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:
Oct. 11, 1977
Filed:
Dec. 19, 1975
Jun Shimomura, Tokyo, JA;
Nippon Kogaku K.K., Tokyo, JA;
Abstract
In a single lens reflex camera having a metering device, a principal mirror is provided for reflecting part of the light passing through an objective lens toward a finder optical system and for transmitting therethrough the remainder of the light. First optical means including a reflector member are disposed between the principal mirror and photographic film in inclined relationship with the optical axis of the objective lens. A condensing mirror extends between the image of an object formed by the objective lens and the first optical means and the light-receiving portion of the metering device. An image-forming half-lens is provided on the condensing mirror to condense the image of the object toward the light-receiving portion by cooperating with the condensing mirror. The optical axis of the half-lens is substantially coincident with the reflecting surface of the condensing mirror.