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Patent Agency Ranking
公开(公告)号：US20230257992A1
公开(公告)日：2023-08-17
申请号：US18014373
申请日：2021-09-17
Inventor： Wonju JEON , Hyeonbin RYOO
IPC: E04B1/86 , G10K11/172
CPC classification number: E04B1/86 , G10K11/172 , G10K2210/3214
Abstract: A sound absorbing device according to an exemplary embodiment of the present invention comprises a plurality of sound absorbing cells arranged adjacent to each other on a plane, and each of the plurality of sound absorbing cells includes: a chamber having a volume therein, and in which a plurality of micro holes is perforated on a front surface in which a sound wave is incident; and a neck part introduced and extended to a rear of the front surface and penetrated by a through hole for communicating the outside and the chamber.
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公开(公告)号：US20250157448A1
公开(公告)日：2025-05-15
申请号：US18725583
申请日：2022-11-30
Inventor： Wonju JEON , Hyeonbin RYOO , Jiwan KIM
IPC: G10K11/172
Abstract: The present invention relates to a broadband sound absorption device using area division, the device comprising: Helmholtz resonators including a neck portion and a cavity portion connected to the neck portion and having a predetermined area and thickness; and a unit sound absorber including at least one pair of the Helmholtz resonators, wherein a plurality of unit absorbers are arranged on a plane or curved surface, and the plurality of sound unit absorbers are formed to have cavity portions with different areas to minimize the thickness while enabling sound absorption for a wider band.
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公开(公告)号：US20200333643A1
公开(公告)日：2020-10-22
申请号：US16850235
申请日：2020-04-16
Inventor： Wonju JEON , Junyong AN , Hyeonbin RYOO
Abstract: An acousto-optic structure according to an exemplary embodiment of the present invention is a stacked structure for inducing an interaction between incident acoustic wave and incident optical wave, and it includes: a pair of multi-layered structures including a structure in which two layers with different acoustic impedance and optical impedance are alternately arranged in a direction in which the acoustic wave and the optical wave propagate; and a cavity layer disposed between the pair of multi-layered structures in the direction in which the acoustic wave and the optical wave propagate, and made of a medium having acoustic impedance and optical impedance that are different from those of interfacing layers at both sides, wherein the two layers are symmetrically arranged with respect to the cavity layer so that the acoustic wave and the optical wave may be confined in the cavity layer.
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公开(公告)号：US20250150752A1
公开(公告)日：2025-05-08
申请号：US18806843
申请日：2024-08-16
Inventor： Wonju JEON , Seongmin Park , Taehwan Son
Abstract: Provided is an ultrasonic wave amplifier including a cavity structure for amplifying and outputting sound waves. The cavity structure may include an input opening through which the sound waves generated by the transducer are input, an inner wall forming a cavity in which the sound waves input through the input opening resonate, and an output opening through which the amplified sound waves are output, and when a first axis is defined as a line connecting a center of the input opening and a center of the output opening, the shape of the inner wall may be formed such that an area of the cavity in a cross section perpendicular to the first axis varies depending on a position on the first axis. Ultrasonic wave amplifier may further comprise an insertion structure disposed inside the cavity.
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公开(公告)号：US20180187734A1
公开(公告)日：2018-07-05
申请号：US15638177
申请日：2017-06-29
Inventor： Wonju JEON
Abstract: A vibration damping apparatus according to an exemplary embodiment of the present invention includes a main body extended from one side of a vibrating structure with a predetermined length from one end that contacts the structure to the other end, wherein at least a part of the main body is bent with a gradually decreasing thickness.
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