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. 03, 1996
Filed:
Jul. 19, 1994
Kazutoshi Shiratori, Hino, JP;
Olympus Optical Co., Ltd., Tokyo, JP;
Abstract
A viewfinder unit in a camera has a viewfinder objective optical system that contributes to formation of an object image. The camera viewfinder unit comprises an inversion optical system composed of a first prism and a second prism both providing an object image formed in the vicinity of a field mask by a viewfinder objective optical system in the form of a correct image and then guiding the object image to an eyepiece lens, a center of a first reflector plane of the second prism associated with a center of a viewfinder field and a periphery of the first reflector plane thereof associated with an outside of the viewfinder field, each of which is made by coating the first reflector plane with a translucent half mirror, and an LCD located at a position dependent on the first reflector plane of the second prism, which is optically equivalent to a position of image formation in a viewfinder objective optical system, opposed to the center and periphery of the first reflector surface, and designed to display viewfinder information.