公开(公告)号：US20210366458A1

公开(公告)日：2021-11-25

申请号：US16977782

申请日：2018-05-30

申请人： Korea Research Institute of Standard and Science

发明人： Jae-yub Hyun ,  Yong-tae Kim ,  Il Doh ,  Bong-young Ahn ,  Kyung-min Baik ,  Se-hwa Kim

IPC分类号： G10K11/30

摘要： The present invention relates to an ultra-thin acoustic lens for subwavelength focusing in a megasonic range and a design method thereof. More particularly, the present invention relates to a super-oscillatory planar ultra-thin acoustic lens for subwavelength focusing in the 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 acoustic insulation region for insulating incident acoustic waves, and a plurality of transmission regions for transmitting acoustic waves, the acoustic insulation regions and the transmission regions being formed alternatively in a radial direction from the center point so as to focus incident acoustic 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 acoustic insulation regions and transmission regions in the concentric region, is determined by a topology optimization reverse design method.

公开(公告)号：US11437013B2

公开(公告)日：2022-09-06

申请号：US16977782

申请日：2018-05-30

申请人： Korea Research Institute of Standard and Science

发明人： Jae-yub Hyun ,  Yong-tae Kim ,  Il Doh ,  Bong-young Ahn ,  Kyung-min Baik ,  Se-hwa Kim

IPC分类号： G10K11/30 ,  A61B8/00 ,  A61N7/00

摘要： The present invention relates to an ultra-thin acoustic lens for subwavelength focusing in a megasonic range and a design method thereof. More particularly, the present invention relates to a super-oscillatory planar ultra-thin acoustic lens for subwavelength focusing in the 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 acoustic insulation region for insulating incident acoustic waves, and a plurality of transmission regions for transmitting acoustic waves, the acoustic insulation regions and the transmission regions being formed alternatively in a radial direction from the center point so as to focus incident acoustic 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 acoustic insulation regions and transmission regions in the concentric region, is determined by a topology optimization reverse design method.