Optical pickup and disk drive apparatus

Details Optical pickup and disk drive apparatus Optical pickup and disk drive apparatus

2011-03-01

2011-03-01

Psitos, Aristotelis (Department: 2627)

Dynamic optical information storage or retrieval

Dynamic mechanism optical subsystem

Transducer carriage or actuator

C720S687000, C369S044160

Reexamination Certificate

active

07900222

ABSTRACT:
An optical pickup has an objective lens drive device which includes a fixed block fixed to a movement base, a movable block having an objective lens and a lens holder that holds the objective lens, a plurality of support springs that couples the fixed block with the movable block, and a focusing magnetic coil that operates the movable block in a focusing direction. A distance between the fixed block and a recording surface of a disk recording medium is larger than a distance between the movable block and the recording surface. The support springs are inclined with respect to the recording surface. The support springs have a longitudinal direction orthogonal to a direction of a thrust generated at the focusing magnetic circuit to the movable block during a focusing operation.

REFERENCES:
patent: 6480460 (2002-11-01), Ohkuma et al.
patent: 2006/0077781 (2006-04-01), Yamada
patent: 2006-066016 (2006-03-01), None

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