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:
Mar. 26, 1996
Filed:
Apr. 18, 1994
Yoshiyuki Mizoguchi, Kanagawa, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
In a photographing device of the kind having a plurality of blades disposed one after another in an overlapping manner in the direction of the optical axis of a photo-taking lens, with an exposing aperture part for high luminance included in an exposing aperture hole formed in each of the blades, and performing exposure control for an exposure surface by driving and moving these blades relative to each other in the direction of traversing the optical axis, the fore end positions, relative to the optical axis, of the exposing aperture parts for high luminance included in the exposing aperture holes formed respectively in the blades are arranged to be located farther away from the optical axis accordingly as the blades are located farther away from the exposure surface.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile