Title:
OPTICAL DEVICE AND IMAGING UNIT PROVIDED WITH OPTICAL DEVICE
Document Type and Number:
WIPO Patent Application WO/2024/084743
Kind Code:
A1
Abstract:
The present disclosure provides an optical device in which foreign substances adhering to the surface of a light-transmitting body can be sufficiently removed without complicating the configuration, and an imaging unit provided with the optical device. An optical device (10) is provided with an outermost layer lens (1) (light-transmitting body), a housing (2), a vibrating body (3), a piezoelectric element (5), and a drive circuit (6). The drive circuit (6) causes a voltage (Vp-p_1) of a drive signal that drives the piezoelectric element (5) in an atomization mode (first vibration mode) among a plurality of vibration modes that vibrate the outermost layer lens (1), and a voltage (Vp-p_(underbar)2) of a drive signal that drives the piezoelectric element (5) in a heating mode (second vibration mode), to be the same. The drive circuit (6) drives the piezoelectric element (5) such that an effective voltage (Veff_1) applied to the piezoelectric element (5) within a predetermined period of the atomization mode, and an effective voltage (Veff_2) applied to the piezoelectric element (5) within a predetermined period of the heating mode, are different.
Inventors:
KISHI NORITAKA (JP)
SAKAGUCHI HITOSHI (JP)
SAKAGUCHI HITOSHI (JP)
Application Number:
PCT/JP2023/023278
Publication Date:
April 25, 2024
Filing Date:
June 23, 2023
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
G03B17/02; B06B1/06; G02B7/02; G03B11/00; G03B17/55; G03B30/00; H04N23/52; H04N23/57
Domestic Patent References:
| WO2020217600A1 | 2020-10-29 | |||
| WO2013141377A1 | 2013-09-26 |
Foreign References:
| JP2022072661A | 2022-05-17 |
Attorney, Agent or Firm:
FUKAMI PATENT OFFICE, P.C. (JP)
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