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. 30, 2010
Filed:
May. 14, 2009
Yoshihiro Someno, Miyagi-ken, JP;
Yoshihiro Someno, Miyagi-ken, JP;
Alps Electric Co., Ltd., Tokyo, JP;
Abstract
A read head includes a light emitting member outputting a predetermined laser beam to a data recording portion, a light receiving member receiving a return beam reflected by the data recording portion and detecting data included in the return beam, a movable section mounted with the light emitting member and the light receiving member, a support mechanism swingably supporting the movable section, and a driving mechanism swinging the movable section. Here, the driving mechanism includes a magnetic field generator disposed in one of the movable section and a fixed section and a magnetic driver disposed in the other and the magnetic field generator includes a first yoke, a second yoke, and a magnet disposed between the first yoke and the second yoke, the first yoke and the second yoke are opposed to each other, and the magnetic driver includes a plurality of coils. In addition, arm portions protruding in multiple directions from one of the yokes are disposed in the coils with a movement margin, respectively.