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:
May. 12, 1992
Filed:
Jul. 23, 1990
Applicant:
Inventor:
Yoshitaka Murata, Kanagawa, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03B / ;
U.S. Cl.
CPC ...
354421 ; 354422 ; 354137 ;
Abstract
A camera comprising a semi-open type shutter which also serves as a diaphragm, a flash device, a setting circuit for setting an aperture value for flash photography, and a control circuit for varying the opening speed of the shutter in accordance with the aperture value set by the setting circuit, whereby the previously set aperture value is established with high accuracy and reliability during the flash emission.