公开(公告)号：US20220241818A1

公开(公告)日：2022-08-04

申请号：US17325669

申请日：2021-05-20

Applicant: KOREA RESEARCH INSTITUTE OF STANDARDS AND SCIENCE

Inventor： Yong Tae KIM ,  Kyung Min BAIK ,  Sung Mok KIM ,  Hyung Jin LEE ,  Il DOH

IPC: B06B1/06 ,  H01L41/29

Abstract: The present invention relates to a flat-plate focusing ultrasonic transducer and an acoustic lens composed of an annular array piezoelectric element and methods of manufacturing and designing thereof, more particularly to a flat-plate focusing ultrasonic transducer composed of an annular array piezoelectric element, wherein the annular array piezoelectric element has a plurality of concentric regions which is concentrically arranged in a concentric circle shape with respect to a center point, the concentric region has ring shaped sound insulation regions and piezoelectric regions which are alternatively formed in a direction from the center point to a radius direction, so as to focus a sound wave near a focal point, wherein the piezoelectric regions are composed of a piezoelectric ring that is composed of a piezoelectric material and thus excites a sound wave, the concentric region is in a shape of a flat-plate of which both sides are flat and which has a constant thickness, and each radius of the plurality of the sound insulation regions and the piezoelectric regions in the concentric region are calculated based on a set focal length of the ultrasonic transducer and a frequency of a set sound wave.

公开(公告)号：US20170333007A1

公开(公告)日：2017-11-23

申请号：US15243254

申请日：2016-08-22

Applicant: KOREA RESEARCH INSTITUTE OF STANDARDS AND SCIENCE

Inventor： Se Hwa Kim ,  Yong Tae KIM ,  Dong Hee MA

IPC: A61B8/00 ,  B29C39/00 ,  A61K49/22 ,  B29B7/08 ,  B29C39/02 ,  B29L31/00 ,  B29K105/00 ,  B29L31/40

CPC classification number: A61B8/587 ,  A61K49/22 ,  B29B7/08 ,  B29C39/003 ,  B29C39/02 ,  B29K2005/00 ,  B29K2105/0035 ,  B29K2105/0061 ,  B29K2105/0064 ,  B29K2995/0001 ,  B29L2031/40 ,  B29L2031/753

Abstract: The present disclosure relates to an ultrasound phantom for a focused ultrasound wave. More specifically, the present invention provides an ultrasound phantom which mimics a body so as to correspond to a speed of sound in the body, in which agarose, sucrose, polydiacetylene vesicle, and distilled water are mixed, and a specific part onto which an ultrasound wave is irradiated by a focused ultrasound transducer is gradually discolored in accordance with a temperature.