Vibration device, method of driving the same, and camera
US10444495B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 14, 2018 |
| Grant date | Oct 15, 2019 |
| Priority date | — |
| Expiry date | Jun 14, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B2205/0061
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A vibration device includes a cylindrical vibration body portion including a cylindrical member and a piezoelectric vibrator fixed to the cylindrical member, and a light-transparent body portion that includes an outer peripheral portion connected to an end surface of the cylindrical member and a light-transparent portion positioned in front of a lens. The light-transparent body portion vibrates in a bending mode by vibration of the cylindrical vibration body portion. The bending mode includes a first bending mode in which a center-maximum-displacement portion of the light-transparent body portion and the outer peripheral portion of the light-transparent body portion connected to the end surface are displaced in the same direction and a second bending mode in which the center-maximum-displacement portion of the light-transparent body portion and the outer peripheral portion of the light-transparent body portion are displaced in opposite directions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.