Optical pickup device and optical disc reproducing apparatus

Details Optical pickup device and optical disc reproducing apparatus Optical pickup device and optical disc reproducing apparatus

1997-03-27

2000-01-18

Hindi, Nabil

Dynamic information storage or retrieval

Specific detail of information handling portion of system

Radiation beam modification of or by storage medium

369 58, G11B 700

Patent

active

060163011

ABSTRACT:
An optical pickup device which assures interchangeability between plural types of optical discs with different layered structures, such as CD, CD-R or DVD, which is reduced in size and which realizes reproduction of high reliability information signals. The pickup device includes a light source for radiating laser light beams of different wavelengths in association with the plural types of the optical discs with different layered structures, an objective lens for converging the laser light beam radiated from the light source on the signal recording layer of the optical disc, an objective lens switching mechanism for switching and moving the objective lens to the recording/reproducing position, light splitting means for splitting the incident laser light beam from the light source from the reflected laser light beam reflected from the optical disc, plural photodetectors for receiving the reflected laser light split by the light splitting means, and an optical system correction means for correcting the objective lens.

REFERENCES:
patent: 4908813 (1990-03-01), Ojima et al.
patent: 5097464 (1992-03-01), Nishiuchi et al.
patent: 5148421 (1992-09-01), Satoh et al.
patent: 5208801 (1993-05-01), Finegan
patent: 5235581 (1993-08-01), Miyagawa et al.
patent: 5295125 (1994-03-01), Oonishi et al.
patent: 5526338 (1996-06-01), Hasman et al.
patent: 5627814 (1997-05-01), Lee
patent: 5673247 (1997-09-01), Sekimoto et al..
patent: 5687154 (1997-11-01), Tsuchiya et al.
patent: 5696747 (1997-12-01), Bartrholomeusz
patent: 5696749 (1997-12-01), Brazas et al.
patent: 5703856 (1997-12-01), Hayashi et al.
patent: 5717674 (1998-02-01), Mori et al.
patent: 5729510 (1998-03-01), Kasahara et al.
patent: 5768221 (1998-06-01), Kasami et al.
patent: 5793734 (1998-08-01), Tsuchiya et al.
patent: 5875167 (1999-02-01), Katayama
Patent Abstracts of Japan, vol. 095, No. 003, JP 6-333255, Published Dec. 2, 1994 Matsushita Electric Inc. Co. LTD.
Patent Abstracts of Japan, vol. 017, No. 711, JP 5-242551, Published Sep. 9, 1993, Casio Computer Co. Ltd.
Patent Abstracts of Japan, vol. 017, No. 505, JP 5-128529, Published May 25, 1993, Hitachi Ltd.
Patent Abstracts of Japan, vol. 017, No. 366, JP 5-054406, Published Mar. 5, 1993, Matsushita Electric Inc. Co. Ltd.
Patent Abstracts of Japan, vol. 016, No. 155, JP 4-006628, Published Jan. 10, 1992, Nippon Steel Corp.
Patent Abstracts of Japan, vol. 012, No. 276, JP 63-055737, Published Mar. 10, 1988, Canon Inc.

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