WO2002087278A3 - Optical microphone construction - Google Patents

Optical microphone construction Download PDF

Info

Publication number
WO2002087278A3
WO2002087278A3 PCT/IL2002/000241 IL0200241W WO02087278A3 WO 2002087278 A3 WO2002087278 A3 WO 2002087278A3 IL 0200241 W IL0200241 W IL 0200241W WO 02087278 A3 WO02087278 A3 WO 02087278A3
Authority
WO
WIPO (PCT)
Prior art keywords
optical microphone
microphone construction
lenses
top wall
construction
Prior art date
Application number
PCT/IL2002/000241
Other languages
French (fr)
Other versions
WO2002087278A2 (en
Inventor
Alexander Paritsky
Alexander Kots
Original Assignee
Phone Or Ltd
Alexander Paritsky
Alexander Kots
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 Phone Or Ltd, Alexander Paritsky, Alexander Kots filed Critical Phone Or Ltd
Priority to AU2002251443A priority Critical patent/AU2002251443A1/en
Publication of WO2002087278A2 publication Critical patent/WO2002087278A2/en
Publication of WO2002087278A3 publication Critical patent/WO2002087278A3/en

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

An optical microphone device which comprises an inverted, cup-shaped body including a top wall and at least one side wall and being at least partly made of transparent material; at least two lenses projecting from the lower surface of said top wall and extending respectively towards said light source and said photodetector, and a pyramid-shaped air gap having a ridge separating said lenses.
PCT/IL2002/000241 2001-04-19 2002-03-25 Optical microphone construction WO2002087278A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2002251443A AU2002251443A1 (en) 2001-04-19 2002-03-25 Optical microphone construction

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IL142689 2001-04-19
IL14268901A IL142689A0 (en) 2001-04-19 2001-04-19 Optical microphone construction

Publications (2)

Publication Number Publication Date
WO2002087278A2 WO2002087278A2 (en) 2002-10-31
WO2002087278A3 true WO2002087278A3 (en) 2004-03-18

Family

ID=11075332

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IL2002/000241 WO2002087278A2 (en) 2001-04-19 2002-03-25 Optical microphone construction

Country Status (3)

Country Link
AU (1) AU2002251443A1 (en)
IL (1) IL142689A0 (en)
WO (1) WO2002087278A2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IL142347A0 (en) * 2001-04-01 2002-03-10 Phone Or Ltd Optical microphone for communication and other devices
DE10314731A1 (en) * 2003-03-31 2004-10-28 Sennheiser Electronic Gmbh & Co. Kg Sensor or microphone with such a sensor
US11921956B2 (en) 2018-12-21 2024-03-05 Ams Sensors Singapore Pte. Ltd. Optical distance sensing using a target surface having a non-uniform design of regions of different reflectivity

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5333205A (en) * 1993-03-01 1994-07-26 Motorola, Inc. Microphone assembly
GB2335108A (en) * 1998-03-07 1999-09-08 Sennheiser Electronic An optical microphone
WO2001028286A1 (en) * 1999-10-15 2001-04-19 Phone-Or Ltd. Optical microphone element and optical microphone

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5333205A (en) * 1993-03-01 1994-07-26 Motorola, Inc. Microphone assembly
GB2335108A (en) * 1998-03-07 1999-09-08 Sennheiser Electronic An optical microphone
WO2001028286A1 (en) * 1999-10-15 2001-04-19 Phone-Or Ltd. Optical microphone element and optical microphone

Also Published As

Publication number Publication date
IL142689A0 (en) 2002-03-10
WO2002087278A2 (en) 2002-10-31
AU2002251443A1 (en) 2002-11-05

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