Adjustable optical pickup actuator

Details Adjustable optical pickup actuator Adjustable optical pickup actuator

2006-01-23

2009-02-03

Hindi, Nabil Z (Department: 2627)

Dynamic information storage or retrieval

With servo positioning of transducer assembly over track...

Optical servo system

Reexamination Certificate

active

07486594

ABSTRACT:
An adjustable optical actuator with tilting function is provided, including two focusing coils, a tilting coil, and two tracking coils. A lens holder is hanged on a yoke base. The focusing coils are placed on the two sides of the lens holder, and the current in the focusing coils is perpendicular to the optical axis of the lens. The tilting coil is placed on the lens holder, and the current in the tilting coil is perpendicular to the optical axis of the lens. The tracking coils are placed on the lens holder, and the current in the tracking coils is parallel to the optical axis of the lens. Four magnets are placed on the yoke base so that the four magnets are placed at the four corners of the lens holder to generate a closed magnetic-flux. The lens holder, focusing coils, tilting coil, and tracking coils are within the scope of the magnetic-flux generated by the four magnets so that the actuator has the functions of focusing, tracking and tilting for adjustment.

REFERENCES:
patent: 5627687 (1997-05-01), Fujisawa
patent: 5986983 (1999-11-01), Simpson et al.
patent: M253044 (2004-12-01), None

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