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. 24, 2002
Filed:
Dec. 06, 2001
Akio Omiya, Saitama, JP;
Fuji Photo Optical Co., Ltd., Saitama, JP;
Abstract
A driving gear is rotated in cooperation with zooming of a taking lens. The driving gear and a cam cylinder are attached to an axis that is supported by a finder frame. A projection of the driving gear is inserted into a cutout of the cam cylinder. Since the projection contacts with an edge of the cut out on zooming the taking lens, the rotation of the driving gear is transmitted to the cam cylinder. The cam cylinder moves a finder zoom system to change finder magnification. When the driving gear makes a reverse rotation for absorbing the backlash of the taking lens or focusing, the driving gear makes an idle rotation only for the space between the cutout and the projection. The finder magnification is unchanged while the driving gear is idly rotating. On screwing an adjustment screw of the finder frame, the cylindrical cam moves towards an axial direction. The finder visibility is adjusted as zoom lenses move together.