Optics: eye examining – vision testing and correcting – Eye examining or testing instrument – Objective type
Reexamination Certificate
2005-08-09
2005-08-09
Casler, Brian L. (Department: 3737)
Optics: eye examining, vision testing and correcting
Eye examining or testing instrument
Objective type
C356S243500, C356S402000, C356S940000, C356S943000
Reexamination Certificate
active
06926407
ABSTRACT:
The invention provides an apparatus for measuring a hue of a predetermined primary color included in light reflected from a surface. The apparatus has a diffuse light source for creating incident light comprising a plurality of primary colors including the predetermined primary color, the incident light being directed onto the surface. The incident light is reflected from the surface to produce the reflected light. The apparatus also has a photometer for receiving and analyzing the reflected light to provide objective chromaticity data representing the hue of the predetermined primary color, and a scale adapted for converting the objective chromaticity data to a clinical score measuring the hue of the predetermined primary color in the reflected light.
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Casler Brian L.
Sanders John R.
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