Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Date of Patent
February 6, 2007
Patent Application Number
11292539
Date Filed
December 2, 2005
Patent Primary Examiner
Patent abstract
A zoom lens has first to fifth lens groups G1 to G5 having positive, negative, positive, positive, and negative refractive power, in order from an object side. The first lens groups G1 includes a prism L2 for bending a light path. Zooming is performed by adjusting a focal length by linear movement of the second lens group G2 and fourth lens group G4 and compensating an image surface position by nonlinear movement of the fifth lens group G5. Focusing is performed by moving the fifth lens group G5.
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