JPS55162700A - Optical microphone - Google Patents

Optical microphone

Info

Publication number
JPS55162700A
JPS55162700A JP7101679A JP7101679A JPS55162700A JP S55162700 A JPS55162700 A JP S55162700A JP 7101679 A JP7101679 A JP 7101679A JP 7101679 A JP7101679 A JP 7101679A JP S55162700 A JPS55162700 A JP S55162700A
Authority
JP
Japan
Prior art keywords
sound pressure
vibration film
optical fiber
response
optical
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.)
Pending
Application number
JP7101679A
Other languages
Japanese (ja)
Inventor
Kiyoshi Kubo
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP7101679A priority Critical patent/JPS55162700A/en
Publication of JPS55162700A publication Critical patent/JPS55162700A/en
Pending legal-status Critical Current

Links

Classifications

    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)

Abstract

PURPOSE:To increase the sensitivity and response to sound pressure without being subject to external noise, by converting the change in the sound pressure to the strongness and weakness of optical signal directly and constituting the optical signal so that it can be transmitted through the optical fiber. CONSTITUTION:The diaphragm film 301 receiving the driving force proportional to sound pressure is placed in the enclosed case 302 which is not moved with sound pressure, and the tip of the optical fiber 303 as the microphone code 202 is fitted near the vibration film 301 to the part around the center of the vibration film 301. The part facing the tip of the optical fiber 303 of the vibration film 301 is constituted so that a part of light can be reflected, and the audio signal in response to the sound pressure reflected with the vibration film 301 is transmitted in the optical fiber 303. Since mechanical contact and not be needed to the vibration film, the sensitivity is excellent and the response to the sound pressure is excellent and the optical microphone excellent in the audio frequency characteristics can be obtained.
JP7101679A 1979-06-05 1979-06-05 Optical microphone Pending JPS55162700A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7101679A JPS55162700A (en) 1979-06-05 1979-06-05 Optical microphone

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7101679A JPS55162700A (en) 1979-06-05 1979-06-05 Optical microphone

Publications (1)

Publication Number Publication Date
JPS55162700A true JPS55162700A (en) 1980-12-18

Family

ID=13448286

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7101679A Pending JPS55162700A (en) 1979-06-05 1979-06-05 Optical microphone

Country Status (1)

Country Link
JP (1) JPS55162700A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59150488U (en) * 1983-03-29 1984-10-08 株式会社ニツコ− sound reproduction toys
JPS60501428A (en) * 1983-05-24 1985-08-29 インコム，インコ−ポレイテツド Filter for non-axial radiation
JPS6118300A (en) * 1984-07-04 1986-01-27 Matsushita Electric Ind Co Ltd Optical microphone
JPS61163499U (en) * 1985-03-29 1986-10-09
JPS62155600U (en) * 1986-03-22 1987-10-02
EP1189482A1 (en) * 2000-09-14 2002-03-20 Phone-Or Limited Membrane for optical microphone/sensor
US6483619B1 (en) * 1998-08-12 2002-11-19 Lucent Technologies Inc. Optical-interference microphone

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5019822U (en) * 1973-06-26 1975-03-06

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5019822U (en) * 1973-06-26 1975-03-06

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59150488U (en) * 1983-03-29 1984-10-08 株式会社ニツコ− sound reproduction toys
JPS60501428A (en) * 1983-05-24 1985-08-29 インコム，インコ−ポレイテツド Filter for non-axial radiation
JPH0476081B2 (en) * 1983-05-24 1992-12-02 Inkomu Inc
JPS6118300A (en) * 1984-07-04 1986-01-27 Matsushita Electric Ind Co Ltd Optical microphone
JPS61163499U (en) * 1985-03-29 1986-10-09
JPS62155600U (en) * 1986-03-22 1987-10-02
US6483619B1 (en) * 1998-08-12 2002-11-19 Lucent Technologies Inc. Optical-interference microphone
EP1189482A1 (en) * 2000-09-14 2002-03-20 Phone-Or Limited Membrane for optical microphone/sensor

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