Title:
OPTICAL ELEMENT DRIVING DEVICE, CAMERA MODULE, AND CAMERA-EQUIPPED DEVICE
Document Type and Number:
WIPO Patent Application WO/2024/048012
Kind Code:
A1
Abstract:
The present invention provides a reliable optical element driving device, camera module, and camera-equipped device that are capable of stabilizing movement of a movable part. The optical element driving device comprises a fixed part, a movable part including an optical element and movable relative to the fixed part via a rolling body, an ultrasonic motor-type driving part positioned on an active-side member, which is either one of the fixed part and the movable part, to move the movable part relative to the fixed part, and a power transmission part for connecting the driving part to a passive-side member, which is the other one of the fixed part and the movable part, to transmit power of the driving part to the passive-side member. The driving part has a resonant part with a pair of vibrating arms, and the power transmission part has a guiding part for guiding the rolling body and is sandwiched in a state of being urged by the pair of arms.
Inventors:
MURAKAMI TOMOYUKI
Application Number:
PCT/JP2023/022285
Publication Date:
March 07, 2024
Filing Date:
June 15, 2023
Export Citation:
Assignee:
MITSUMI ELECTRIC CO LTD (JP)
MURAKAMI TOMOYUKI
MURAKAMI TOMOYUKI
International Classes:
G03B5/00; G02B7/04; G02B7/08; G03B30/00; H04N23/50; H04N23/57
Domestic Patent References:
| WO2021200980A1 | 2021-10-07 |
Foreign References:
| JP7075030B1 | 2022-05-25 | |||
| EP1944639A1 | 2008-07-16 | |||
| US20110122517A1 | 2011-05-26 |
Attorney, Agent or Firm:
WASHIDA & ASSOCIATES (JP)
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