Driving unit for optical pick-up including lens
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United States of America Patent
Stats
-
Jan 26, 2010
Grant Date -
May 29, 2008
app pub date -
Aug 22, 2007
filing date -
Aug 24, 2006
priority date (Note) -
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status (Latency Note)
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Abstract
A lens driving unit includes a housing, a lead screw extending in an optical axis direction to be rotated and driven by a driving source, a nut screwed with the lead screw, a lens frame holding a lens and supported movably in the optical axis direction, a contact portion provided at the lens frame to be brought into contact with the nut from one end side of the optical axis direction, and a spring urging so that the nut and the contact portion are brought into contact with each other. The nut is engaged with a guide slit unrotatably with respect to the housing, and the contact portion and the nut are formed so that they are brought into partial contact with each other in a projected plane of the nut in the optical axis direction.
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