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:
Apr. 27, 1982
Filed:
Feb. 12, 1980
Applicant:
Inventor:
Toshikazu Ichiyanagi, Mitaka, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03B / ;
U.S. Cl.
CPC ...
354 53 ; 354 / ; 354198 ; 354286 ; 354289 ;
Abstract
The disclosed device responds to the focal length of a camera's lens to display a first range of shutter times at which a camera can safely be held manually and a second range in which it cannot, and also displays the exposure controlling time. The shutter time for producing an exposure is displayed and compared with these ranges to determine whether the camera can safely be hand held.