Optical element driving device
AssigneeMitsumi Electric Co., Ltd.
InventorsShun Suzuki, Tomohiko Osaka
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Abstract
This optical element driving device is provided with: a movable part capable of holding an optical element; a housing housed the movable part; a driving part that includes an ultrasonic motor and drives the movable part; a boosting part having an inductor that boosts input voltage inputted to the driving part and supplies the boosted input voltage to the ultrasonic motor; and a board part on which the inductor is disposed. The ultrasonic motor includes piezoelectric elements generating vibration by the input voltage and a resonant portion resonating with the vibration of the piezoelectric elements, the inductor is covered by a cover portion, and the housing is cut out at a location corresponding to the inductor.
Claims5
An optical-element driving device configured to be built in a camera-mounted device, the optical-element driving device comprising:
- a movable part configured to hold an optical element;
- a housing housing the movable part;
- a driving part including an ultrasonic motor and configured to drive the movable part with respect to the housing;
- a boosting part including an inductor that boosts an input voltage to be inputted to the driving part and supplies the input voltage to the ultrasonic motor;
- and
- a board part fixed to the housing and on which the inductor is disposed, wherein
- the ultrasonic motor includes piezoelectric elements generating vibration by the input voltage and a resonant portion resonating with the vibration of the piezoelectric elements,
- the inductor is covered by a cover portion, and
- the housing is cut out at a location corresponding to the inductor.
Dependencies are inferred from the claim text.