GB1432425A - Analysing oscillations - Google Patents

Analysing oscillations

Info

Publication number
GB1432425A
GB1432425A GB2344273A GB2344273A GB1432425A GB 1432425 A GB1432425 A GB 1432425A GB 2344273 A GB2344273 A GB 2344273A GB 2344273 A GB2344273 A GB 2344273A GB 1432425 A GB1432425 A GB 1432425A
Authority
GB
United Kingdom
Prior art keywords
fournier
record
filter
analysing
oscillations
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.)
Expired
Application number
GB2344273A
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.)
BBC BROWN BOVERI and CIE
BBC Brown Boveri AG Switzerland
Original Assignee
BBC BROWN BOVERI and CIE
BBC Brown Boveri AG Switzerland
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 BBC BROWN BOVERI and CIE, BBC Brown Boveri AG Switzerland filed Critical BBC BROWN BOVERI and CIE
Publication of GB1432425A publication Critical patent/GB1432425A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/48—Laser speckle optics
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

1432425 Analyzing oscillating motion BBC BROWN BOVERI & CO Ltd 16 May 1973 [18 May 1972] 23442/73 Heading G2J An interference pattern being a record of coherent light diffusely reflected off an oscillating object, is analyzed by generating the Fournier spectrum of the record and disposing a spacial filter in the Fournier plane (the filter being a slit extending symmetrically to the optical axis of the system). By rotating the slit and observation of the changing image antinodes and nodes can be distinguished.
GB2344273A 1972-05-18 1973-05-16 Analysing oscillations Expired GB1432425A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH730072A CH545486A (en) 1972-05-18 1972-05-18 Device for the analysis of the intensity-recorded interference pattern of a vibrating object illuminated with coherent light

Publications (1)

Publication Number Publication Date
GB1432425A true GB1432425A (en) 1976-04-14

Family

ID=4322969

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2344273A Expired GB1432425A (en) 1972-05-18 1973-05-16 Analysing oscillations

Country Status (5)

Country Link
AT (1) AT321002B (en)
CH (1) CH545486A (en)
DE (1) DE2228082C3 (en)
FR (1) FR2327564A3 (en)
GB (1) GB1432425A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006030399B3 (en) * 2006-06-29 2007-12-27 Eads Deutschland Gmbh Two-dimensional Fabry Perot interferogram`s circular radius detecting method for detecting gusts, involves selecting transformation such that intensity extrema existing in intensity distribution appears equidistant in intensity vector

Also Published As

Publication number Publication date
DE2228082C3 (en) 1981-04-09
DE2228082A1 (en) 1973-12-06
AT321002B (en) 1975-05-10
CH545486A (en) 1973-12-15
FR2327564B3 (en) 1978-06-30
DE2228082B2 (en) 1980-07-24
FR2327564A3 (en) 1977-05-06

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee