Optical pickup actuator

Details Optical pickup actuator Optical pickup actuator

2006-05-02

2006-05-02

Dinh, Tan (Department: 2653)

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

C369S044150, C369S044220, C359S812000, C359S814000, C359S824000, C359S719000

Reexamination Certificate

active

07038977

ABSTRACT:
An optical pickup actuator includes a base having a holder installed at one side thereof, a moving portion in which an objective lens is installed at the periphery thereof and a guide hole is formed, a bobbin coupled to the guide hole, a magnetic driving portion provided at the base and symmetrically arranged to make the moving portion perform focusing and tracking, and suspensions having one end supported at the holder and the other end fixed to the moving portion to be connected to the bobbin. Thus, since the magnetic driving portion is symmetrically arranged, a pitching mode and a rolling mode generated due to an asymmetrical structure are prevented. Also, the AC sensitivity and DC sensitivity can be improved.

REFERENCES:
patent: 5446721 (1995-08-01), Sekimoto et al.
patent: 5581533 (1996-12-01), Fujisawa
patent: 5684645 (1997-11-01), Tomiyama et al.
patent: 6285644 (2001-09-01), Kano
patent: 6317277 (2001-11-01), Izumino et al.
patent: 11-25483 (1999-01-01), None
patent: 2001-14698 (2000-01-01), None

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