Movable lens control device

Details Movable lens control device Movable lens control device

2007-09-04

2007-09-04

Hasan, Mohammed (Department: 2873)

Optical: systems and elements

Lens

With variable magnification

C359S702000

Reexamination Certificate

active

11202088

ABSTRACT:
A movable lens control device for controlling movements of movable lens groups including a first movable lens group and a second movable lens group, the movable lens control device including a lens driving device for moving the first and second movable lens groups in the optical axis direction; a position detector for detecting a position of the second movable lens group and determining whether the second movable lens group is in a predetermined normal moving range thereof; and a controller which controls operations of the lens driving device to stop the first movable lens group and to move the second movable lens group to a position within the normal moving range upon the position detector determining that the second movable lens group is positioned outside of the normal moving range during a movement of the first movable lens group from a predetermined initial position thereof.

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U.S. Appl. No. 11/202,087 to Nomura, filed Aug. 12, 2005.
English language Abstract of JP 2002-286999.

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