GB1419111A - Photoelectric transducer - Google Patents

Photoelectric transducer

Info

Publication number
GB1419111A
GB1419111A GB4937972A GB4937972A GB1419111A GB 1419111 A GB1419111 A GB 1419111A GB 4937972 A GB4937972 A GB 4937972A GB 4937972 A GB4937972 A GB 4937972A GB 1419111 A GB1419111 A GB 1419111A
Authority
GB
United Kingdom
Prior art keywords
membrane
signal
detector
null position
electrostatic
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
GB4937972A
Other languages
English (en)
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.)
NAT RES DEV
National Research Development Corp UK
Original Assignee
NAT RES DEV
National Research Development Corp UK
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 NAT RES DEV, National Research Development Corp UK filed Critical NAT RES DEV
Priority to GB4937972A priority Critical patent/GB1419111A/en
Priority to DE19732308785 priority patent/DE2308785A1/de
Priority to JP2258773A priority patent/JPS496946A/ja
Publication of GB1419111A publication Critical patent/GB1419111A/en
Expired 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L9/00—Measuring steady of quasi-steady pressure of fluid or fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means
    • G01L9/0041—Transmitting or indicating the displacement of flexible diaphragms
    • G01L9/0076—Transmitting or indicating the displacement of flexible diaphragms using photoelectric means
    • G01L9/0077—Transmitting or indicating the displacement of flexible diaphragms using photoelectric means for measuring reflected light
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers, loudspeakers or microphones
    • H04R3/002—Damping circuit arrangements for transducers, e.g. motional feedback circuits

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Fluid Pressure (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Optical Transform (AREA)
GB4937972A 1972-02-24 1972-10-26 Photoelectric transducer Expired GB1419111A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB4937972A GB1419111A (en) 1972-02-24 1972-10-26 Photoelectric transducer
DE19732308785 DE2308785A1 (de) 1972-02-24 1973-02-22 Einrichtung zum messen von druckdifferenzen mittels einer membran
JP2258773A JPS496946A (enExample) 1972-02-24 1973-02-24

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB850172 1972-02-24
GB4937972A GB1419111A (en) 1972-02-24 1972-10-26 Photoelectric transducer
GB5435172 1972-11-24

Publications (1)

Publication Number Publication Date
GB1419111A true GB1419111A (en) 1975-12-24

Family

ID=27255212

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4937972A Expired GB1419111A (en) 1972-02-24 1972-10-26 Photoelectric transducer

Country Status (3)

Country Link
JP (1) JPS496946A (enExample)
DE (1) DE2308785A1 (enExample)
GB (1) GB1419111A (enExample)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2197151A (en) * 1986-09-10 1988-05-11 Joseph Colin Whitehouse Rangefinder
EP1734784A4 (en) * 2004-04-05 2007-11-21 Matsushita Electric Industrial Co Ltd Speaker Setup
US10406033B2 (en) * 2016-09-01 2019-09-10 Novartis Ag Systems and methods for non-invasive measurement of cassette pressure

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3142164A1 (de) * 1980-10-27 1982-06-16 Rosemount Engineering Co. Ltd., Bognor Regis, Sussex Vorrichtung zur messung von druckunterschieden
US4568414A (en) * 1984-09-21 1986-02-04 At&T Technologies, Inc. Methods and apparatus for tensioning sheet material
DE3517054C1 (de) * 1985-05-11 1986-03-13 Messerschmitt-Bölkow-Blohm GmbH, 8012 Ottobrunn Optoelektrischer Geber zur Messung mechanischer Größen

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2197151A (en) * 1986-09-10 1988-05-11 Joseph Colin Whitehouse Rangefinder
GB2197151B (en) * 1986-09-10 1991-03-20 Joseph Colin Whitehouse Improvements in and relating to rangefinders
EP1734784A4 (en) * 2004-04-05 2007-11-21 Matsushita Electric Industrial Co Ltd Speaker Setup
US7724915B2 (en) 2004-04-05 2010-05-25 Panasonic Corporation Speaker device
US10406033B2 (en) * 2016-09-01 2019-09-10 Novartis Ag Systems and methods for non-invasive measurement of cassette pressure

Also Published As

Publication number Publication date
JPS496946A (enExample) 1974-01-22
DE2308785A1 (de) 1973-10-11

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees