SE8007100L - SET AND DEVICE FOR CALIBRATION OF AN OPTICAL METAN DEVICE - Google Patents

SET AND DEVICE FOR CALIBRATION OF AN OPTICAL METAN DEVICE

Info

Publication number
SE8007100L
SE8007100L SE8007100A SE8007100A SE8007100L SE 8007100 L SE8007100 L SE 8007100L SE 8007100 A SE8007100 A SE 8007100A SE 8007100 A SE8007100 A SE 8007100A SE 8007100 L SE8007100 L SE 8007100L
Authority
SE
Sweden
Prior art keywords
tube
interferometer
wavelength
calibration
light
Prior art date
Application number
SE8007100A
Other languages
Unknown language ( )
Swedish (sv)
Inventor
C L Farrand
W H Grace
E W Murray
Original Assignee
Farrand Ind Inc
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 Farrand Ind Inc filed Critical Farrand Ind Inc
Publication of SE8007100L publication Critical patent/SE8007100L/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/41—Refractivity; Phase-affecting properties, e.g. optical path length
    • G01N21/45—Refractivity; Phase-affecting properties, e.g. optical path length using interferometric methods; using Schlieren methods

Landscapes

  • General Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Instruments For Measurement Of Length By Optical Means (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Measurement Of Optical Distance (AREA)
  • Optical Radar Systems And Details Thereof (AREA)

Abstract

An evacuable tube (30) is used to separate two optical elements (32, 34) spaced at a known predetermined length L. A laser interferometer (20) is arranged to measure the change in apparent distance DELTA between the elements (32, 34) when the tube is filled with ambient air and when the tube is evacuated. An interferometer calibration factor VA can then be determined from the equation VA=1- DELTA /L, where VA is the ratio of the wavelength of light in vacuum to the wavelength of the light in ambient air. This calibration factor VA is used to correct further interferometer measurements for existing ambient environmental conditions of temperature, relative humidity and atmospheric pressure. <IMAGE>
SE8007100A 1979-10-12 1980-10-10 SET AND DEVICE FOR CALIBRATION OF AN OPTICAL METAN DEVICE SE8007100L (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US8421979A 1979-10-12 1979-10-12

Publications (1)

Publication Number Publication Date
SE8007100L true SE8007100L (en) 1981-04-13

Family

ID=22183567

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8007100A SE8007100L (en) 1979-10-12 1980-10-10 SET AND DEVICE FOR CALIBRATION OF AN OPTICAL METAN DEVICE

Country Status (10)

Country Link
JP (1) JPS5664604A (en)
AU (1) AU6310680A (en)
BR (1) BR8006560A (en)
DE (1) DE3037567A1 (en)
FR (1) FR2467383A1 (en)
GB (1) GB2060931A (en)
IL (1) IL61217A0 (en)
IT (1) IT1130528B (en)
NO (1) NO803055L (en)
SE (1) SE8007100L (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59218903A (en) * 1983-05-27 1984-12-10 Sumitomo Electric Ind Ltd Optical measuring device
DE3401900A1 (en) * 1984-01-20 1985-08-01 Fa. Carl Zeiss, 7920 Heidenheim Interferometer for linear or angular measurement
JPS6255501A (en) * 1985-09-04 1987-03-11 Canon Inc Laser length measuring apparatus
JPS6428502A (en) * 1987-07-23 1989-01-31 Yokogawa Electric Corp Length measuring device
DE8907250U1 (en) * 1989-06-14 1989-08-10 Dr. Johannes Heidenhain Gmbh, 8225 Traunreut Laser interferometer - refractometer
US5940180A (en) * 1994-10-11 1999-08-17 Giddings & Lewis Laser interferometer measurement system for use with machine tools
US6791695B2 (en) * 1999-06-16 2004-09-14 Bandag Licensing Corporation Shearographic imaging machine with archive memory for animation data and air handling system
CN103033338B (en) * 2012-12-12 2015-06-10 中国科学院长春光学精密机械与物理研究所 Flat field calibrating device and flat field calibrating method of vacuum ultraviolet band imaging system

Also Published As

Publication number Publication date
IL61217A0 (en) 1980-12-31
BR8006560A (en) 1981-04-14
GB2060931A (en) 1981-05-07
NO803055L (en) 1981-04-13
DE3037567A1 (en) 1981-05-07
IT1130528B (en) 1986-06-18
IT8068554A0 (en) 1980-10-09
AU6310680A (en) 1981-04-16
FR2467383A1 (en) 1981-04-17
JPS5664604A (en) 1981-06-01

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