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. 21, 1986
Filed:
Oct. 04, 1984
Applicant:
Inventor:
Takashi Sakamoto, Kyoto, JP;
Assignee:
Dainippon Screen Seizo Kabushiki Kaisha, Kyoto, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03B / ; G03B / ;
U.S. Cl.
CPC ...
354477 ; 354432 ; 354 76 ; 355 56 ;
Abstract
A photographic apparatus comprises a photoelectric camera arranged movably at the position of the lens of the photographic apparatus and a picture signal processing circuit connected electrically with the photoelectric camera and adapted to process picture signals, which have been input to the photoelectric camera, so as to measure given exposure conditions. It is possible to determine exposure conditions with good accuracy by measuring accurately variations in illumination conditions. The present invention allows highly-accurate measurements under preferred conditions.