EP1152638A1 - Element de microphone optique et microphone optique - Google Patents

Element de microphone optique et microphone optique Download PDF

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Publication number
EP1152638A1
EP1152638A1 EP00966509A EP00966509A EP1152638A1 EP 1152638 A1 EP1152638 A1 EP 1152638A1 EP 00966509 A EP00966509 A EP 00966509A EP 00966509 A EP00966509 A EP 00966509A EP 1152638 A1 EP1152638 A1 EP 1152638A1
Authority
EP
European Patent Office
Prior art keywords
diaphragm
optical microphone
opening
sound wave
sound
Prior art date
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.)
Withdrawn
Application number
EP00966509A
Other languages
German (de)
English (en)
Inventor
Alexander c/o Phone-Or Ltd KOTS
Kazuo c/o Kenwood Engineering Corp TAKAHASHI
Okihiro c/o Kenwood Corporation KOBAYASHI
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Phone Or Ltd
Original Assignee
PARITSKY ALEXANDER BR PHONE OR
Paritsky Alexander Phone-Or Ltd
Phone Or Ltd
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 by PARITSKY ALEXANDER BR PHONE OR, Paritsky Alexander Phone-Or Ltd, Phone Or Ltd filed Critical PARITSKY ALEXANDER BR PHONE OR
Publication of EP1152638A1 publication Critical patent/EP1152638A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R25/00—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
    • H04R25/40—Arrangements for obtaining a desired directivity characteristic
    • H04R25/402—Arrangements for obtaining a desired directivity characteristic using contructional means
    • 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

Definitions

  • Figure 4 shows the directivity response pattern of the sensitivity of the optical microphone shown in figure 1.
  • the optical microphone shown in Figure 1 has almost "8" shaped symmetrical directivity comprising a pattern in the front face direction to go to the 1st opening 38 and a pattern in the back-plane direction to go to the 2nd opening 39.
  • noise such as surroundings noise is imputed as sound from the far range field as shown in figure 5.
  • a diaphragm 31 is never oscillated.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Neurosurgery (AREA)
  • Otolaryngology (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
EP00966509A 1999-10-15 2000-10-16 Element de microphone optique et microphone optique Withdrawn EP1152638A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP29422199 1999-10-15
JP29422199A JP2001119796A (ja) 1999-10-15 1999-10-15 光マイクロフォン素子および光マイクロフォン装置
PCT/JP2000/007162 WO2001028286A1 (fr) 1999-10-15 2000-10-16 Élément de microphone optique et microphone optique

Publications (1)

Publication Number Publication Date
EP1152638A1 true EP1152638A1 (fr) 2001-11-07

Family

ID=17804913

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00966509A Withdrawn EP1152638A1 (fr) 1999-10-15 2000-10-16 Element de microphone optique et microphone optique

Country Status (3)

Country Link
EP (1) EP1152638A1 (fr)
JP (1) JP2001119796A (fr)
WO (1) WO2001028286A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112932455A (zh) * 2021-01-28 2021-06-11 上海联影医疗科技股份有限公司 磁共振成像设备及磁共振扫描方法

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3522212B2 (ja) * 2000-11-10 2004-04-26 株式会社ケンウッド 音響等による微小変位検出装置
IL142689A0 (en) * 2001-04-19 2002-03-10 Phone Or Ltd Optical microphone construction
JP2002354593A (ja) * 2001-05-25 2002-12-06 Olympus Optical Co Ltd マイクロホン装置
JP3953752B2 (ja) 2001-06-19 2007-08-08 株式会社ケンウッド 光音響変換装置の振動板構造
KR101418750B1 (ko) * 2012-12-27 2014-07-11 전자부품연구원 광 마이크로폰 및 제작 방법
GB2558963A (en) * 2017-01-18 2018-07-25 Cirrus Logic Int Semiconductor Ltd Flexible membrane

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6031409B2 (ja) * 1980-07-17 1985-07-22 富士通株式会社 レ−ザ・マイクロフォン
JPS61100715A (ja) * 1984-10-24 1986-05-19 Nec Corp 光マイクロフオン
JPS63260400A (ja) * 1987-04-17 1988-10-27 Matsushita Electric Ind Co Ltd マイクロホン

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0128286A1 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112932455A (zh) * 2021-01-28 2021-06-11 上海联影医疗科技股份有限公司 磁共振成像设备及磁共振扫描方法

Also Published As

Publication number Publication date
WO2001028286A1 (fr) 2001-04-19
JP2001119796A (ja) 2001-04-27

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Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20010713

AK Designated contracting states

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Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: PHONE-OR LTD

RIN1 Information on inventor provided before grant (corrected)

Inventor name: KOTS, ALEXANDER, C/O PHONE-OR LTD

Inventor name: PARITSKY, ALEXANDER

Inventor name: KOBAYASHI, OKIHIRO, C/O KENWOOD CORPORATION

Inventor name: TAKAHASHI, KAZUO, C/O KENWOOD ENGINEERING CORP

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Withdrawal date: 20020510