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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.:

US 4519685 B1

PDFFull Text
Date of Patent:
May. 28, 1985

Filed:

Nov. 13, 1981

Finder for single lens reflex camera

Applicant:
Inventors:

Kikuo Momiyama, Kanagawa, JP;

Takashi Uchiyama, Kanagawa, JP;

Ryoichi Suzuki, Kanagawa, JP;

Hiroyasu Murakami, Tokyo, JP;

Masaharu Kawamura, Kawasaki, JP;

Shinji Sakai, Tokyo, JP;

Assignee:

Canon Kabushiki Kaisha, Tokyo, JP;

Attorney:

Toren, McGeady, Stanger

Primary Examiner:

John Gonzales

Int. Cl.
CPC ...
G03B / ; G03B / ;
U.S. Cl.
CPC ...
354154 ; 354155 ; 3542891 ;
Abstract

In the disclosed viewfinder, a focusing plate receives light from an objective via a reflex mirror, and after focusing, passes light to an eyepiece via a penta prism. A by-pass optical system receives light from outside the view field of the viewfinder and directs the light through an information carrier outside the optical path of the photographic light and into the penta prism so that the information can be displayed close to the view field of the viewfinder.

Find Patent Forward Citations

Momiyama, Kikuo. (1985). Finder for single lens reflex camera (U.S. Patent No. 4519685). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4519685

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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