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Functional dyed spectacle lens

A spectacle lens, functional technology, applied in the direction of glasses/protective glasses, glasses/goggles, instruments, etc., can solve the problems of large reduction of visual transmittance and reduced transmittance.

Active Publication Date: 2016-06-29
NIKON ESSILOR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In the spectacle lens disclosed in Patent Document 2, the transmittance of the main absorption peak wavelength between 565nm and 605nm is greatly reduced, and the perceptual transmittance Y is also 14.1% to 73.4% in the examples disclosed in the Examples, etc. The reduction in visual transmittance is large

Method used

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  • Functional dyed spectacle lens

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0129] (adjustment of staining solution)

[0130] First, a dyeing liquid is adjusted as follows with a dye, a surfactant, and pure water.

[0131] Put 1000 parts by weight of pure water into a container, add 2.0 parts by weight of Kayaron Polyester Yellow AL dye (manufactured by Nippon Kayaku Co., Ltd.) parts to make staining solution 1. In addition, put 1000 parts by weight of pure water into a container, add 2.0 parts by weight of Kayalon Polyester Blue AUL-S dye (manufactured by Nippon Kayaku Co., Ltd.) as a blue dye, and 1.0 parts by weight of NikkaSanSal#7000 to prepare a dyeing solution 2. Separately, 1000 parts by weight of pure water was put into a container, and 2.0 parts by weight of Kayalon Polyesterred AUL-S dye and 1.0 part by weight of NikkaSanSal#70000 were added as a red dye to prepare dyeing solution 3 .

[0132] (Dyeing of plastic lenses and production of dyed lenses)

[0133] Next, the prepared three staining solutions 1, 2 and 3 were heated to 90°C resp...

Embodiment 2

[0146] A plastic lens (Niconlight 4AS) having a refractive index of 1.67 was immersed in the same three dyeing solutions 1, 2, and 3 as in Example 1. In the same manner as in Example 1, a hard coat film and an antireflection film were applied to the obtained dyed lens to obtain the intended dyed lens. This plastic dyed lens was attached to a spectacle frame, and the same wearing test as in Example 1 was carried out by subjects aged about 40 to 60, and sensory evaluation was performed. In addition, the spectral characteristics of the plastic dyed lens were measured.

[0147] In the sensory evaluation results of the wearing test of this plastic dyed lens, the same evaluation as in Example 1 was obtained.

[0148] In addition, the dyeing density of this plastic lens was 3.6%.

[0149] These results are shown in Table 1.

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Abstract

Provided is a functional dyed spectacle lens obtained by dyeing at least one of the surfaces of an undyed plastic lens, characterized in that the density of the color formed by dyeing which is defined as a difference in luminous transmittance between the dyed lens and the plastic lens is 2-4% and the difference in average transmittance in the wavelength range of 530-570 nm between the dyed lens and the plastic lens is 3-5%.

Description

technical field [0001] The present invention relates to functional tinted spectacle lenses. Background technique [0002] In recent years, plastic lenses are often used instead of glass lenses due to the advantages of light weight, excellent impact resistance, and ease of staining. Among them, for the purposes of cosmetic effect, eye protection, light-shielding effect, etc., the entire plastic lens for eyeglasses is actively dyed uniformly in a desired color, or dyed in a density gradient (gray scale). [0003] Furthermore, in recent years, in addition to cosmetic effects, functional dyed spectacle lenses (see Patent Documents 1 and 2) that have certain functions by dyeing have been proposed and actively sold. [0004] In particular, as a functional tinted spectacle lens, efficient blocking of blue light (380nm to 500nm), which has high energy in visible light, has become mainstream in order to impart effects such as improving contrast and reducing eye fatigue. [0005] Pa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02C7/02G02B5/22G02C7/10
CPCG02C7/10G02B5/223G02C7/108B29D11/00923G02C7/104G02C2202/10
Inventor 武富由佳川村裕子
Owner NIKON ESSILOR
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