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High Energy Visible Light Filter Systems with Yellowness Index Values

A selective, light-wavelength technology, applied in optics, optical filters, optical components, etc., can solve the problems of lipofuscin toxicity, reduce dark vision sensitivity, and improve color distortion

Active Publication Date: 2020-06-16
HIGH PERFORMANCE OPTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0025] 4) Blue light causes lipofuscin to become toxic
As mentioned above, this reduces dark vision sensitivity and increases color distortion

Method used

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  • High Energy Visible Light Filter Systems with Yellowness Index Values
  • High Energy Visible Light Filter Systems with Yellowness Index Values
  • High Energy Visible Light Filter Systems with Yellowness Index Values

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0211] Example 1 : Manufactures polycarbonate lenses with an integral film containing various concentrations of blue light blocking dyes, and as Figure 45 The transmission spectrum of each lens was measured as shown in . Perylene concentrations of 35, 15, 7.6 and 3.8 ppm (weight basis) at a 2.2 mm lens thickness were used. The various metrics calculated for each lens are shown in Table IV, referenced to the Figure 45 Reference signs in . Since the selective absorbance of light depends primarily on the product of the dye concentration times the coating thickness according to Beer's law, it is believed that comparable results can be achieved using hardcoats and / or primers with or in place of the film.

[0212] Table IV

[0213]

[0214] Except for 35ppm tinted lenses, Table IV and Figure 45 All lenses described in include UV dyes commonly used in ophthalmic lens systems to suppress UV wavelengths below 380 nanometers. The photopic ratio describes normal vision and i...

Embodiment 2

[0218] Example 2: Nine patients were tested for contrast sensitivity using 1X and 2X dye concentrations with clear filters as controls. Seven of nine patients showed overall improved contrast sensitivity according to the Functional Visual Contrast Sensitivity Test (FACT). See Table VI:

[0219]

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Abstract

The present invention relates to high performance selective optical wavelength filtration providing improved contrast sensitivity, an ophthalmic system comprising a selective optical wavelength filter, where the selective filter provides improved contrast sensitivity.

Description

[0001] This application is a divisional application of the following application: the application number is 201710363855.4, the application date is October 31, 2007, and the title of the invention is "High-performance selective optical wavelength filtering that provides improved contrast sensitivity"; the application number is 201710363855.4 It is a divisional application of the following application: the application number is 200780050536.2, the application date is October 31, 2007, and the title of the invention is "High-performance selective optical wavelength filtering that provides improved contrast sensitivity". technical field [0002] The present invention relates to high performance selective optical wavelength filtering that provides improved contrast sensitivity. Background technique [0003] Electromagnetic radiation from the sun continues to bombard Earth's atmosphere. Light is made of electromagnetic radiation traveling in waves. The electromagnetic spectrum i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09F9/00G02B5/20G02C7/10
CPCG02C7/102G02C7/104
Inventor A.W.伊沙克J.N.哈多克W.科科纳斯基D.P.杜斯丁V.S.艾尔R.D.布伦S.P.麦金尼斯M.佩卡德 尤斯
Owner HIGH PERFORMANCE OPTICS
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