Comparison type colorimeter

Details Comparison type colorimeter Comparison type colorimeter

G - Physics

01

J

240/145, 73/56,

G01J 3/28 (2006.01) G01N 21/25 (2006.01)

Patent

CA 1086522

ABSTRACT OF THE DISCLOSURE A comparison type colorimeter concentrates unknown and reference light beams onto the same surface area portion of a single photosensor and additionally filters the unknown and reference light beams by the same color filters and, preferably, portions thereof. Moreover, an enclosed light source produces light for the colorimeter to eliminate shift in illumination due to dust accumulation on the lamp and/or reflector of the light source.

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