Mobile lens unit with detection device
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United States of America Patent
Stats
-
Mar 16, 2010
Grant Date -
Dec 4, 2008
app pub date -
May 30, 2008
filing date -
Jun 1, 2007
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A lens unit includes a lens barrel for receiving at least one lens and a motor arranged to displace the lens barrel between various positions. Displacement of the lens barrel is proportional to an electrical signal applied to the motor. A first conductor is fixed to the lens barrel and is arranged to make electrical contact with a second conductor when the lens barrel is at an initial position. A processor is arranged to detect a change in the electrical contact, to determine an electrical signal at the time of the change and to generate an electrical signal corresponding to the desired displacement.
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Family
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