JPS5541055A - Optical non-inductive microphone element - Google Patents

Optical non-inductive microphone element

Info

Publication number
JPS5541055A
JPS5541055A JP11477178A JP11477178A JPS5541055A JP S5541055 A JPS5541055 A JP S5541055A JP 11477178 A JP11477178 A JP 11477178A JP 11477178 A JP11477178 A JP 11477178A JP S5541055 A JPS5541055 A JP S5541055A
Authority
JP
Japan
Prior art keywords
light
amount
vibration
painted
focus
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
JP11477178A
Other languages
Japanese (ja)
Inventor
Takeshi Nishida
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP11477178A priority Critical patent/JPS5541055A/en
Publication of JPS5541055A publication Critical patent/JPS5541055A/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)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)

Abstract

PURPOSE:To form optical non-inductive microphone element less in noise and distortion, by projecting a given amount of light of beam shape from the lens and converting this light into light amount change depending on the audio vibration. CONSTITUTION:The vibration plate 1 uses very thin duralmin (i,e., unnecessary for field as conventionally), it is painted in black to collect light, and the mirror surface 2 is painted substance having greater reflection coefficient such as silver powder on a triangular graph so that the amount of light can be changed with vibration. Next, the projection lesn 3 is matched for the focus so that a given amount of light reaches the mirror surface 2 in beam shape from the light source optical fiber calbe 4, and focus is mathced for the photo reception lens 6 so that the reflection light can be incident with good efficiency to the photo reception optical fiber cable 7. Thus, the light in which the audio vibration is converted into the change in light amount, passes through the light connectors 9 and 10 and converted 11 and amplified 12, and outputted as greater sound from the speaker 14.
JP11477178A 1978-09-18 1978-09-18 Optical non-inductive microphone element Pending JPS5541055A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11477178A JPS5541055A (en) 1978-09-18 1978-09-18 Optical non-inductive microphone element

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11477178A JPS5541055A (en) 1978-09-18 1978-09-18 Optical non-inductive microphone element

Publications (1)

Publication Number Publication Date
JPS5541055A true JPS5541055A (en) 1980-03-22

Family

ID=14646270

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11477178A Pending JPS5541055A (en) 1978-09-18 1978-09-18 Optical non-inductive microphone element

Country Status (1)

Country Link
JP (1) JPS5541055A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58163147A (en) * 1982-03-19 1983-09-27 Hitachi Maxell Ltd Button-shaped alkaline cell
US5262884A (en) * 1991-10-09 1993-11-16 Micro-Optics Technologies, Inc. Optical microphone with vibrating optical element
GB2400263A (en) * 2003-03-31 2004-10-06 Sennheiser Electronic Optical sensor or microphone

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58163147A (en) * 1982-03-19 1983-09-27 Hitachi Maxell Ltd Button-shaped alkaline cell
US5262884A (en) * 1991-10-09 1993-11-16 Micro-Optics Technologies, Inc. Optical microphone with vibrating optical element
GB2400263A (en) * 2003-03-31 2004-10-06 Sennheiser Electronic Optical sensor or microphone
GB2400263B (en) * 2003-03-31 2006-11-15 Sennheiser Electronic A sensor or a microphone having such a sensor

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