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:
Jan. 19, 1982
Filed:
Apr. 23, 1980
Applicant:
Inventor:
Tsuyoshi Matsuura, Ina, JP;
Assignee:
Olympus Optical Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03B / ;
U.S. Cl.
CPC ...
354 / ; 354 51 ; 354 / ;
Abstract
A photo-electric converting element converts an incident light into a photo-electric signal corresponding to the illumination of the incident light. The photo-electric signal converted is amplified by a plurality of amplifiers. A discriminating circuit judges under which of a plurality of illumination ranges from low to high illumination the incident light corresponding to the photo-electric signal falls. In accordance with the signal of the judging circuit, an output signal is taken out from the amplifier corresponding to the illumination range of the incident light.