Back to results
US 12,601,955 B2Granted
Driving device, optical element driving device, camera module, and camera-equipped device
AssigneeMitsumi Electric Co., Ltd.
InventorsYoichi Itagaki, Hiroyuki Ujiie, Shun Tsuchiya, Fumiko Wako
Life of this patent
Estimating the term…
Abstract
A driving device includes a resonance unit that has a pair of arm portions and resonates with vibration of a piezoelectric element, and a moving portion that abuts the pair of arm portions and is moved relative to the resonance unit due to vibration of the resonance unit, wherein a portion of the resonance unit and a portion of the moving portion that abut each other are each made of ceramic, and each of the pair of arm portions has, as a portion that abuts the moving portion, a sphere made of ceramic.
Claims7
A driving device comprising:
- a resonance unit that has a pair of arm portions and resonates with vibration of a piezoelectric element;
- and
- a moving portion that abuts the pair of arm portions and is moved relative to the resonance unit due to vibration of the resonance unit, wherein
- a portion of the resonance unit and a portion of the moving portion that abut each other are each made of ceramic, and
- each of the pair of arm portions has, as a portion that abuts the moving portion, a sphere made of ceramic.
2 more elements
Dependencies are inferred from the claim text.