Actuator for pickup, pickup device, recording medium drive...

Details Actuator for pickup, pickup device, recording medium drive... Actuator for pickup, pickup device, recording medium drive...

2005-03-30

2009-08-11

Chen, Tianjie (Department: 2627)

Dynamic optical information storage or retrieval

Dynamic mechanism optical subsystem

Transducer carriage or actuator

Reexamination Certificate

active

07574717

ABSTRACT:
An actuator for a pickup has a suspension base (500), a lens holder movable in each of a focusing direction along the optical axis of the objective lens and a tracking direction, for holding an objective lens, and six suspensions (550A-550F) each connected at ends thereof to the suspension base (500) and the lens holder. The suspensions (550A-550F) on a side of the suspension base (500) are positioned on a first virtual circle (X), and connection portions on a side of the lens holder (600) are positioned on a second virtual circle (X). Even when the lens holder turns with respect to the suspension base (500), there is generated no relative displacement in an axial direction as a whole because displacements occurring in all the suspensions (550A-550F) are the same.

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