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:
Nov. 25, 1997
Filed:
May. 30, 1995
Applicant:
Inventors:
Assignee:
Matsushita Electric Industrial Co., Ltd., Osaka-Fu, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01J / ; H01L / ;
U.S. Cl.
CPC ...
250239 ; 2502141 ; 250216 ; 257432 ; 437-8 ;
Abstract
In a photo-detector, a window pane member for covering a photosensitive semiconductor is selected from among plural samples having light transmittances different from each other in compliance with an intensity of output of the photosensitive semiconductor detected under a constant quantity of light incident on the photosensitive semiconductor, thereby compressing dispersion of outputs in the plural photo-detectors into a small range as a whole.