FR2160682B1 - - Google Patents

Info

Publication number
FR2160682B1
FR2160682B1 FR7241374A FR7241374A FR2160682B1 FR 2160682 B1 FR2160682 B1 FR 2160682B1 FR 7241374 A FR7241374 A FR 7241374A FR 7241374 A FR7241374 A FR 7241374A FR 2160682 B1 FR2160682 B1 FR 2160682B1
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
FR7241374A
Other versions
FR2160682A1 (fr
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.)
Applied Biosystems Inc
Original Assignee
Perkin Elmer Corp
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 Perkin Elmer Corp filed Critical Perkin Elmer Corp
Publication of FR2160682A1 publication Critical patent/FR2160682A1/fr
Application granted granted Critical
Publication of FR2160682B1 publication Critical patent/FR2160682B1/fr
Expired legal-status Critical Current

Links

Classifications

    • 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
    • G01B9/02075—Reduction or prevention of errors; Testing; Calibration of particular errors
    • G01B9/02078—Caused by ambiguity
    • G01B9/02079—Quadrature detection, i.e. detecting relatively phase-shifted signals
    • G01B9/02081—Quadrature detection, i.e. detecting relatively phase-shifted signals simultaneous quadrature detection, e.g. by spatial phase shifting
    • 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
    • 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
    • G01B2290/70—Using polarization in the interferometer

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Instruments For Measurement Of Length By Optical Means (AREA)
FR7241374A 1971-11-15 1972-11-15 Expired FR2160682B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US19858171A 1971-11-15 1971-11-15

Publications (2)

Publication Number Publication Date
FR2160682A1 FR2160682A1 (fr) 1973-06-29
FR2160682B1 true FR2160682B1 (fr) 1974-08-19

Family

ID=22733971

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7241374A Expired FR2160682B1 (fr) 1971-11-15 1972-11-15

Country Status (6)

Country Link
US (1) US3771875A (fr)
JP (1) JPS4862456A (fr)
CH (1) CH546946A (fr)
DE (1) DE2255446A1 (fr)
FR (1) FR2160682B1 (fr)
IT (1) IT970500B (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5081577A (fr) * 1973-11-22 1975-07-02
JPS5122463A (fr) * 1974-08-17 1976-02-23 Kurashiki Boseki Kk
DE2963043D1 (en) * 1978-01-13 1982-07-29 Nat Res Dev Interferometer systems
US4255048A (en) * 1979-04-06 1981-03-10 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Direction sensitive laser velocimeter
FR2483609A1 (fr) * 1980-05-30 1981-12-04 Balasubramanian N Dispositif et procede de determination interferometrique d'une difference de longueur de chemin optique
JPS57127331A (en) * 1981-01-30 1982-08-07 Anritsu Corp Waveform shaping device
US4702603A (en) * 1985-07-23 1987-10-27 Cmx Systems, Inc. Optical phase decoder for interferometers
GB8718803D0 (en) * 1987-08-07 1987-09-16 Renishaw Plc Optical detection system
US5638396A (en) * 1994-09-19 1997-06-10 Textron Systems Corporation Laser ultrasonics-based material analysis system and method

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3601490A (en) * 1966-12-30 1971-08-24 Keuffel & Esser Co Laser interferometer

Also Published As

Publication number Publication date
DE2255446A1 (de) 1973-05-24
IT970500B (it) 1974-04-10
JPS4862456A (fr) 1973-08-31
CH546946A (de) 1974-03-15
FR2160682A1 (fr) 1973-06-29
US3771875A (en) 1973-11-13

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Legal Events

Date Code Title Description
ST Notification of lapse