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. 20, 2007
Filed:
May. 25, 2004
Yoshihiro Someno, Miyagi-ken, JP;
Yoshihiro Someno, Miyagi-ken, JP;
Alps Electric Co., Ltd., Ota-Ku, Tokyo, JP;
Abstract
There is disclosed a high precision positioning apparatus capable of realizing accurate positioning of a recording medium with respect to an optical system by minute movement at a relatively low cost. The high precision positioning apparatus comprises a driving unitfor minutely moving a flat-plate shaped recording medium, which records/reproduces information using light, with respect to an optical system in an in-plane direction of the recording medium. The driving unitcomprises a frame-shaped unit body, a first drive frameaccommodated inside the unit body, and a second drive frameaccommodated inside the first drive frameand fixed in the vicinity of a recording portionof the recording medium. The first drive framefreely moves with respect to the unit bodyby means of micro-driving elementsin an in-plane direction of the recording medium, and the second drive framefreely moves with respect to the first drive frameby means of micro-driving elementsin an in-plane direction of the recording medium, in a direction substantially perpendicular to the direction in which the first drive framemoves. Therefore, the recording mediumis minutely moved in an in-plane direction thereof.