Optical actuator, camera module, and camera-mounted device
AssigneeMitsumi Electric Co., Ltd.
InventorsTomohiko OSAKA, Yohei ENTA
Life of this patent
Estimating the term…
Abstract
An optical actuator that comprises an inside holder that can hold an optical path bending member, an outside holder supporting the inside holder such that the inside holder can pivot around a first axis, and a drive unit making the inside holder pivot. Either end part of the inside holder is rotatably supported on the outside holder. The drive unit has: an ultrasonic motor supported on the outside holder, and an intermediate part supported on the inside holder. The ultrasonic motor has an oscillator that resonates, and the intermediate part has a fan-shaped contact part that contacts the oscillator.
Claims7
An optical actuator, comprising:
- an inner holder capable of holding an optical path bending member;
- an outer holder configured to support the inner holder in a swayable manner about a first axis;
- and
- a drive unit configured to sway the inner holder, wherein
- the inner holder is rotatably supported through a bearing part with respect to the outer holder at both end portions of the inner holder in a direction parallel to the first axis,
- the drive unit includes an ultrasonic motor and an interposition part, the ultrasonic motor being supported by the outer holder, the interposition part being supported by the inner holder,
- the ultrasonic motor includes a transducer configured to resonate, and
- the interposition part includes a contact part configured to come into contact with the transducer, the contact part having a fan shape.
Dependencies are inferred from the claim text.