Optical pickup including aberration correction lens assembly

Details Optical pickup including aberration correction lens assembly Optical pickup including aberration correction lens assembly

2006-02-21

2008-08-26

Feild, Joseph (Department: 2627)

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

C369S044230, C369S044320

Reexamination Certificate

active

07417939

ABSTRACT:
An optical pickup records information on an optical recording medium and retrieves information from the optical recording medium by radiating a light beam on the optical recording medium. The optical pickup includes a light source which emits the light beam. The optical pickup also includes an object lens which directs the convergent light beam to a recording layer of the optical recording medium. The optical pickup further includes an aberration correction lens assembly located between the light source and the object lens. The aberration correction lens assembly includes at least one movable lens which is movable in an optical axis direction. The aberration correction lens assembly moves the movable lens to convert the light beam to a convergent light beam or a divergent light beam so as to correct spherical aberration. A distance between a principal plane of the aberration correction lens assembly on a light emergent side and a principal plane of the object lens falls within a range determined in accordance with a numerical aperture of the object lens, a focal length of the aberration correction lens assembly on the light emergent side, and a focal length of the object lens.

REFERENCES:
patent: 5754513 (1998-05-01), Yagi et al.
patent: 5995292 (1999-11-01), McDonald
patent: 6097691 (2000-08-01), Shimozono
patent: 6108139 (2000-08-01), Takahashi
patent: 6339577 (2002-01-01), Hineno
patent: 6418108 (2002-07-01), Ueda et al.
patent: 6469819 (2002-10-01), Aarts
patent: 6529465 (2003-03-01), Kase et al.
patent: 6590851 (2003-07-01), Kim et al.
patent: 6728179 (2004-04-01), Nakano et al.
patent: 6754161 (2004-06-01), Masuhara et al.
patent: 6798581 (2004-09-01), Yamamoto et al.
patent: 7054254 (2006-05-01), Maruyama
patent: 2002/0012313 (2002-01-01), Kimura et al.
patent: 0 800 170 (1997-10-01), None
patent: 1 043 615 (2000-10-01), None
patent: 9-325270 (1997-12-01), None
patent: 11-259906 (1999-09-01), None
patent: 2000-131603 (2000-05-01), None
European Office Action dated Mar. 11, 2005.
European Search Report dated Dec. 10, 2002.
Benno H. Hendriks et al., “Single Digital Video Recording/Digital Versatile Disk objective and plastic Digital Video Recording objective,” Jpn. J .Appl. Phys. vol. 41 (2002) pp. 1791-1797, Part 1, No. 3B, Mar. 2002, The Japan Society of Applied Physics.

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