Pickup device for optical disk drive

Details Pickup device for optical disk drive Pickup device for optical disk drive

2006-11-14

2006-11-14

Davis, David (Department: 2627)

Dynamic optical information storage or retrieval

Dynamic mechanism optical subsystem

Transducer carriage or actuator

Reexamination Certificate

active

07137133

ABSTRACT:
The pickup device is used in a drive device of an optical disc and is opposed to the optical disc to irradiate a light beam from a light source onto an information recording surface of the optical disc. The pickup device has the actuator including the objective lens for condensing a light beam on the information recording surface of the optical disc, and irradiation of a light beam on the optical disc is controlled by moving the objective lens. Further, the pickup device has the optical system for directing a light beam, which is emitted from the light source, to a position below the objective lens. The optical system is placed at the same height level as the actuator. Therefore, as compared with the case where the optical system is provided below the actuator, the whole pickup can be smaller in thickness, and it is possible to provide a pickup device suitable for a thin drive device.

REFERENCES:
patent: 5165088 (1992-11-01), Suzuki et al.
patent: 5566149 (1996-10-01), Song
patent: 5886978 (1999-03-01), Matsui
patent: 6018509 (2000-01-01), Itoh et al.
patent: 6343053 (2002-01-01), Akanuma et al.
patent: 2001/0026403 (2001-10-01), Suzuki
patent: 1 124 225 (2001-08-01), None
patent: 8-221776 (1996-08-01), None
patent: 2001-229557 (2001-08-01), None

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