FR2230969B1 - - Google Patents

Info

Publication number
FR2230969B1
FR2230969B1 FR7318751A FR7318751A FR2230969B1 FR 2230969 B1 FR2230969 B1 FR 2230969B1 FR 7318751 A FR7318751 A FR 7318751A FR 7318751 A FR7318751 A FR 7318751A FR 2230969 B1 FR2230969 B1 FR 2230969B1
Authority
FR
France
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
FR7318751A
Other languages
French (fr)
Other versions
FR2230969A1 (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.)
Office National dEtudes et de Recherches Aerospatiales ONERA
Original Assignee
Office National dEtudes et de Recherches Aerospatiales ONERA
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 Office National dEtudes et de Recherches Aerospatiales ONERA filed Critical Office National dEtudes et de Recherches Aerospatiales ONERA
Priority to FR7318751A priority Critical patent/FR2230969B1/fr
Priority to GB1760574A priority patent/GB1463537A/en
Priority to DE19742420732 priority patent/DE2420732C3/en
Publication of FR2230969A1 publication Critical patent/FR2230969A1/fr
Priority to US05/606,324 priority patent/US4013366A/en
Application granted granted Critical
Publication of FR2230969B1 publication Critical patent/FR2230969B1/fr
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/48—Laser speckle optics
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B9/00—Measuring instruments characterised by the use of optical techniques
    • G01B9/02—Interferometers
    • G01B9/02055—Reduction or prevention of errors; Testing; Calibration
    • G01B9/02062—Active error reduction, i.e. varying with time
    • G01B9/02067—Active error reduction, i.e. varying with time by electronic control systems, i.e. using feedback acting on optics or light
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B2290/00—Aspects of interferometers not specifically covered by any group under G01B9/02
    • G01B2290/40—Non-mechanical variable delay line
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B2290/00—Aspects of interferometers not specifically covered by any group under G01B9/02
    • G01B2290/45—Multiple detectors for detecting interferometer signals
FR7318751A 1973-05-23 1973-05-23 Expired FR2230969B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
FR7318751A FR2230969B1 (en) 1973-05-23 1973-05-23
GB1760574A GB1463537A (en) 1973-05-23 1974-04-22 Method and apparatus for investigation of small displacements of a solid body by means of coherent light
DE19742420732 DE2420732C3 (en) 1973-05-23 1974-04-29 Arrangement for investigating the movement of a solid body with a coherent light source
US05/606,324 US4013366A (en) 1973-05-23 1975-08-20 Method and apparatus for investigation of small displacements of a solid body by means of coherent light

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7318751A FR2230969B1 (en) 1973-05-23 1973-05-23

Publications (2)

Publication Number Publication Date
FR2230969A1 FR2230969A1 (en) 1974-12-20
FR2230969B1 true FR2230969B1 (en) 1976-04-23

Family

ID=9119850

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7318751A Expired FR2230969B1 (en) 1973-05-23 1973-05-23

Country Status (3)

Country Link
DE (1) DE2420732C3 (en)
FR (1) FR2230969B1 (en)
GB (1) GB1463537A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3029776C2 (en) * 1980-08-06 1983-04-07 Krautkrämer, GmbH, 5000 Köln Method for the contactless reception of ultrasonic waves
GB8522820D0 (en) * 1985-09-16 1985-10-23 Montgomery P C Interferometric measurement
DE4427692A1 (en) * 1994-08-04 1996-02-08 Bayerische Motoren Werke Ag Method for determining the vibration behavior of a body

Also Published As

Publication number Publication date
DE2420732A1 (en) 1974-12-19
DE2420732B2 (en) 1978-11-02
DE2420732C3 (en) 1979-07-12
FR2230969A1 (en) 1974-12-20
GB1463537A (en) 1977-02-02

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