GB0103065D0 - Interferometer - Google Patents

Interferometer

Info

Publication number
GB0103065D0
GB0103065D0 GB0103065A GB0103065A GB0103065D0 GB 0103065 D0 GB0103065 D0 GB 0103065D0 GB 0103065 A GB0103065 A GB 0103065A GB 0103065 A GB0103065 A GB 0103065A GB 0103065 D0 GB0103065 D0 GB 0103065D0
Authority
GB
United Kingdom
Prior art keywords
interferometer
Prior art date
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.)
Withdrawn
Application number
GB0103065A
Other versions
GB2372097A (en
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.)
IMAGE AUTOMATION Ltd
Original Assignee
IMAGE AUTOMATION Ltd
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 IMAGE AUTOMATION Ltd filed Critical IMAGE AUTOMATION Ltd
Priority to GB0103065A priority Critical patent/GB2372097A/en
Publication of GB0103065D0 publication Critical patent/GB0103065D0/en
Priority to PCT/GB2002/000469 priority patent/WO2002063237A2/en
Priority to AU2002228216A priority patent/AU2002228216A1/en
Publication of GB2372097A publication Critical patent/GB2372097A/en
Withdrawn legal-status Critical Current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
    • G01B9/02083—Interferometers characterised by particular signal processing and presentation
    • 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
    • G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
    • G01H9/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by using radiation-sensitive means, e.g. optical means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/36—Devices characterised by the use of optical means, e.g. using infrared, visible, or ultraviolet light
    • G01P3/366—Devices characterised by the use of optical means, e.g. using infrared, visible, or ultraviolet light by using diffraction of light
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
    • G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
    • G01S17/50—Systems of measurement based on relative movement of target
    • G01S17/58—Velocity or trajectory determination systems; Sense-of-movement determination systems
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
    • G01S17/88—Lidar systems specially adapted for specific applications
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
    • G01S7/481—Constructional features, e.g. arrangements of optical elements
    • G01S7/4811—Constructional features, e.g. arrangements of optical elements common to transmitter and receiver
    • 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
    • G01B2290/45—Multiple detectors for detecting interferometer signals
    • 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)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Instruments For Measurement Of Length By Optical Means (AREA)
GB0103065A 2001-02-07 2001-02-07 Multiple beam interferometer Withdrawn GB2372097A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB0103065A GB2372097A (en) 2001-02-07 2001-02-07 Multiple beam interferometer
PCT/GB2002/000469 WO2002063237A2 (en) 2001-02-07 2002-02-04 Interferometer
AU2002228216A AU2002228216A1 (en) 2001-02-07 2002-02-04 Interferometer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0103065A GB2372097A (en) 2001-02-07 2001-02-07 Multiple beam interferometer

Publications (2)

Publication Number Publication Date
GB0103065D0 true GB0103065D0 (en) 2001-03-21
GB2372097A GB2372097A (en) 2002-08-14

Family

ID=9908313

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0103065A Withdrawn GB2372097A (en) 2001-02-07 2001-02-07 Multiple beam interferometer

Country Status (1)

Country Link
GB (1) GB2372097A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7477398B2 (en) * 2003-03-31 2009-01-13 Metrolaser, Inc. Multi-beam heterodyne laser doppler vibrometer
US6972846B2 (en) 2003-03-31 2005-12-06 Metrolaser, Inc. Multi-beam heterodyne laser doppler vibrometer

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2146116B (en) * 1983-05-13 1986-09-17 Citizen Watch Co Ltd Surface condition measurement apparatus
FR2664048B1 (en) * 1990-06-29 1993-08-20 Centre Nat Rech Scient MULTICHANNEL ANALOGUE DETECTION METHOD AND DEVICE.
US5220406A (en) * 1991-09-27 1993-06-15 Hughes Danbury Optical Systems, Inc. Sample point interferometer having separate rigid body and figure measurement channels
US5218423A (en) * 1991-09-27 1993-06-08 Hughes Aircraft Company Method and apparatus for generating a plurality of radiation beams from incident radiation in a multiple wavelength interferometer
EP0561015A1 (en) * 1992-03-17 1993-09-22 International Business Machines Corporation Interferometric phase-measuring
US5469259A (en) * 1994-01-03 1995-11-21 International Business Machines Corporation Inspection interferometer with scanning autofocus, and phase angle control features
US5467191A (en) * 1994-05-20 1995-11-14 Hughes Aircraft Company Sample point interferometer for measuring changes in figure of a primary mirror and primary-secondary mirror spacing
US5870192A (en) * 1998-05-08 1999-02-09 Barker; Lynn M. Multibeam visar using image coupling from one optical fiber bundle to another through the visar interferometer

Also Published As

Publication number Publication date
GB2372097A (en) 2002-08-14

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)