Objective lens drive device

Details Objective lens drive device Objective lens drive device

2007-07-03

2007-07-03

Sugarman, Scott J. (Department: 2873)

Optical: systems and elements

Lens

With support

C359S814000, C359S823000, C369S044150, C369S044160

Reexamination Certificate

active

10529469

ABSTRACT:
A lens holder is so supported that the lens holder is movable along a supporting shaft in parallel to an optical axis of the object lens, and rotatable about the supporting shaft. Magnets are mounted on the lens holder. Focusing coils and tracking coils having sides facing the magnets are mounted on a base on which the supporting shaft is planted. Yokes are so provided that the yokes and the magnets respectively sandwich the focusing coils and the tracking coils. The yokes have facing portions that face respective magnetic poles of the magnets and extending portions extending in the directions away from the magnets.

REFERENCES:
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patent: 5905255 (1999-05-01), Wakabayashi et al.
patent: 6331741 (2001-12-01), Suzuki
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patent: 8-7306 (1996-01-01), None
patent: 8-249689 (1996-09-01), None
patent: 2560379 (1996-09-01), None
patent: 2003-132565 (2003-05-01), None
patent: 2003-203372 (2003-07-01), None

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