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Method and system for selecting a color filter, optical article comprising such a color filter

A color filter, colored technology, applied in the field of optometry, can solve the problem of no visual performance quantification, and achieve the effect of improving temporal acuity

Active Publication Date: 2020-07-24
ESSILOR INT CIE GEN DOPTIQUE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In other words, there is no objective quantification of visual performance for optimal color filter selection

Method used

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  • Method and system for selecting a color filter, optical article comprising such a color filter
  • Method and system for selecting a color filter, optical article comprising such a color filter
  • Method and system for selecting a color filter, optical article comprising such a color filter

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Embodiment Construction

[0046]The following description, given by way of non-limiting example with reference to the accompanying drawings, will enable a clear understanding of what the invention consists of and how it is practiced.

[0047] In the attached picture:

[0048] - figure 1 is a schematic diagram showing a subject placed in front of a color monitor to test his contrast sensitivity and find the best color filter;

[0049] - figure 2 is shown figure 1 A graph of the emission spectrum curves of two color guns for producing colored visual stimuli for a color display of ;

[0050] - image 3 and Figure 4 is for testing figure 1 Schematic diagram of two sinusoidal gratings of subjects' contrast sensitivity;

[0051] - Figure 5 is shown figure 1 Plots of the standard photon absorption probability curves for the S cones, M cones, and L cones of the subjects, each individually normalized by its maximum value;

[0052] - Figure 6 is shown for four different subjects with figure 2 A ...

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Abstract

The invention relates to a method for selecting a color filter intended to be worn by a subject in order to improve his visual performance for a given visual task to be realized in a given environment. According to the invention, said method comprises the steps of: submitting said subject to a colored spatio-temporal visual stimulus adapted to evaluate said visual performance for said given visualtask, said stimulus being designed so that its chromaticity may be modified; evaluating the visual performance of the subject based on his visual perception of said visual stimulus, the chromaticityof the visual stimulus taking at least two distinct values, each chromaticity being uniform; and selecting said color filter based on the results of said evaluation. The invention further proposes anoptical article comprising such a color filter. The invention finally provides a system for selecting a color filter using said method.

Description

technical field [0001] The present invention relates to the field of optometry and to the selection of color filters according to the sensitivity of the wearer. [0002] More precisely, the invention relates to a method for selecting a color filter intended to be worn by a subject to improve his / her visual performance for a given visual task to be performed in a given environment. [0003] The invention also proposes an optical article comprising color filters selected using this selection method. [0004] Another object of the present invention is to provide a system for selecting color filters using the selection method. Background technique [0005] As is well known in the field of ophthalmic filters, color filters (also called "color filters") can be adjusted according to environmental conditions (brightness level, spectral content of ambient lighting, spatial and / or temporal frequency), visual tasks (reading , driving...), and observer factors (such as age, race, dise...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02C7/10A61B3/06
CPCA61B3/066G02C7/104G02C7/024
Inventor R·阿拉德D·西尔维斯特Y·钱吉蒂
Owner ESSILOR INT CIE GEN DOPTIQUE
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