IT1125790B - Interferometro con risoluzione migliorata - Google Patents

Interferometro con risoluzione migliorata

Info

Publication number
IT1125790B
IT1125790B IT26097/77A IT2609777A IT1125790B IT 1125790 B IT1125790 B IT 1125790B IT 26097/77 A IT26097/77 A IT 26097/77A IT 2609777 A IT2609777 A IT 2609777A IT 1125790 B IT1125790 B IT 1125790B
Authority
IT
Italy
Prior art keywords
test surface
grating
distances
lambda
fringes
Prior art date
Application number
IT26097/77A
Other languages
English (en)
Original Assignee
Ibm
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 Ibm filed Critical Ibm
Application granted granted Critical
Publication of IT1125790B publication Critical patent/IT1125790B/it

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
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/30—Measuring arrangements characterised by the use of optical techniques for measuring roughness or irregularity of surfaces
    • G01B11/306—Measuring arrangements characterised by the use of optical techniques for measuring roughness or irregularity of surfaces for measuring evenness
    • 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
    • G01B9/02015—Interferometers characterised by the beam path configuration
    • G01B9/02032—Interferometers characterised by the beam path configuration generating a spatial carrier frequency, e.g. by creating lateral or angular offset between reference and object beam
    • 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
    • G01B9/02057—Passive reduction of errors by using common path configuration, i.e. reference and object path almost entirely overlapping
    • 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
    • G01B2290/30—Grating as beam-splitter

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Instruments For Measurement Of Length By Optical Means (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)
  • Optical Transform (AREA)
IT26097/77A 1976-08-12 1977-07-26 Interferometro con risoluzione migliorata IT1125790B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19762636211 DE2636211C2 (de) 1976-08-12 1976-08-12 Interferometrisches Verfahren zur Abstands- oder Ebenheitsmessung

Publications (1)

Publication Number Publication Date
IT1125790B true IT1125790B (it) 1986-05-14

Family

ID=5985252

Family Applications (1)

Application Number Title Priority Date Filing Date
IT26097/77A IT1125790B (it) 1976-08-12 1977-07-26 Interferometro con risoluzione migliorata

Country Status (6)

Country Link
US (1) US4188124A (it)
JP (1) JPS6036003B2 (it)
DE (1) DE2636211C2 (it)
FR (1) FR2361628A1 (it)
GB (1) GB1582661A (it)
IT (1) IT1125790B (it)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2758149C2 (de) * 1977-12-27 1979-10-04 Ibm Deutschland Gmbh, 7000 Stuttgart Interferometrisches Verfahren mit λ /4-Auflösung zur Abstands-, Dicken- und/oder Ebenheitsmessung
FR2504256A1 (fr) * 1981-04-16 1982-10-22 Euromask Procede et dispositif de mesure optique de deplacement et application aux photorepeteurs sur tranche
DE3175207D1 (en) * 1981-05-29 1986-10-02 Ibm Deutschland Process and device for interferometric evenness measurement
US4656347A (en) * 1984-01-30 1987-04-07 Nippon Telegraph & Telephone Public Corporation Diffraction grating position adjuster using a grating and a reflector
US4641972A (en) * 1984-09-14 1987-02-10 New York Institute Of Technology Method and apparatus for surface profilometry
US4657394A (en) * 1984-09-14 1987-04-14 New York Institute Of Technology Apparatus and method for obtaining three dimensional surface contours
US5636025A (en) * 1992-04-23 1997-06-03 Medar, Inc. System for optically measuring the surface contour of a part using more fringe techniques
CA2067400A1 (en) * 1992-04-28 1993-10-29 Robert E. Bredberg Laser thickness gauge
GB9405457D0 (en) * 1994-03-19 1994-05-04 British Aerospace Testing a metal component for cold compression of the metal
JP3158878B2 (ja) * 1994-07-28 2001-04-23 松下電器産業株式会社 光学式エンコーダ
US5953448A (en) * 1996-03-01 1999-09-14 Textile/Clothing Technology Corporation Contour measurement of an object having a discontinuous surface using block point identification techniques
CA2322874A1 (en) * 1998-03-09 1999-09-16 Otm Technologies, Ltd. Optical translation measurement
US6424407B1 (en) 1998-03-09 2002-07-23 Otm Technologies Ltd. Optical translation measurement
WO1999046602A1 (en) 1998-03-09 1999-09-16 Gou Lite Ltd. Optical translation measurement
JP2005512018A (ja) * 2001-03-29 2005-04-28 ジョージア テック リサーチ コーポレイション 性能が最適化されたマイクロ干渉計
US6643025B2 (en) 2001-03-29 2003-11-04 Georgia Tech Research Corporation Microinterferometer for distance measurements
US7116430B2 (en) * 2002-03-29 2006-10-03 Georgia Technology Research Corporation Highly-sensitive displacement-measuring optical device
US7440117B2 (en) * 2002-03-29 2008-10-21 Georgia Tech Research Corp. Highly-sensitive displacement-measuring optical device
US7518737B2 (en) * 2002-03-29 2009-04-14 Georgia Tech Research Corp. Displacement-measuring optical device with orifice
US7485847B2 (en) * 2004-12-08 2009-02-03 Georgia Tech Research Corporation Displacement sensor employing discrete light pulse detection
CN106908325B (zh) * 2017-01-13 2020-09-01 西南交通大学 基于光栅衍射的杨氏模量微小伸长量测量装置及测量方法

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2150037A5 (it) * 1971-08-09 1973-03-30 Ibm

Also Published As

Publication number Publication date
FR2361628A1 (fr) 1978-03-10
FR2361628B1 (it) 1980-12-19
JPS5337090A (en) 1978-04-05
US4188124A (en) 1980-02-12
JPS6036003B2 (ja) 1985-08-17
GB1582661A (en) 1981-01-14
DE2636211C2 (de) 1978-01-26
DE2636211B1 (de) 1977-06-02

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