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:
Sep. 22, 1981
Filed:
Dec. 21, 1979
Applicant:
Inventors:
Toshio Kobori, Sakai, JP;
Masayoshi Sahara, Sennan, JP;
Assignee:
Minolta Camera Kabushiki Kaisha, Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03B / ; G03B / ; G03B / ;
U.S. Cl.
CPC ...
354 38 ; 354 / ;
Abstract
A lens exchangeable camera has two automatic exposure control modes, one of which is a program exposure control mode and the other of which is an aperture priority automatic shutter speed control mode. The program exposure control mode is selected when a diaphragm presetting ring on an exchangeable lens mounted on the camera is set to a position to preset a minimum aperture size or maximum f-number. The aperture priority automatic shutter speed control mode is selected when the diaphragm presetting ring is set to a position to preset an aperture size other than the minimum aperture.