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:
Aug. 18, 1981
Filed:
Sep. 10, 1979
John Rucker, Olympia, WA (US);
R. Ideas, Inc., Bainbridge Island, WA (US);
Abstract
A lens field of view simulator is provided to allow a photographer to view a desired photographic subject, framed as the subject would be framed viewing it through the field of view provided by a camera with a predetermined focal length lens attached. The field of view simulator includes a central portion having a viewing aperture formed therein through which the user views the subject to be photographed and a plurality of plates, each plate having a lens field of view simulation aperture formed therethrough, each of the plates being hingedly attached to the central portion to allow movement of the plates into and out of register with the viewing aperture in the central portion. Preferably, the entire simulator is fabricated as a single unit and is preferably molded of a lightweight plastic, for example, polyethylene.