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Test system for color vision variability

A test system and variability technology, applied in the field of color vision variability test system, can solve the problems of underestimating the variability of observers and not adopting biased observers

Pending Publication Date: 2021-12-17
纳蒂菲科股份公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the industry still has not adopted the new standard deviation observer
Standard deviation observers such as those developed by the CIE (Technical Reports CIE 70-1:2006 and CIE170-2:2006) were not accepted because the model significantly underestimated inter-observer variability

Method used

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  • Test system for color vision variability
  • Test system for color vision variability
  • Test system for color vision variability

Examples

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Embodiment Construction

[0059]In the following description, certain terms are used for convenience and is not intended to limit the invention. The term "right", "left", "upper (up)", "down", "under" is the direction in the figure. Terms include explicitly mentioned terms and their derivative words and terms with similar meanings. In addition, space relative terms, such as "beneath", "BELOW", "lower", "Above", "proXimal", "proximal "," Distal ", etc., can be used to describe a relationship between an element or feature as shown in the figure and another element or feature. These spatial relative terms are intended to cover different locations and orientations in use or operations except for the position and orientation shown in the graph. For example, if the device in the figure is flip, it is described as "" Other Elements or Features "The following" or "below", will be "above" or "above" in other components or features. Therefore, the exemplary term "below" can include the upper and lower positions and ...

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Abstract

The present invention relates to a test system for assessing color vision variability of test persons (7). The test system comprises at least two test carriers (1), wherein each of the at least two test carriers (1) is provided with a two-dimensional pattern (4) including a background (2) and a plurality of samples (3). The plurality of samples (3) and the background (2) of each one of the at least two test carriers (1) are made of at least two different dyestuff combinations representing metameric colors. The samples (3) and / or the background (2) show color scaling in at least two directions such that each one of the at least two test carriers (1) is configured to provide that a test person (7) can select a spot (PISC) from the two-dimensional pattern (4) where the metameric colors of the samples (3) and the background (2) match best. The system further comprises a test illuminant unit (5) configured to provide light for the color vision variability assessment, the light having a specific spectral power distribution. The system further comprises a processing unit (6) configured to predict a color matching function and / or to determine a congenital and / or acquired color vision deficiency of the test person (7) by calculating a variation of the spot (PISC) selected by the test person (7) as compared to a spot (PISB) computed by the processing unit (6) based on data of a predefined standard observer considering the specific spectral power distribution of the light of the test illuminant unit (5).

Description

Technical field [0001] The present invention relates to a color vision test person variability evaluation (the Variability in the) test system used. Typically, such a test system for identifying defects in a variety of color vision of a human observer and for predicting a normal observer of the color of individual color matching functions (CMF). Background technique [0002] Human lens by a gel, a little translucent fluid composition, the perceived color of the object and the reflected light is transmitted through the fluid. By passing through the lens, the visual image will be compressed and delivered to the retina, which sense and is transferred there to the optic nerve, to the brain for further transmission. [0003] Normal color vision is a three-color stimulus. Any amount specified by three color stimuli, corresponding to the three retinal cones family quantum capture (catch). Thus, the human visual system to reduce the physical information is three signal spectra, and does ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B3/06A61B3/00
CPCA61B3/0008A61B3/0016A61B3/066A61B3/0325A61B3/06A61B3/032
Inventor A·罗斯
Owner 纳蒂菲科股份公司