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. 17, 1995
Filed:
Nov. 04, 1994
Ryo Uehara, Yokohama, JP;
Satoshi Ejima, Tokyo, JP;
Nikon Corporation, Tokyo, JP;
Abstract
A camera having improved positioning of a variable aperture. A picture taking lens forms an image of a subject on an image forming plane. A picture taking optical system has a picture taking optical path which extends from the image forming plane to an image recording medium. The picture taking optical system receives the image formed on the image forming plane and projects the image to the image recording medium. A variable aperture is positioned in the picture taking optical path between the image forming plane and the image recording medium, and regulates light passing through the picture taking optical system without regulating light passing through a viewfinder optical system. Before an individual photograph is taken, the variable aperture is set to an aperture size which is approximately midway between the maximum aperture size and the minimum aperture size. However, when the camera is in a continuous shooting mode, a variable aperture control device sets the variable aperture to a first aperture size before a first photograph is taken and then, after the first photograph is taken, drives the variable aperture directly to a new aperture size corresponding to the next photograph. The camera also controls the camera shutter to be released after a specific, constant time from the pressing of the release button.