JPWO2021172287A1 - - Google Patents

Info

Publication number
JPWO2021172287A1
JPWO2021172287A1 JP2022503615A JP2022503615A JPWO2021172287A1 JP WO2021172287 A1 JPWO2021172287 A1 JP WO2021172287A1 JP 2022503615 A JP2022503615 A JP 2022503615A JP 2022503615 A JP2022503615 A JP 2022503615A JP WO2021172287 A1 JPWO2021172287 A1 JP WO2021172287A1
Authority
JP
Japan
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2022503615A
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Publication of JPWO2021172287A1 publication Critical patent/JPWO2021172287A1/ja
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/29—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the position or the direction of light beams, i.e. deflection
    • G02F1/31—Digital deflection, i.e. optical switching
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F2/00—Demodulating light; Transferring the modulation of modulated light; Frequency-changing of light
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
    • H04R1/40—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers
    • H04R1/406—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers microphones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R23/00—Transducers other than those covered by groups H04R9/00 - H04R21/00
    • H04R23/008—Transducers other than those covered by groups H04R9/00 - H04R21/00 using optical signals for detecting or generating sound
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers, loudspeakers or microphones
    • H04R3/005—Circuits for transducers, loudspeakers or microphones for combining the signals of two or more microphones
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/10—Beam splitting or combining systems
    • G02B27/106—Beam splitting or combining systems for splitting or combining a plurality of identical beams or images, e.g. image replication
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/30—Collimators

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Nonlinear Science (AREA)
  • General Health & Medical Sciences (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
JP2022503615A 2020-02-25 2021-02-22 Pending JPWO2021172287A1 (ja)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US202062981210P 2020-02-25 2020-02-25
JP2021007464 2021-01-20
PCT/JP2021/006663 WO2021172287A1 (ja) 2020-02-25 2021-02-22 光マイクロフォン

Publications (1)

Publication Number Publication Date
JPWO2021172287A1 true JPWO2021172287A1 (ja) 2021-09-02

Family

ID=77490427

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2022503615A Pending JPWO2021172287A1 (ja) 2020-02-25 2021-02-22

Country Status (4)

Country Link
US (1) US12028680B2 (ja)
JP (1) JPWO2021172287A1 (ja)
CN (1) CN114868404A (ja)
WO (1) WO2021172287A1 (ja)

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59174100A (ja) 1983-03-23 1984-10-02 Mochida Pharmaceut Co Ltd レ−ザ−マイクロフオン装置
JPS6018100A (ja) * 1983-07-11 1985-01-30 Yasushi Miki マイクロホン
US6301034B1 (en) * 1997-10-22 2001-10-09 John R. Speciale Pulsed laser microphone
JP2000078695A (ja) 1998-09-01 2000-03-14 Fujitsu Ltd 指向性光マイクロフォン
JP4071730B2 (ja) * 2004-03-26 2008-04-02 株式会社東芝 振動解析装置及び振動解析方法
US7134343B2 (en) 2003-07-25 2006-11-14 Kabushiki Kaisha Toshiba Opto-acoustoelectric device and methods for analyzing mechanical vibration and sound
JP4806739B2 (ja) * 2006-04-21 2011-11-02 学校法人東海大学 相関演算方式光マイクロホン
EP2338287B1 (en) * 2008-09-12 2013-07-03 Knowles Electronics Asia PTE. Ltd. Transducer system
EP2525194A1 (en) * 2011-05-16 2012-11-21 Knowles Electronics Asia PTE. Ltd. Optical sensor
US9344811B2 (en) * 2012-10-31 2016-05-17 Vocalzoom Systems Ltd. System and method for detection of speech related acoustic signals by using a laser microphone
US9510110B2 (en) * 2014-07-07 2016-11-29 Apple Inc. Open top back plate optical microphone
US20180027339A1 (en) * 2016-01-17 2018-01-25 Vocalzoom Systems Ltd. Laser-Based Devices Utilizing Multiple Laser Beams

Also Published As

Publication number Publication date
US20220322014A1 (en) 2022-10-06
US12028680B2 (en) 2024-07-02
CN114868404A (zh) 2022-08-05
WO2021172287A1 (ja) 2021-09-02

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Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20231130