The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 15, 1985
Filed:
May. 07, 1982
Seisuke Hinoda, Uji, JP;
Masao Hirano, Takatsuki, JP;
Mitsutaka Kato, Kyoto, JP;
Hirohiko Yasuda, Kyoto, JP;
Omron Tateisi Electronics Co., Kyoto, JP;
Abstract
A color sensing device comprising four photo-electric transducers formed on a semiconductor substrate, an interference filter provided on the light receiving face of each transducer, a colored filter for selecting a specified transmission band of the interference filter, and three electrodes for delivering electric signals from the transducers individually, one of the electrodes being provided for two of the transducers in common. The transducers each have the area of its light receiving face so determined as to exhibit spectral sensitivity characteristics matching the color matching function of the CIE (Commission Internationale de l'Eclairage) XYZ colorimetric system.