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. 18, 2008
Filed:
Mar. 22, 2006
Dae-jong Jang, Ulwang-si, KR;
Byung-youn Song, Suwon-si, KR;
Young-bin Lee, Suwon-si, KR;
Byung-ryul Ryoo, Suwon-si, KR;
Pyong-yong Seong, Seoul, KR;
Young-won Lee, Suwon-si, KR;
Dae-jong Jang, Ulwang-si, KR;
Byung-youn Song, Suwon-si, KR;
Young-bin Lee, Suwon-si, KR;
Byung-ryul Ryoo, Suwon-si, KR;
Pyong-yong Seong, Seoul, KR;
Young-won Lee, Suwon-si, KR;
Toshiba Samsung Storage Technology Korea Corporation, Suwon-Si, KR;
Abstract
An optical recording and/or reproducing apparatus with an optical pickup actuator having high thrust. The optical pickup actuator may include a lens holder which holds an objective lens and is movably supported by a supporting unit, and a magnetic driving unit which drives the lens holder in a focusing direction, a tracking direction, and/or a tilting direction. The magnetic driving unit includes a surface-triple pole magnet portion and a coil portion. The surface-triple pole magnet portion has a plurality of polarized, i.e., differently magnetized, areas formed by facing sides of two magnets among three magnets. The coil portion includes tracking coils and tilt coils disposed to interact with the polarized areas of the surface-triple pole magnet portion and a focusing coil disposed to interact with a non-polarized area of the surface-triple pole magnet portion.