DE3377592D1 - Light frequency change detecting method and apparatus - Google Patents

Light frequency change detecting method and apparatus

Info

Publication number
DE3377592D1
DE3377592D1 DE8383302080T DE3377592T DE3377592D1 DE 3377592 D1 DE3377592 D1 DE 3377592D1 DE 8383302080 T DE8383302080 T DE 8383302080T DE 3377592 T DE3377592 T DE 3377592T DE 3377592 D1 DE3377592 D1 DE 3377592D1
Authority
DE
Germany
Prior art keywords
detecting method
frequency change
change detecting
light frequency
light
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
DE8383302080T
Other languages
English (en)
Inventor
Yoshikazu C O Osaka Nishiwaki
Yozo C O Osaka Works Nishiura
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.)
Sumitomo Electric Industries Ltd
Original Assignee
Sumitomo Electric Industries 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 Sumitomo Electric Industries Ltd filed Critical Sumitomo Electric Industries Ltd
Application granted granted Critical
Publication of DE3377592D1 publication Critical patent/DE3377592D1/de
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J9/00—Measuring optical phase difference; Determining degree of coherence; Measuring optical wavelength
    • G01J9/04—Measuring optical phase difference; Determining degree of coherence; Measuring optical wavelength by beating two waves of a same source but of different frequency and measuring the phase shift of the lower frequency obtained
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
    • G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
    • G01S17/50—Systems of measurement based on relative movement of target
    • G01S17/58—Velocity or trajectory determination systems; Sense-of-movement determination systems

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Optical Radar Systems And Details Thereof (AREA)
  • Gyroscopes (AREA)
DE8383302080T 1982-04-20 1983-04-13 Light frequency change detecting method and apparatus Expired DE3377592D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57066584A JPS58182524A (ja) 1982-04-20 1982-04-20 光周波数変化検出方式

Publications (1)

Publication Number Publication Date
DE3377592D1 true DE3377592D1 (en) 1988-09-08

Family

ID=13320141

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8383302080T Expired DE3377592D1 (en) 1982-04-20 1983-04-13 Light frequency change detecting method and apparatus

Country Status (5)

Country Link
US (1) US4569588A (de)
EP (1) EP0092369B1 (de)
JP (1) JPS58182524A (de)
CA (1) CA1211544A (de)
DE (1) DE3377592D1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105548686A (zh) * 2015-12-04 2016-05-04 电子科技大学 一种光滤波器幅频响应的测量方法

Families Citing this family (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2147758B (en) * 1983-08-24 1987-08-05 Plessey Co Plc Optical detecting and/or measuring
DK506284A (da) * 1983-11-10 1985-05-11 Mitsubishi Electric Corp Hastighedsmaaler af laser-doppler-typen
DE3419320C2 (de) * 1984-05-24 1986-09-11 Rheometron AG, Basel Optoelektrisches Entfernungsmeßgerät mit einer optischen Meßsonde
FR2567651B1 (fr) * 1984-07-12 1987-12-18 Commissariat Energie Atomique Equipement de mesure de vitesse d'un projectile par interferometrie utilisant un faisceau laser propage par un guide d'onde optique unique
US5192979A (en) * 1984-09-26 1993-03-09 Siemens Aktiengesellschaft Method and apparatus for recognizing and identifying targets
US4818071A (en) * 1985-03-26 1989-04-04 Andrew Corporation Fiber optic doppler anemometer
JPS61241630A (ja) * 1985-04-19 1986-10-27 Japan Aviation Electronics Ind Ltd 光ビ−ト周波数測定装置
JP2583410B2 (ja) * 1985-12-27 1997-02-19 横河電機株式会社 光周波数スペクトラム・アナライザ
US4856899A (en) * 1985-12-20 1989-08-15 Yokogawa Electric Corporation Optical frequency analyzer using a local oscillator heterodyne detection of incident light
JPH0610667B2 (ja) * 1986-07-28 1994-02-09 日本鋼管株式会社 非接触超音波探傷装置
JP2510619B2 (ja) * 1987-09-14 1996-06-26 浜松ホトニクス株式会社 高速移動物体の計測装置
US5090795A (en) * 1987-10-22 1992-02-25 Hughes Aircraft Company Integrated adaptive optics apparatus
US4850225A (en) * 1988-10-31 1989-07-25 Northern Telecom Limited Measuring vibrational frequency of vibratable pins
US6091523A (en) * 1989-02-07 2000-07-18 Northrop Grumman Corporation Multi-channel receiver
JPH0625774B2 (ja) * 1989-03-01 1994-04-06 登 中谷 フォトサーマル効果を用いた流体の速度と濃度の測定法 ―外乱除去型ヘテロダイン干渉法光ファイバプローブによる―
GB8906554D0 (en) * 1989-03-22 1989-05-04 Harley Phillip E Optical system for detector device
US5005946A (en) * 1989-04-06 1991-04-09 Grumman Aerospace Corporation Multi-channel filter system
SE465643B (sv) * 1990-02-22 1991-10-07 Bertil Gateman Elektrooptiskt sensorsystem foer insamling av marina seismiska data
GB9014989D0 (en) * 1990-07-06 1990-08-29 Nat Res Dev Velocimeters
IT1244170B (it) * 1990-12-04 1994-07-08 Cise Spa Apparecchiatura laser per la misura della velocita' di un fluido.
US5477324A (en) * 1994-08-26 1995-12-19 Georgia Tech Research Corporation Method and apparatus for detecting surface wave vector dynamics using three beams of coherent light
US6177983B1 (en) * 1998-09-17 2001-01-23 Microtrac, Inc. Method and system for the measurement of specific characteristics of small particles
US6362466B1 (en) * 1999-10-15 2002-03-26 Orest Fedan Optical object detection having circuitry applying logarithmic function to the average of filtered output
JP3739987B2 (ja) * 2000-02-18 2006-01-25 財団法人神奈川科学技術アカデミー トモグラフィー装置
FR2818752A1 (fr) * 2000-12-21 2002-06-28 Thomson Csf Anemometre a laser
US7126586B2 (en) * 2004-09-17 2006-10-24 Microsoft Corporation Data input devices and methods for detecting movement of a tracking surface by detecting laser doppler self-mixing effects of a frequency modulated laser light beam
JP5376459B2 (ja) * 2010-03-09 2013-12-25 独立行政法人 宇宙航空研究開発機構 光学式エアデータセンサ
US10292608B2 (en) * 2015-11-24 2019-05-21 Verily Life Sciences Llc Systems and methods for real-time laser doppler imaging

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2118874B1 (de) * 1970-12-24 1973-12-07 Comp Generale Electricite
US3984190A (en) * 1974-11-26 1976-10-05 Allied Chemical Corporation Simultaneous transmission of periodic spectral components by plural interferometric means

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105548686A (zh) * 2015-12-04 2016-05-04 电子科技大学 一种光滤波器幅频响应的测量方法
CN105548686B (zh) * 2015-12-04 2018-03-30 电子科技大学 一种光滤波器幅频响应的测量方法

Also Published As

Publication number Publication date
EP0092369A3 (en) 1984-04-18
JPS58182524A (ja) 1983-10-25
US4569588A (en) 1986-02-11
EP0092369A2 (de) 1983-10-26
EP0092369B1 (de) 1988-08-03
JPS6135495B2 (de) 1986-08-13
CA1211544A (en) 1986-09-16

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee