Color vision perception testing device

Details Color vision perception testing device Color vision perception testing device

1979-11-08

1981-08-25

Corbin, John K.

Optics: eye examining, vision testing and correcting

Spectacles and eyeglasses

Folding

358 80, G03F 308, A61B 302

Patent

active

042855802

ABSTRACT:
A controlled color source used in testing color vision perception includes a cathode ray tube capable of producing the three primary colors and at least one photo-detector array coupled directly to the tube screen for sensing the primary color output of the screen. The device also includes a microprocessor which processes the photo-detector signals and compares them with stored values having a predetermined correspondence to a desired color output of known hue, saturation, and luminance. The output of the comparison check is used to correct the drive voltage of the electron guns of the cathode ray tube, so that a precise color is displayed by the tube. A subject responds to the displayed color, and the color saturation and hue data are graphically displayed or stored for further use.

REFERENCES:
patent: 3801188 (1974-04-01), Hunt et al.
patent: 3883234 (1975-05-01), Lynn et al.

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