JPS52131752A - Precise length measuring method utilizing oscillation area of two freq uencies of laser beams - Google Patents

Precise length measuring method utilizing oscillation area of two freq uencies of laser beams

Info

Publication number
JPS52131752A
JPS52131752A JP4789076A JP4789076A JPS52131752A JP S52131752 A JPS52131752 A JP S52131752A JP 4789076 A JP4789076 A JP 4789076A JP 4789076 A JP4789076 A JP 4789076A JP S52131752 A JPS52131752 A JP S52131752A
Authority
JP
Japan
Prior art keywords
laser beams
measuring method
length measuring
method utilizing
precise length
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
JP4789076A
Other languages
English (en)
Inventor
Keiichi Tanaka
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.)
National Institute of Advanced Industrial Science and Technology AIST
Original Assignee
Agency of Industrial Science and Technology
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 Agency of Industrial Science and Technology filed Critical Agency of Industrial Science and Technology
Priority to JP4789076A priority Critical patent/JPS52131752A/ja
Publication of JPS52131752A publication Critical patent/JPS52131752A/ja
Pending 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
JP4789076A 1976-04-28 1976-04-28 Precise length measuring method utilizing oscillation area of two freq uencies of laser beams Pending JPS52131752A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4789076A JPS52131752A (en) 1976-04-28 1976-04-28 Precise length measuring method utilizing oscillation area of two freq uencies of laser beams

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4789076A JPS52131752A (en) 1976-04-28 1976-04-28 Precise length measuring method utilizing oscillation area of two freq uencies of laser beams

Publications (1)

Publication Number Publication Date
JPS52131752A true JPS52131752A (en) 1977-11-04

Family

ID=12787987

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4789076A Pending JPS52131752A (en) 1976-04-28 1976-04-28 Precise length measuring method utilizing oscillation area of two freq uencies of laser beams

Country Status (1)

Country Link
JP (1) JPS52131752A (ja)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02287105A (ja) * 1989-04-27 1990-11-27 Yokogawa Electric Corp アブソリュート測長器
JP2006184181A (ja) * 2004-12-28 2006-07-13 National Institute Of Advanced Industrial & Technology 距離測定装置
JP2006518037A (ja) * 2003-02-19 2006-08-03 ライカ ジオシステムズ アクチェンゲゼルシャフト 測地距離データを得る方法及び装置

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02287105A (ja) * 1989-04-27 1990-11-27 Yokogawa Electric Corp アブソリュート測長器
JPH07119568B2 (ja) * 1989-04-27 1995-12-20 横河電機株式会社 アブソリュート測長器
JP2006518037A (ja) * 2003-02-19 2006-08-03 ライカ ジオシステムズ アクチェンゲゼルシャフト 測地距離データを得る方法及び装置
US7982859B2 (en) 2003-02-19 2011-07-19 Leica Geosystems Ag Method and device for deriving geodetic distance data
JP2006184181A (ja) * 2004-12-28 2006-07-13 National Institute Of Advanced Industrial & Technology 距離測定装置
JP4617434B2 (ja) * 2004-12-28 2011-01-26 独立行政法人産業技術総合研究所 距離測定装置

Similar Documents

Publication Publication Date Title
ES2017144A6 (es) Metodo y aparato para la deteccion de un gas mediante espectroscopia fotoacustica.
JPS5317369A (en) Laser distance measuring apparatus by principle of running time measurement
JPS5499691A (en) Ultrasonic wave inspection method and ultrasonic wave probe aggregate
JPS52131752A (en) Precise length measuring method utilizing oscillation area of two freq uencies of laser beams
JPS5636180A (en) Gas laser capable of irradiating beam of stabilized frequency by pulse
FR2341873A1 (fr) Dispositif de combinaison de faisceaux laser de differentes frequences
JPS5334581A (en) Infrared absorption detector
SU556359A1 (ru) Способ измерени нат жени проводников
JPS5295274A (en) Coaxial probe for high frequency measurement
JPS5411592A (en) Apparatus for forming bores in wall of pipe
JPS5339596A (en) Laser trimming device
JPS52130651A (en) Optical fiber apparatus
JPS5210757A (en) Measuring method of a jet solder wave
JPS523487A (en) Testing method and device of the bonding quality on the electric part of metal
JPS52107886A (en) Tension detector for steel strip
JPS52143046A (en) Matching of laser beam shapes
JPS54123997A (en) Remote measuring method of atmospheric components
JPS54156599A (en) Thermal diffusivity measuring apparatus
FR2422155A1 (fr) Dispositif pour etudier un fluide par diffusion raman anti-stokes coherente et application s'y rapportant
JPS5766337A (en) Measuring method for photo transmission characteristics
JPS5358786A (en) Injection type laser device
JPS5358788A (en) Injection type laser device
JPS51113494A (en) Laser device
JPS5454687A (en) Method of measuring laser output by transmission method and measuring piezooelectric vibrator
JPS5320349A (en) Measuring method for wave length dispersion of photo-fiber