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:
Jun. 02, 2009
Filed:
Dec. 20, 2005
Chau-yuan KE, Hsinchu, TW;
Hsiang-chieh Yu, Hsinchu, TW;
Wen-jen Ho, Hsinchu, TW;
Industrial Technology Research Institute, Hsinchu, TW;
Abstract
An objective lens actuator is provided. An objective lens holder is movably located on a ferromagnetic yoke with corresponding to inner yokes thereof to hold an objective lens. Tracking coils and focusing coils are respectively located on different two opposite sides of the lens holder and the latter are surrounded with the inner yokes. A magnetic element set is located on the ferromagnetic yoke corresponding to the coils to generate a magnetic field perpendicular to the optical axis of the lens. A suspension wire set is connected to the lens holder and the coils to hang the lens holder and channel current to the coils. A damper holder is located on a ferromagnetic yoke to allow the wire set to pass through. A printed circuit board is located on the damper holder and coupled with the wire set to provide the current to the coils, to drive the lens holder.