SMA actuator driving device, and image pickup device...

Details SMA actuator driving device, and image pickup device... SMA actuator driving device, and image pickup device...

2008-07-02

2011-11-29

Chan, Jason (Department: 2622)

Television

Camera, system and detail

Optics

C396S133000

Reexamination Certificate

active

08068167

ABSTRACT:
In a shape memory alloy actuator driving device, a predetermined constant current is applied to a shape memory alloy member as a retrieval signal to detect a terminal voltage of the shape memory alloy member, and a detection result of the terminal voltage is compared with a target voltage value to be calculated based on a target resistance value of the shape memory alloy member and a value of the constant current to cause a driving circuit to output, to the shape memory alloy member, a drive current that makes the detection result substantially equal to the target voltage value.

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Japanese “Notice of Reasons for Rejection” dated Jun. 28, 2011, for Japanese Application No. 2007-177325, together with an English-language translation thereof.

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