IT1246572B - Procedimento e apparecchio per misure interferometriche assolute di grandezze fisiche. - Google Patents

Procedimento e apparecchio per misure interferometriche assolute di grandezze fisiche.

Info

Publication number
IT1246572B
IT1246572B ITMI910509A ITMI910509A IT1246572B IT 1246572 B IT1246572 B IT 1246572B IT MI910509 A ITMI910509 A IT MI910509A IT MI910509 A ITMI910509 A IT MI910509A IT 1246572 B IT1246572 B IT 1246572B
Authority
IT
Italy
Prior art keywords
procedure
frequency
physical sizes
interferometric measurements
absolute interferometric
Prior art date
Application number
ITMI910509A
Other languages
English (en)
Inventor
Valeria Gusmeroli
Mario Martinelli
Original Assignee
Cise Spa
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 Cise Spa filed Critical Cise Spa
Priority to ITMI910509A priority Critical patent/IT1246572B/it
Publication of ITMI910509A0 publication Critical patent/ITMI910509A0/it
Priority to EP92200450A priority patent/EP0501559B1/en
Priority to DE69202780T priority patent/DE69202780T2/de
Priority to US07/838,886 priority patent/US5333045A/en
Publication of ITMI910509A1 publication Critical patent/ITMI910509A1/it
Application granted granted Critical
Publication of IT1246572B publication Critical patent/IT1246572B/it

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
    • G01D5/32—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light
    • G01D5/34—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells
    • G01D5/353—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre
    • G01D5/35303—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells influencing the transmission properties of an optical fibre using a reference fibre, e.g. interferometric devices
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
    • G01D5/266—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light by interferometric means

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Instruments For Measurement Of Length By Optical Means (AREA)
  • Length Measuring Devices By Optical Means (AREA)

Abstract

Una sorgente superluminescente (1) emette un fascio luminoso ad ampia banda, che è modulato in frequenza da un filtro (3, 13) con banda passante centrata su una frequenza fatta variare secondo una legge predeterminata per modulare in frequenza il segnale luminoso. Mezzi separatori e ricombinatori di fascio (5; 21, 22; 32) determinano uno sfasamento reciproco tra due componenti del fascio che dipende dalla grandezza fisica da misurare ed è rivelato da un rivelatore (8) come indicazione del valore della grandezza stessa. (Fig.1)
ITMI910509A 1991-02-27 1991-02-27 Procedimento e apparecchio per misure interferometriche assolute di grandezze fisiche. IT1246572B (it)

Priority Applications (4)

Application Number Priority Date Filing Date Title
ITMI910509A IT1246572B (it) 1991-02-27 1991-02-27 Procedimento e apparecchio per misure interferometriche assolute di grandezze fisiche.
EP92200450A EP0501559B1 (en) 1991-02-27 1992-02-18 Process and apparatus for absolute interferometric measurements of physical magnitudes
DE69202780T DE69202780T2 (de) 1991-02-27 1992-02-18 Verfahren und Vorrichtung für interferometrische Absolutmessungen physikalischer Grössen.
US07/838,886 US5333045A (en) 1991-02-27 1992-02-21 Process and apparatus for absolute interferometric measurement of physical magnitudes utilizing a variable center frequency pass-band filter located downstream of a light beam source

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITMI910509A IT1246572B (it) 1991-02-27 1991-02-27 Procedimento e apparecchio per misure interferometriche assolute di grandezze fisiche.

Publications (3)

Publication Number Publication Date
ITMI910509A0 ITMI910509A0 (it) 1991-02-27
ITMI910509A1 ITMI910509A1 (it) 1992-08-27
IT1246572B true IT1246572B (it) 1994-11-24

Family

ID=11358771

Family Applications (1)

Application Number Title Priority Date Filing Date
ITMI910509A IT1246572B (it) 1991-02-27 1991-02-27 Procedimento e apparecchio per misure interferometriche assolute di grandezze fisiche.

Country Status (4)

Country Link
US (1) US5333045A (it)
EP (1) EP0501559B1 (it)
DE (1) DE69202780T2 (it)
IT (1) IT1246572B (it)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT399222B (de) * 1992-10-19 1995-04-25 Tabarelli Werner Interferometrische einrichtung zur messung der lage eines reflektierenden objektes
WO1994011708A1 (en) * 1992-11-06 1994-05-26 Martin Marietta Corporation Interferometric optical sensor read-out system
US6279829B1 (en) * 1999-06-09 2001-08-28 Psc Scanning, Inc. Method and apparatus for reducing bandwidth limited noise in an optical scanner
US7023563B2 (en) * 2003-02-14 2006-04-04 Chian Chiu Li Interferometric optical imaging and storage devices
US7061618B2 (en) * 2003-10-17 2006-06-13 Axsun Technologies, Inc. Integrated spectroscopy system
US8670129B2 (en) 2009-09-03 2014-03-11 Axsun Technologies, Inc. Filtered ASE swept source for OCT medical imaging
US8526472B2 (en) 2009-09-03 2013-09-03 Axsun Technologies, Inc. ASE swept source with self-tracking filter for OCT medical imaging

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3044183A1 (de) * 1980-11-24 1982-06-24 Reinhard Dipl.-Phys. Dr. 7250 Leonberg Ulrich Verfahren zur optischen messung von laengen und laengenaenderungen und anordnung zur durchfuehrung des verfahrens
US4890922A (en) * 1987-02-20 1990-01-02 Litton Systems, Inc. Thermally compensated reference interferometer and method
US4972077A (en) * 1988-08-08 1990-11-20 Schlumberger Industries Limited Wavelength multiplexed optical transducer with a swept wavelength optical source
US4886363A (en) * 1988-09-06 1989-12-12 Eastman Kodak Company Quadratic frequency modulated absolute distance measuring interferometry
FR2636425B1 (fr) * 1988-09-14 1990-11-30 Photonetics Dispositif de mesure a fibre optique, gyrometre, centrale de navigation et de stabilisation

Also Published As

Publication number Publication date
US5333045A (en) 1994-07-26
ITMI910509A0 (it) 1991-02-27
EP0501559A1 (en) 1992-09-02
DE69202780D1 (de) 1995-07-13
ITMI910509A1 (it) 1992-08-27
EP0501559B1 (en) 1995-06-07
DE69202780T2 (de) 1996-03-14

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Legal Events

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0001 Granted
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19960222