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:
Apr. 01, 2003
Filed:
Nov. 29, 2001
Hitoshi Imanari, Yokohama, JP;
Kazumitsu Takezawa, Yokohama, JP;
Nikon Corporation, Tokyo, JP;
Abstract
A position detecting device is used with a lens barrel that includes an optical system, an optical system driving member that moves at least part of the optical system, and a driving force transmitting member that transmits rotational driving force from a driving source to the optical system driving member. The position detecting device includes a linear moving member that converts rotational motion of the driving force transmitting member into a linear motion, and a detector that detects the linear movement of the linear moving member. This arrangement is capable of providing a very compact structure. The driving force transmitting member can be a rotating shaft-like member that rotates through at least one rotation. The position detecting device also can include a backlash eliminating member (e.g., a spring) that eliminates a backlash between the driving force transmitting member and the linear moving member.