Optical pickup unit, apparatus for recording/reproducing...

Details Optical pickup unit, apparatus for recording/reproducing... Optical pickup unit, apparatus for recording/reproducing...

2011-08-30

2011-08-30

Chow, Van N (Department: 2627)

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

C369S044230, C369S112240

Reexamination Certificate

active

08009524

ABSTRACT:
An optical pickup unit, an apparatus for recording/reproducing data, a control method, and a recording medium are disclosed. Each of the optical pickup unit and the recording/reproducing apparatus includes a near-field lens, and uses a high-refraction lens, conically shaped, to effectively use the near-field. Two lens units are required to be compatible with a conventional recording medium. The lens unit is designed in consideration of a distance between the recording medium and the lens, and the tilt or vibration of the lens units is controlled.

REFERENCES:
patent: 4973520 (1990-11-01), Takada et al.
patent: 6104675 (2000-08-01), Hatam-Tabrizi
patent: 7353808 (2008-04-01), Kakoo
patent: 2003/0218946 (2003-11-01), Huang et al.
patent: 2005/0083813 (2005-04-01), Ogasawara
patent: 1 684 279 (2006-07-01), None
patent: 2001-006206 (2001-01-01), None
patent: 2002-0015201 (2002-02-01), None
International Search Report issued Mar. 17, 2008 by the Austrian Patent Office in counterpart International Application No. PCT/KR2007/005011.
Chinese Office Action for corresponding Application No. 2007-80038670 dated Aug. 4, 2010.

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