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:
Nov. 25, 2003
Filed:
Mar. 05, 2002
Yoshihiro Kikuchi, Kagawa, JP;
Yukihiro Takabatake, Ehime, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A lens driving apparatus comprises a positioning dowel which rotatably supports a shaft of a driving member so as not to have a backlash. The positioning dowel is formed on a lens holding frame. A rack part and a coil spring mounting dowel are formed on the driving member. A coil spring is mounted on the coil spring mounting dowel of the driving member, and the rack part of the driving member is pressed against a feed screw of a motor by using the positioning dowel of the lens holding frame as a rotation fulcrum. The lens driving apparatus has an elastic rotating force in a direction along which the lens holding frame is made to abut a second guide pole, and a moment in a direction along which the lens holding frame is pressed against the second guide pole by self-weight of the lens holding frame, including the lens, is added to the elastic rotating force.