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:
Jul. 03, 1984
Filed:
Jul. 22, 1982
Applicant:
Inventors:
Isao Kondo, Hachioji, JP;
Yukio Nakajima, Hachioji, JP;
Assignee:
Olympus Optical Co. Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03B / ; G03B / ;
U.S. Cl.
CPC ...
354418 ; 354420 ; 3152 / ;
Abstract
A camera with an electrical shutter comprises auxiliary shutter closing means which is responsive to an electrical signal supplied from an electronic flash to operate a photometric circuit of the camera in a normal manner. During a flash photographing operation using an electronic flash, if an amount of light incident on a light receiving element in the photometric circuit is less than a given value, an electrical signal which is supplied by the electronic flash upon occurrence of the flashlight illumination from a flash discharge tube is applied to the auxiliary closing means, thereby forcibly closing the shutter.