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:
Nov. 20, 1979
Filed:
Mar. 28, 1978
Applicant:
Inventors:
Toru Fukuhara, Fujisawa, JP;
Jun Shimomura, Tokyo, JP;
Assignee:
Nippon Kogaku K.K., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03B / ;
U.S. Cl.
CPC ...
354 59 ; 354152 ; 354227 ;
Abstract
A TTL metering device in a single lens reflex camera for measuring light passed through the picture-taking objective lens of the camera comprises a light-sensing element for receiving the light passed through the picture-taking objective lens to produce an output corresponding to the intensity of the light, a jump-up mirror having a light-transmitting area through which the light may be transmitted, and diffusion means for permitting the light transmitted through the light-transmitting area of the jump-up mirror to reach the light-sensing element.