Title:
ULTRA-THIN ACOUSTIC LENS FOR SUBWAVELENGTH FOCUSING IN MEGASONIC RANGE, AND DESIGN METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2019/231009
Kind Code:
A1
Abstract:
The present invention relates to an ultra-thin acoustic lens for subwavelength focusing in a megasonic range, and a design method therefor. More specifically, the present invention relates to a super-oscillatory planar ultra-thin acoustic lens for subwavelength focusing in a megasonic range, which includes a plurality of concentric regions arranged in a concentric shape with reference to the center point, wherein the concentric regions include a plurality of sound insulation regions for insulating incident sound waves, and a plurality of transmission regions for transmitting sound waves, the sound insulation regions and the transmission regions being formed alternately in a radial direction from the center point so as to focus incident sound wave energy onto a subwavelength region. The acoustic lens has flat surfaces on both sides thereof respectively and has a plate shape having a constant thickness, and a layout, which is a radius of each of the plurality of sound insulation regions and transmission regions in the concentric regions, is determined by a topology optimization reverse design method.
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Inventors:
HYUN JAE-YUB (KR)
KIM YONG-TAE (KR)
DOH IL (KR)
AHN BONG-YOUNG (KR)
BAIK KYUNG-MIN (KR)
KIM SE-HWA (KR)
KIM YONG-TAE (KR)
DOH IL (KR)
AHN BONG-YOUNG (KR)
BAIK KYUNG-MIN (KR)
KIM SE-HWA (KR)
Application Number:
PCT/KR2018/006128
Publication Date:
December 05, 2019
Filing Date:
May 30, 2018
Export Citation:
Assignee:
KOREA RES INST STANDARDS & SCI (KR)
International Classes:
G10K11/30; H04R1/34
Foreign References:
| KR20170122894A | 2017-11-07 | |||
| KR20180037349A | 2018-04-12 | |||
| KR101656185B1 | 2016-09-09 | |||
| JPS6097251A | 1985-05-31 | |||
| KR20030082303A | 2003-10-22 |
Attorney, Agent or Firm:
IPUS PATENT & LAW FIRM (KR)
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