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:
Feb. 08, 1983
Filed:
Jun. 10, 1981
Applicant:
Inventors:
Hiroshi Iwata, Nara, JP;
Tetsuo Yamaoka, Osaka, JP;
Assignee:
West Electric Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03B / ; G03B / ; G03B / ; G03B / ;
U.S. Cl.
CPC ...
354 53 ; 354 / ; 354128 ; 354289 ;
Abstract
In a camera, a device for indicating photographic exposure conditions in which an electrooptic element or window is incorporated in a finder system in such a way that when exposure conditions such as the brightness of an object, the conditions of a battery and the condition of an electronic flash device are unsatisfactory so that an erratic exposure will result, the electrooptic element or window is rendered opaque totally or intermittently so that the image of an object cannot be viewed or is hardly viewed.