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:
Mar. 05, 2002
Filed:
May. 28, 1999
Applicant:
Inventor:
Satoshi Itabashi, Chigasaki, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01T 1/24 ;
U.S. Cl.
CPC ...
G01T 1/24 ;
Abstract
Conventionally, a metal which is opaque to light has been employed for the common electrode of the pixels of a photosensor. Consequently, a common electrode line has concealed the light receiving portions of photodiodes and has lowered the opening degree of these portions, thereby decreasing light outputs and degrading S/N (signal to noise) ratios. In view of this situation, a common electrode line to which one of a pair of electrodes of each of light receiving elements is connected is formed over signal lines for transferring the light signals of the light receiving elements.