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Photochromic lens with double optical film layers and preparation method of photochromic lens

A color-changing lens and photochromic technology, which is applied in the direction of coating, optics, optical components, etc., can solve the problems of uneven coating thickness of sub-sheets, affecting the wearing effect, and deep color change, so as to overcome the unevenness of the double optical film Sexuality, surface shape and gloss are not affected, and the effect of discoloration is uniform

Active Publication Date: 2021-10-19
JIANGSU MAAT OPTICAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The conventional method of double-photochromic film is one-piece casting. The color change is deeper and fades slower in the near light, and the refractive index is only 1.56 and 1.60, which affects the wearing effect.
[0003] In the prior art, the current color-changing bifocal lenses are soaked or spin-coated to make the color-changing liquid adhere to the lens. When this method is used for bifocal lenses, it is easy to cause uneven coating thickness of the sub-pieces, and cannot guarantee the sub-pieces The luminosity of the film is accurate, and it is easy to have uneven discoloration and film peeling off.
Other methods such as film sticking can not achieve the ideal color changing performance

Method used

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  • Photochromic lens with double optical film layers and preparation method of photochromic lens
  • Photochromic lens with double optical film layers and preparation method of photochromic lens
  • Photochromic lens with double optical film layers and preparation method of photochromic lens

Examples

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Embodiment 1

[0059] A kind of dioptic film photochromic lens, such as figure 2 As shown, the double photochromic lens includes from the inside to the outside: a base 1, a treatment layer 2 and a photochromic layer 3; the photochromic layer 3 is cured on the surface of the treatment layer 2 by ultraviolet light irradiation, wherein, calculated according to the mass fraction, The photochromic layer 3 includes the following components: propoxylated bisphenol A dimethacrylate 30% containing 2 to 20 repeating units of propoxy; 2 to 20 repeating units containing propoxy 60% of polyethylene glycol diacrylate; 10% of pentaerythritol tetraacrylate; the rest are photoinitiators, 100% in total, calculated in parts by weight, the material of the treatment layer includes the following components: bisphenol A epoxy acrylic resin 50 parts, 5 parts of dioctyl adipate, 2 parts of vinyltrimethoxysilane and 1 part of tetrabutylammonium chloride, such as image 3 As shown, the base 1 is a one-line bifocal l...

Embodiment 2

[0067] A kind of dioptic film photochromic lens, such as figure 2 As shown, the double photochromic lens includes from the inside to the outside: a base 1, a treatment layer 2 and a photochromic layer 3; the photochromic layer 3 is cured on the surface of the treatment layer 2 by ultraviolet light irradiation, wherein, calculated according to the mass fraction, The photochromic layer 3 includes the following components: 40% of ethoxylated bisphenol A dimethacrylate containing 2 to 20 repeating units of ethoxy groups; 45% of polyethylene glycol diacrylate; dipentaerythritol 15% of hydroxypentaacrylate; the rest are photoinitiators, 100% in total, calculated in parts by weight, the material of the treatment layer includes the following components: 60 parts of bisphenol A epoxy acrylic resin, 6 parts of dioctyl adipate , 4 parts of vinyltrimethoxysilane and 2 parts of tetrabutylammonium chloride, such as Figure 4 As shown, the base 1 is a flat-top bifocal lens, including a mai...

Embodiment 3

[0076] A kind of dioptic film photochromic lens, such as figure 2 As shown, the double photochromic lens includes from the inside to the outside: a base 1, a treatment layer 2 and a photochromic layer 3; the photochromic layer 3 is cured on the surface of the treatment layer 2 by ultraviolet light irradiation, wherein, calculated according to the mass fraction, The photochromic layer 3 includes the following components: 55% alkoxylated bisphenol A dimethacrylate containing 2 to 20 repeating units of epoxy and propoxy groups; 2 to 20 repeating units containing ethoxy groups; 35% of polyethylene glycol diacrylate with 20 repeating units; 10% of dipentaerythritol hydroxypentaacrylate; the rest are photoinitiators, 100% in total; calculated in parts by weight, the material of the treatment layer includes the following components: bis 75 parts of phenol A epoxy acrylic resin, 7 parts of dioctyl adipate, 4 parts of vinyltrimethoxysilane and 2 parts of tetrabutylammonium chloride, t...

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Abstract

The invention relates to the technical field of lens manufacturing processes, in particular to a preparation method of a photochromic lens with double optical film layers. According to the technical key points, the photochromic lens with the double optical film layers comprises a substrate, a processing layer and a photochromic layer from inside to outside, and the photochromic layer is cured on the surface of the processing layer through ultraviolet irradiation. According to the preparation method of the photochromic lens with the double optical film layers, a bioptical lens is adopted as the lens substrate, and a photochromic technology and a bioptical technology are combined, so that the defect of nonuniformity of the double optical film layers caused by a spin-coating method is overcome, the photochromic layer can be uniformly attached to the surface of the lens substrate, and the photochromic lens is uniform in color change and excellent in performance; and the surface shape luminosity of the bioptical lens substrate can be ensured not to be influenced.

Description

technical field [0001] The invention relates to the technical field of lens manufacturing technology, in particular to a color-changing lens with a double optical film layer and a preparation method thereof. Background technique [0002] Bifocal lens is a lens that can effectively increase the strength of the ciliary muscle of the eye in myopia, expand the accommodation reserve, improve the vision of the ametropic eye, and reduce its diopter. Especially for teenagers. Its structure includes a main film and a sub-film, the main film is for the distance vision area, and the sub-film is for the near vision area. Photochromic lenses are originally colorless and transparent lenses. Under strong light conditions, they can become colored lenses with very low transmittance, so as to reduce harmful light and protect the eyes from damage. The conventional method of double-photochromic lenses is one-piece casting. The color change is deeper in the low beam and the color fades slower,...

Claims

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Application Information

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IPC IPC(8): G02C7/10G02C7/06C09D163/10C09D7/63C09D171/02
CPCG02C7/102G02C7/06C09D163/10C09D7/63C09D171/02C08K5/11C08K5/5425B29D11/00028B29D11/00884B29D11/00653B29D11/0073C08L63/10C08L71/00
Inventor 李军商建国
Owner JIANGSU MAAT OPTICAL CO LTD
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