Title:
VIBRATION DEVICE AND VIBRATION METHOD
Document Type and Number:
WIPO Patent Application WO/2023/157366
Kind Code:
A1
Abstract:
This vibration device comprises a light transmissive body, a vibration body that vibrates the light transmissive body, a drive unit that drives the vibration body, and a control unit that controls the drive unit. The control unit determines a high-frequency-band resonance frequency of the vibration body on the basis of a state of the drive unit obtained by varying the drive frequency of the drive unit in a high-frequency band of 100 kHz or more, and estimates the temperature of the light transmissive body on the basis of the high-frequency-band resonance frequency that has been determined of the vibration body.
Inventors:
TANAKA YUKA (JP)
KISHI NORITAKA (JP)
NAKADOI TAKAHIDE (JP)
TABUCHI KATSUHIRO (JP)
KISHI NORITAKA (JP)
NAKADOI TAKAHIDE (JP)
TABUCHI KATSUHIRO (JP)
Application Number:
PCT/JP2022/035930
Publication Date:
August 24, 2023
Filing Date:
September 27, 2022
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
B60S1/62; H04N23/52; G01K11/26; G03B17/02; G03B17/55
Domestic Patent References:
| WO2020217600A1 | 2020-10-29 |
Foreign References:
| JPS5540966A | 1980-03-22 |
Attorney, Agent or Firm:
YAMAO, Norihito et al. (JP)
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