BE765248A - Interferometre comportant un seul reflecteur en forme de triedre - Google Patents

Interferometre comportant un seul reflecteur en forme de triedre

Info

Publication number
BE765248A
BE765248A BE765248A BE765248A BE765248A BE 765248 A BE765248 A BE 765248A BE 765248 A BE765248 A BE 765248A BE 765248 A BE765248 A BE 765248A BE 765248 A BE765248 A BE 765248A
Authority
BE
Belgium
Prior art keywords
triedre
interferometer
shaped reflector
reflector
shaped
Prior art date
Application number
BE765248A
Other languages
English (en)
French (fr)
Inventor
F R Stone
Original Assignee
Doall Co
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 Doall Co filed Critical Doall Co
Publication of BE765248A publication Critical patent/BE765248A/xx

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
    • G01B9/02056—Passive reduction of errors
    • G01B9/02061—Reduction or prevention of effects of tilts or misalignment
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Instruments For Measurement Of Length By Optical Means (AREA)
BE765248A 1970-08-10 1971-04-05 Interferometre comportant un seul reflecteur en forme de triedre BE765248A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US6247970A 1970-08-10 1970-08-10

Publications (1)

Publication Number Publication Date
BE765248A true BE765248A (fr) 1971-08-30

Family

ID=22042773

Family Applications (1)

Application Number Title Priority Date Filing Date
BE765248A BE765248A (fr) 1970-08-10 1971-04-05 Interferometre comportant un seul reflecteur en forme de triedre

Country Status (4)

Country Link
BE (1) BE765248A (xx)
DE (1) DE2123667A1 (xx)
FR (1) FR2117014A5 (xx)
NL (1) NL7107593A (xx)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0611438B1 (en) * 1991-11-08 1996-07-03 British Technology Group Ltd Optical measuring instruments

Also Published As

Publication number Publication date
DE2123667A1 (de) 1972-02-17
NL7107593A (xx) 1972-02-14
FR2117014A5 (xx) 1972-07-21

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