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. 11, 2000
Filed:
Jun. 15, 1994
Applicant:
Inventors:
Shinji Tominaga, Minamikawachi-Gun, JP;
Takehiro Katoh, Nara, JP;
Takashi Okada, Osaka, JP;
Hiroyuki Okada, Sakai, JP;
Dai Shintani, Sakai, JP;
Katsuyuki Nanba, Osakasayama, JP;
Assignee:
Minolta Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03B / ;
U.S. Cl.
CPC ...
396 64 ; 396449 ;
Abstract
A camera provided with an aperture controllable shutter capable of determining exposure by varying aperture movement, and a photographic lens capable of varying focal length. In accordance with the focal length of the photographic lens, an aperture size or an aperture characteristic of the aperture controllable shutter is determined. A diaphragm of the aperture controllable shutter is driven based on the determined aperture size, aperture characteristic and object brightness.