Zoom lens unit and method of driving the same

Details Zoom lens unit and method of driving the same Zoom lens unit and method of driving the same

2005-08-02

2005-08-02

Ben, Loha (Department: 2873)

Optical: systems and elements

Lens

With variable magnification

C359S696000, C359S823000, C396S087000, C396S133000, C310S012060, C310S309000, C348S335000, C348S374000, C257S232000

Reexamination Certificate

active

06924940

ABSTRACT:
A drive control circuit executes a cycle at least once while a first movable part moves one pitch of an electrode of a plurality of groups of electrodes, the cycle including a first operation for attracting the first movable part to a driving electrode substrate, a second operation for attracting the first movable part and a second movable part to stripe electrodes, a third operation for attracting the second movable part to the driving electrode substrate, and a fourth operation for attracting the first and second movable parts to the stripe electrodes.

REFERENCES:
patent: 5323199 (1994-06-01), Yoshida
patent: 6265736 (2001-07-01), Dillen et al.
patent: 6531804 (2003-03-01), Kasahara
patent: 6611079 (2003-08-01), Koga et al.
patent: 6670738 (2003-12-01), Kasahara et al.
patent: 6680558 (2004-01-01), Akiba et al.
patent: 6750591 (2004-06-01), Akiba et al.
patent: 6781281 (2004-08-01), Koga et al.
patent: 6784594 (2004-08-01), Kasahara et al.
patent: 6806618 (2004-10-01), Koga et al.
A. Koga, et al., Journal of Lightwave Technology, vol. 17, No. 1, pp. 43-47, “Electrostatic Linear Microactuator Mechanism for Focusing a CCD Camera”, Jan. 1999.

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