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. 06, 1981
Filed:
Mar. 30, 1979
Applicant:
Inventors:
Tokuichi Tsunekawa, Yokohama, JP;
Makoto Masunaga, Tokyo, JP;
Kazuya Hosoe, Machida, JP;
Yukichi Niwa, Yokohama, JP;
Mitsutoshi Owada, Yokohama, JP;
Noriyuki Asano, Kawasaki, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04N / ; H01L / ;
U.S. Cl.
CPC ...
358213 ; 358221 ; 357 24 ; 357 30 ; 3072 / ; 2502 / ;
Abstract
A photo-sensor device comprises a light receiving part composed of a plurality of photo-sensor elements for converting photosignals into electrical signals. A portion of the light receiving part is shielded by light shielding means so that in reading out the output from the device, there can be obtained also a signal of dark current information from the shielded photo-sensor elements.