JPH0139280B2 - - Google Patents

Info

Publication number
JPH0139280B2
JPH0139280B2 JP15687281A JP15687281A JPH0139280B2 JP H0139280 B2 JPH0139280 B2 JP H0139280B2 JP 15687281 A JP15687281 A JP 15687281A JP 15687281 A JP15687281 A JP 15687281A JP H0139280 B2 JPH0139280 B2 JP H0139280B2
Authority
JP
Japan
Prior art keywords
light
light guide
diaphragm
guide path
circular film
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.)
Expired
Application number
JP15687281A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5857898A (ja
Inventor
Kuninori Okamoto
Yoshiaki Kanbe
Yasushi Mori
Koji Yamashita
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 JPS5857898A (ja) 1983-04-06
JPH0139280B2 true 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)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IL135282A0 (en) * 2000-03-27 2001-05-20 Phone Or Ltd Thin optical microphone/sensor
JP3951613B2 (ja) 2001-02-09 2007-08-01 株式会社ケンウッド マイクロホン
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
JPS5857898A (ja) 1983-04-06

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