Multi-angle colorimeter

Details Multi-angle colorimeter Multi-angle colorimeter

2007-08-28

2007-08-28

Punnoose, Roy M. (Department: 2886)

Optics: measuring and testing

By shade or color

C356S405000

Reexamination Certificate

active

11159666

ABSTRACT:
In a multi-angle colorimeter having an illumination system that illuminates a sample surface and a plurality of light receiving systems that receive reflected light therefrom, an illumination system for orientation error detection is provided that illuminates the sample surface from substantially close direction to the normal of the sample surface. Actual measured reflectance factor is corrected based on the specific approximation function obtained from the measured reflectance factor and detected orientation error.

REFERENCES:
patent: 6707553 (2004-03-01), Imura

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