Nisshinbo Holdings Inc.;Ueda Japan Radio Co., Ltd.
发明人:
TOMITA, Hideshi,SUZUKI, Takashi,KOBAYASHI, Shigeo
申请号：
EP18884839
公开号：
EP3541096A4
申请日:
2018.12.11
申请国别(地区):
EP
年份:
2020
代理人:
摘要：
The present invention is aimed to provide, as an acoustic lens propagating a sonic wave having a wavelength λ of 100 µm or less, an acoustic lens capable of exhibiting excellent acoustic characteristics in response to the wavelength λ of the sonic wave to be propagated and a production method thereof. The acoustic lens is an acoustic lens 1 to be used for propagating a sonic wave having a wavelength λ of 100 µm or less, wherein the acoustic lens contains a silicone resin and silica particles, an average primary particle diameter of the silica particles is 15 nm or more, and a particle diameter (D90) of 90% of a cumulative percentage in cumulative particle size distribution of the silica particles is less than 1/8 of the wavelength λ of the sonic wave to be propagated.
