Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
July 3, 2007
Patent Application Number
10529469
Date Filed
September 16, 2003
Patent Citations Received
Patent Primary Examiner
Patent 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.
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