer 2 includes MR series polyurethane-based monomers, MR series polyisocyanates, light stabilizers, dyes and anti-UV additives; the color-changing layer 3 is a photochromic monomer dissolved in a color-changing hardening solution. The coating layers 1 and 6 on the front and rear surfaces are multi-layer anti-reflection films and super waterproof films.

[0051] The photochromic lens is mainly realized through ...

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Abstract

The invention provides a discoloring process of a resin lens. The discoloring process comprises the following steps: a, perfoming lens pretreatment; b, preparing a color-changing hardening liquid, andadding a plasticizer; c, spin-coating the surface of the lens with the color-changing liquid; d, performing hardening and coating; and e, performing inspection. In the step b, the adding amount of discoloring powder of the discoloring liquid is 3%-8%, the content of a plasticizer is 0.1%, the content of a solvent is 20%-40%, the content of an organic silicon solution is 50%-70%, and the solvent is composed of one or more mixed solvents of ethyl alcohol, methyl alcohol and NMP. The discoloring process has the beneficial effects that the photochromic powder is added to the surface hardening layer, the cost of the photochromic lens is effectively reduced, and the production efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of discoloration, in particular to a resin lens discoloration process. Background technique [0002] Resin photochromic lenses are currently very popular due to their unique optical properties, and they have excellent characteristics such as light weight, impact resistance and non-fragility. Due to the discoloration effect of the lens, the discolored lens can effectively filter out harmful ultraviolet light and blue light outdoors, and can restore the normal lens color indoors, thereby better protecting eyesight. However, there are still many deficiencies in the current discoloration process: [0003] Polymerized discoloration, that is, the lens introduces discoloration powder during the polymerization process, but during the stirring process of discoloration powder and polymer, if the dispersion or emulsification is not good, it will be filtered out by the PP filter element in the filtration before the raw...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02C7/10G02B1/12G02B1/14
CPCG02C7/10G02C7/102G02B1/12G02B1/14
Inventor 刘锋毛良良
Owner ZENNI OPTICAL
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