Title:
OSCILLATION DEVICE AND DRIVING DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/225041
Kind Code:
A1
Abstract:
Provided is an oscillation device with which it is possible to reliably move water droplets. This oscillation device 1 comprises: an oscillating element 2 having a piezoelectric oscillator 5A (oscillator); and a driving device 12 which oscillates the oscillating element 2. The oscillating element 2 has a translucent body 4, and the piezoelectric oscillator 5A is electrically connected to the driving device 12. In order to render the oscillating element 2 in an oscillating state, the driving device 12 comprises: a first circuit which applies an electrical signal to the piezoelectric oscillator 5A; a second circuit which applies, to the piezoelectric oscillator 5A, an electrical signal according to a feedback signal output from the piezoelectric oscillator 5A; and a switch which switches, at constant timing, the connection between the first circuit and the piezoelectric oscillator 5A and the second circuit and the piezoelectric oscillator 5A.
Inventors:
FUJIMOTO KATSUMI (JP)
Application Number:
PCT/JP2018/046593
Publication Date:
November 28, 2019
Filing Date:
December 18, 2018
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
B06B1/02; H04N5/225; G02B7/02
Foreign References:
| JP2004032191A | 2004-01-29 | |||
| JP2008067447A | 2008-03-21 | |||
| JP2017077543A | 2017-04-27 | |||
| JP2017229008A | 2017-12-28 |
Other References:
See also references of EP 3731513A4
Attorney, Agent or Firm:
MIYAZAKI & METSUGI (JP)
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