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:
Dec. 26, 1978
Filed:
Apr. 05, 1977
Applicant:
Inventor:
Teruo Hagiwara, Kawagoe, JP;
Assignee:
Asahi Kogaku Kogyo Kabushiki Kaisha, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
G02B / ; G03B / ; G03B / ;
U.S. Cl.
CPC ...
354224 ; 350 49 ; 354152 ;
Abstract
An angle finder housing 8 attachable to the viewfinder eye piece 6 of an SLR camera mounts a bent axis telescopic optical system 8a-8d and a rotatable revolver cylinder 7 offset from but parallel to the optical axis. The cylinder 7 has a through passage 7b, a magnifying lens 7c, and a solid portion 7d spaced from but parallel to each other, whereby the cylinder may be selectively rotated to dispose the passage, the magnifying lens, or the solid portion in the optical axis to implement picture composition, accurate focusing, or reverse incident light blockage, respectively.