JPS5857898A - マイクロホン - Google Patents

マイクロホン

Info

Publication number
JPS5857898A
JPS5857898A JP15687281A JP15687281A JPS5857898A JP S5857898 A JPS5857898 A JP S5857898A JP 15687281 A JP15687281 A JP 15687281A JP 15687281 A JP15687281 A JP 15687281A JP S5857898 A JPS5857898 A JP S5857898A
Authority
JP
Japan
Prior art keywords
light
diaphragm
light guide
refractive index
circular
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.)
Granted
Application number
JP15687281A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0139280B2 (enrdf_load_stackoverflow
Inventor
Kuninori Okamoto
岡本　晋典
Yoshiaki Kanbe
祥明 神戸
Yasushi Mori
森　康至
Koji Yamashita
耕司 山下
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 Electric Works Co Ltd
Original Assignee
Matsushita Electric Works 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 Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to JP15687281A priority Critical patent/JPS5857898A/ja
Publication of JPS5857898A publication Critical patent/JPS5857898A/ja
Publication of JPH0139280B2 publication Critical patent/JPH0139280B2/ja
Granted 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)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
JP15687281A 1981-09-30 1981-09-30 マイクロホン Granted JPS5857898A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15687281A JPS5857898A (ja) 1981-09-30 1981-09-30 マイクロホン

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15687281A JPS5857898A (ja) 1981-09-30 1981-09-30 マイクロホン

Publications (2)

Publication Number Publication Date
JPS5857898A true JPS5857898A (ja) 1983-04-06
JPH0139280B2 JPH0139280B2 (enrdf_load_stackoverflow) 1989-08-18

Family

ID=15637229

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15687281A Granted JPS5857898A (ja) 1981-09-30 1981-09-30 マイクロホン

Country Status (1)

Country Link
JP (1) JPS5857898A (enrdf_load_stackoverflow)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1139071A1 (en) * 2000-03-27 2001-10-04 Phone-Or Ltd Thin optical microphone sensor with reflecting wedges
WO2002089523A1 (en) * 2001-04-26 2002-11-07 Koninklijke Philips Electronics N.V. Device for detecting pressure fluctuations, display device, recording device and sound reproduction system
EP1367855A4 (en) * 2001-02-09 2005-11-16 Kenwood Corp VIBRATION DETECTOR

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1139071A1 (en) * 2000-03-27 2001-10-04 Phone-Or Ltd Thin optical microphone sensor with reflecting wedges
EP1367855A4 (en) * 2001-02-09 2005-11-16 Kenwood Corp VIBRATION DETECTOR
US7114395B2 (en) 2001-02-09 2006-10-03 Kabushiki Kaisha Kenwood Vibration detector
WO2002089523A1 (en) * 2001-04-26 2002-11-07 Koninklijke Philips Electronics N.V. Device for detecting pressure fluctuations, display device, recording device and sound reproduction system

Also Published As

Publication number Publication date
JPH0139280B2 (enrdf_load_stackoverflow) 1989-08-18

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