GB1339348A - Device for studying small deviations between at least two objects - Google Patents

Device for studying small deviations between at least two objects

Info

Publication number
GB1339348A
GB1339348A GB2300271A GB2300271A GB1339348A GB 1339348 A GB1339348 A GB 1339348A GB 2300271 A GB2300271 A GB 2300271A GB 2300271 A GB2300271 A GB 2300271A GB 1339348 A GB1339348 A GB 1339348A
Authority
GB
United Kingdom
Prior art keywords
objects
focal length
actual object
time
lens
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
GB2300271A
Inventor
C Aplin
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.)
Alcatel Lucent SAS
Original Assignee
Compagnie Generale dElectricite SA
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
Priority claimed from FR7007771A external-priority patent/FR2082133A5/fr
Priority claimed from FR7023871A external-priority patent/FR2094628A6/fr
Application filed by Compagnie Generale dElectricite SA filed Critical Compagnie Generale dElectricite SA
Publication of GB1339348A publication Critical patent/GB1339348A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03H—HOLOGRAPHIC PROCESSES OR APPARATUS
    • G03H1/00—Holographic processes or apparatus using light, infrared or ultraviolet waves for obtaining holograms or for obtaining an image from them; Details peculiar thereto
    • 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
    • G01B9/021—Interferometers using holographic techniques

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Holo Graphy (AREA)
  • Length Measuring Devices By Optical Means (AREA)

Abstract

1339348 Measuring durations of 'objects' COMPAGNIE GENERALE D'ELECTRICITE 19 April 1971 [4 March 1970 26 June 1970] 23002/71 Heading G2J Two 'objects' are compared by superimposing wave surfaces from the two 'objects' to give an interference pattern which is formed into an image by a variable focal length lens and 'studied! The 'objects' include an actual object or one or both may be holograms of objects and the two 'objects' may be separated in time such that the comparison shows movements of a single actual object by comparing its present state with a hologram representing its state extant in time. The "study" may be visual, but, as described uses a computer to record data including the focal length of the lens to derive useful results. Formulae are given.
GB2300271A 1970-03-04 1971-04-19 Device for studying small deviations between at least two objects Expired GB1339348A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7007771A FR2082133A5 (en) 1970-03-04 1970-03-04
FR7023871A FR2094628A6 (en) 1970-06-26 1970-06-26

Publications (1)

Publication Number Publication Date
GB1339348A true GB1339348A (en) 1973-12-05

Family

ID=26215594

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2300271A Expired GB1339348A (en) 1970-03-04 1971-04-19 Device for studying small deviations between at least two objects

Country Status (7)

Country Link
BE (1) BE763122A (en)
CA (1) CA922561A (en)
CH (1) CH521567A (en)
DE (1) DE2110411A1 (en)
GB (1) GB1339348A (en)
NL (1) NL7102872A (en)
SE (1) SE374201B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2194353A (en) * 1986-08-04 1988-03-02 Hugle William Bell Holographic positional detection of objects
GB2201010A (en) * 1987-02-12 1988-08-17 Holtronic Technologies Ltd Holographic positional detection of objects

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2194353A (en) * 1986-08-04 1988-03-02 Hugle William Bell Holographic positional detection of objects
GB2194353B (en) * 1986-08-04 1990-02-21 Hugle William Bell The method of and apparatus for the holographic positional detection of objects
GB2201010A (en) * 1987-02-12 1988-08-17 Holtronic Technologies Ltd Holographic positional detection of objects

Also Published As

Publication number Publication date
BE763122A (en) 1971-08-18
CA922561A (en) 1973-03-13
SE374201B (en) 1975-02-24
DE2110411A1 (en) 1971-09-16
CH521567A (en) 1972-04-15
NL7102872A (en) 1971-09-07

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Legal Events

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