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:
Jan. 25, 1977
Filed:
Jul. 22, 1975
Applicant:
Inventor:
Jun Shimomura, Tokyo, JA;
Assignee:
Nippon Kogaku K.K., Tokyo, JA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03B / ;
U.S. Cl.
CPC ...
354 / ; 354152 ;
Abstract
A photometric device for a through the lens type exposure meter in a single lens reflex camera. The reflecting mirror provides a region transmitting a part of the light rays incident thereon. The light passing through said region is reflected by a reflecting-concentrating member and received by a light receiving member, the surface of which is adjacent to the film and disposed on or in the vicinity of the optical axis of the phototaking lens. The reflecting-concentrating member is disposed to substantially cover the photometry range of the film and the optical axis of the reflecting-concentrating member is substantially coincident with the optical axis of the phototaking lens.