Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Date of Patent
February 17, 2009
Patent Application Number
11779957
Date Filed
July 19, 2007
Patent Primary Examiner
Patent abstract
A lens system having at least one front movable lens group and a rear movable lens group which are movable in an optical axis direction. The lens system includes a position detector for determining whether the rear movable lens group is positioned in a predetermined normal moving range thereof; and a lens control device which stops the front movable lens group and moves the rear movable lens group rearward into the predetermined normal moving range if the rear movable lens group is in an abnormal moving range thereof in front of the normal moving range during a forward movement of the front movable lens group from a predetermined initial position thereof.
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