Optical pickup

Details Optical pickup Optical pickup

2005-01-04

2005-01-04

Tran, Thang V. (Department: 2653)

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

C369S112180

Reexamination Certificate

active

06839314

ABSTRACT:
An optical pickup is provided which includes a light source, an optical system for converging a laser beam emitted from the light source, and an optical element having a function of increasing a numerical aperture of the optical system, wherein recording and/or reproducing information on a recording medium is performed by using the laser beam from the light source while the optical element is brought in contact with or in close to the recording medium, and the optical element has a contamination-preventing structure.

REFERENCES:
patent: 5125750 (1992-06-01), Corle et al.
patent: 5729393 (1998-03-01), Lee et al.
patent: 5764613 (1998-06-01), Yamamoto et al.
patent: 6069853 (2000-05-01), Novotny et al.
patent: 6108292 (2000-08-01), Zijp
patent: 6256267 (2001-07-01), Hatam-Tabrizi
patent: 6307689 (2001-10-01), Ichimura et al.
patent: 6307832 (2001-10-01), Novotny et al.
patent: 6320708 (2001-11-01), Ueyanagi et al.
patent: 6449221 (2002-09-01), Knight et al.
patent: 2553275 (1996-08-01), None
patent: 8-315404 (1996-11-01), None
Nikkei Electronics, pp. 99-105M BI, 691, Published on Jun. 16, 1997.

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