Title:
SOUNDWAVE FOCUSING TRANSDUCER
Document Type and Number:
WIPO Patent Application WO/2023/075441
Kind Code:
A1
Abstract:
The present invention relates to a soundwave focusing transducer. According to one embodiment, the soundwave transducer that focuses soundwaves incident from a soundwave exciter and emits the soundwaves to the outside comprises: a piezoelectric element unit including a circular piezoelectric element and a plurality of annular piezoelectric elements concentrically arranged around a center point of the circular piezoelectric element to be spaced apart from each other; a power application unit for applying power to the piezoelectric element unit; and an electrode unit electrically connected to the piezoelectric element unit and applying a voltage to the piezoelectric element unit from the power application unit. The electrode unit alternately applies voltages of different polarities from the circular piezoelectric element toward the outer periphery, and the piezoelectric element unit alternately generates soundwaves of different phases from the circular piezoelectric element toward the outer periphery.
Inventors:
PARK NAM KYOO (KR)
JUNG YOUNG JIN (KR)
JUNG YOUNG JIN (KR)
Application Number:
PCT/KR2022/016550
Publication Date:
May 04, 2023
Filing Date:
October 27, 2022
Export Citation:
Assignee:
SEOUL NAT UNIV R&DB FOUNDATION (KR)
ULSAN COLLEGE IND ACADEMY COOPERATION FOUNDATION (KR)
CT ADVANCED META MAT (KR)
ULSAN COLLEGE IND ACADEMY COOPERATION FOUNDATION (KR)
CT ADVANCED META MAT (KR)
International Classes:
H04R17/00; B06B1/06
Domestic Patent References:
| WO2012011238A1 | 2012-01-26 |
Foreign References:
| JP2005229227A | 2005-08-25 | |||
| KR20170122894A | 2017-11-07 | |||
| KR20200065199A | 2020-06-09 | |||
| JPH02234600A | 1990-09-17 |
Attorney, Agent or Firm:
AJU INTERNATIONAL LAW & PATENT GROUP (KR)
Download PDF:
Previous Patent: METHOD AND DEVICE FOR UWB COMMUNICATION
Next Patent: ANODE AND SECONDARY BATTERY COMPRISING SAME
Next Patent: ANODE AND SECONDARY BATTERY COMPRISING SAME