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:
Sep. 11, 1984
Filed:
Apr. 08, 1983
Katsuhiko Miyata, Tokyo, JP;
Asahi Kogaku Kogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
A device for measuring distance and light in a single lens reflex camera includes first and second mirrors, a distance measuring element, and a light measuring element which are disposed on a mirror box. The second mirror extends obliquely from a rear side of the first mirror, and the second mirror has first and second surfaces which form different angles with the first mirror. The first surface is translucent so that light is reflected from and transmitted through it, while the second surface reflects the light which is transmitted through the first surface. The first surface reflects light towards a distance measuring element, while the second surface reflects light towards a light measuring element so that the mechanical arrangement of the distance and light measuring device is simplified.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile