Title:
FOCUS-INVARIANT ACOUSTIC LENS ASSEMBLY
Document Type and Number:
WIPO Patent Application WO/2021/210767
Kind Code:
A1
Abstract:
The present invention relates to a focus-invariant acoustic lens assembly, and to a focus-invariant acoustic lens assembly that focuses sound waves and comprises: an acoustic lens having a refractive index distribution symmetric with respect to a first axis in order to focus the sound waves; and a focus-invariant structure that is spaced a predetermined distance apart from the input end or output end of the acoustic lens, and causes the location of a focal point onto which the sound waves are focused to be invariant in a certain frequency band of the sound waves.
Inventors:
CHO WAN-HO (KR)
HYUN JAEYUB (KR)
KIM MISO (KR)
HYUN JAEYUB (KR)
KIM MISO (KR)
Application Number:
PCT/KR2021/001387
Publication Date:
October 21, 2021
Filing Date:
February 03, 2021
Export Citation:
Assignee:
KOREA RES INST STANDARDS & SCI (KR)
International Classes:
G10K11/30; G10K11/35
Foreign References:
| KR20190129570A | 2019-11-20 | |||
| KR20160099745A | 2016-08-23 | |||
| CN108735197A | 2018-11-02 | |||
| US20150228269A1 | 2015-08-13 |
Other References:
HYUN, JAEYUB; PARK, CHOON-SU; KIM, MISO; CHOI, WONJAE: "Achromatic Gradient-Index (GRIN) Acoustic Lens with Optimized Coating Layers", PROCEEDINGS OF THE KOREAN SOCIETY FOR NOISE AND VIBRATION ENGINEERING CONFERENCE, 30 April 2018 (2018-04-30), Korea, pages 340, XP009531219
Attorney, Agent or Firm:
PCR INTELLECTUAL PROPERTY LAW FIRM (KR)
Download PDF:
Previous Patent: SECONDARY BATTERY ELECTRODE
Next Patent: MULTI-PHOTON MICROSCOPY, AND IMAGING METHOD USING TIME-GATED DETECTION THEREOF
Next Patent: MULTI-PHOTON MICROSCOPY, AND IMAGING METHOD USING TIME-GATED DETECTION THEREOF