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. 12, 1983
Filed:
Oct. 19, 1981
Applicant:
Inventor:
Katsuhiko Tsunefuji, Hachioji, JP;
Assignee:
Olympus Optical Company Ltd., , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03B / ; G02B / ;
U.S. Cl.
CPC ...
354152 ; 354224 ; 350172 ;
Abstract
A movable reflecting mirror for single lens reflex camera is adapted to permit photometry by utilizing part of the light from an object being photographed which has been transmitted through the reflecting mirror. A transmitting area is formed in part of the reflector of the mirror in a manner such that light incident on the reflecting mirror in the region of the transmitting area and reflected by the rear surface of the reflecting mirror is reflected again by the rear surface of the reflector.