JPS5775041A - Optical transmission device for sound - Google Patents

Optical transmission device for sound

Info

Publication number
JPS5775041A
JPS5775041A JP55151558A JP15155880A JPS5775041A JP S5775041 A JPS5775041 A JP S5775041A JP 55151558 A JP55151558 A JP 55151558A JP 15155880 A JP15155880 A JP 15155880A JP S5775041 A JPS5775041 A JP S5775041A
Authority
JP
Japan
Prior art keywords
sound
optical fibers
diaphragm
output
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
JP55151558A
Other languages
Japanese (ja)
Inventor
Noboru Tsuneyo
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP55151558A priority Critical patent/JPS5775041A/en
Publication of JPS5775041A publication Critical patent/JPS5775041A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/25—Arrangements specific to fibre transmission

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Optical Communication System (AREA)

Abstract

PURPOSE:To simplify the device and make an optical transmission for sound, which is strong against the external noise and has a high fidelity, possible, by vibrating a diaphragm by a sound signal and by reflecting the output from a light source by the diaphragm and by causing this output to be incident to an optical fiber bundle as positional information and transmitting it. CONSTITUTION:When a diaphragm 1 is vibrated as shown in 2 and 3 by a sound signal, a light 41 condensed from a light source 4 by a lens 5 is reflected to different positions such as 7-9 and is incident to different optical fibers 10. These optical fibers 10 are gathered into an optical fiber bundle 11 and are expanded to optical fibers 10 again in the receiving side. Outputs from optical fibers are sent to corresponding photodetectors 15 and are converted to electric signals. These electric signals are inputted to an adder 16. The adder 16 consists of elements corresponding to respective photodetectors 15, and respective elements give different outputs, which are regulated for the input of a constant level or more, to an output terminal 17, thereby reproducing a sound 18.
JP55151558A 1980-10-29 1980-10-29 Optical transmission device for sound Pending JPS5775041A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55151558A JPS5775041A (en) 1980-10-29 1980-10-29 Optical transmission device for sound

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55151558A JPS5775041A (en) 1980-10-29 1980-10-29 Optical transmission device for sound

Publications (1)

Publication Number Publication Date
JPS5775041A true JPS5775041A (en) 1982-05-11

Family

ID=15521143

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55151558A Pending JPS5775041A (en) 1980-10-29 1980-10-29 Optical transmission device for sound

Country Status (1)

Country Link
JP (1) JPS5775041A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4882773A (en) * 1988-05-05 1989-11-21 Donald A. Streck Audio microphone system with digital output and volume control feedback input
WO1993007686A1 (en) * 1991-10-09 1993-04-15 Buchholz Jeffrey C Optical microphone with vibrating optical element

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4882773A (en) * 1988-05-05 1989-11-21 Donald A. Streck Audio microphone system with digital output and volume control feedback input
WO1993007686A1 (en) * 1991-10-09 1993-04-15 Buchholz Jeffrey C Optical microphone with vibrating optical element
US5262884A (en) * 1991-10-09 1993-11-16 Micro-Optics Technologies, Inc. Optical microphone with vibrating optical element

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