FR2082403A5 - - Google Patents

Info

Publication number
FR2082403A5
FR2082403A5 FR7009098A FR7009098A FR2082403A5 FR 2082403 A5 FR2082403 A5 FR 2082403A5 FR 7009098 A FR7009098 A FR 7009098A FR 7009098 A FR7009098 A FR 7009098A FR 2082403 A5 FR2082403 A5 FR 2082403A5
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
FR7009098A
Other languages
French (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.)
Thales SA
Original Assignee
Thomson CSF SA
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 Thomson CSF SA filed Critical Thomson CSF SA
Priority to FR7009098A priority Critical patent/FR2082403A5/fr
Priority to DE19712111936 priority patent/DE2111936C3/de
Priority to GB2400371A priority patent/GB1345204A/en
Application granted granted Critical
Publication of FR2082403A5 publication Critical patent/FR2082403A5/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
    • G01B2290/70—Using polarization in the interferometer

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Instruments For Measurement Of Length By Optical Means (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
FR7009098A 1970-03-13 1970-03-13 Expired FR2082403A5 (de)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FR7009098A FR2082403A5 (de) 1970-03-13 1970-03-13
DE19712111936 DE2111936C3 (de) 1970-03-13 1971-03-12 Interferometrische Anordnung zur Lieferung verschachtelter, gegeneinander phasenverschobener elektrischer Signale
GB2400371A GB1345204A (en) 1970-03-13 1971-04-19 Interferometer systems for sensing the idsplacement of an object

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7009098A FR2082403A5 (de) 1970-03-13 1970-03-13

Publications (1)

Publication Number Publication Date
FR2082403A5 true FR2082403A5 (de) 1971-12-10

Family

ID=9052235

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7009098A Expired FR2082403A5 (de) 1970-03-13 1970-03-13

Country Status (3)

Country Link
DE (1) DE2111936C3 (de)
FR (1) FR2082403A5 (de)
GB (1) GB1345204A (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2963043D1 (en) * 1978-01-13 1982-07-29 Nat Res Dev Interferometer systems
DE2926738C2 (de) * 1979-07-03 1982-10-28 Ibm Deutschland Gmbh, 7000 Stuttgart Verfahren zur interferometrischen Oberflächenformanalyse
US4583855A (en) * 1984-02-17 1986-04-22 Lockheed Missiles & Space Company, Inc. Optical phase measuring apparatus
US4702603A (en) * 1985-07-23 1987-10-27 Cmx Systems, Inc. Optical phase decoder for interferometers

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1085350B (de) * 1957-07-02 1960-07-14 Leitz Ernst Gmbh Interferometer
NL6515207A (de) * 1965-11-24 1967-05-25

Also Published As

Publication number Publication date
DE2111936C3 (de) 1981-04-23
DE2111936B2 (de) 1980-09-04
GB1345204A (en) 1974-01-30
DE2111936A1 (de) 1971-09-23

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Legal Events

Date Code Title Description
CL Concession to grant licenses
ST Notification of lapse