FR2377608A1 - Procede et appareil pour la mesure de standards de longueur - Google Patents

Procede et appareil pour la mesure de standards de longueur

Info

Publication number
FR2377608A1
FR2377608A1 FR7701160A FR7701160A FR2377608A1 FR 2377608 A1 FR2377608 A1 FR 2377608A1 FR 7701160 A FR7701160 A FR 7701160A FR 7701160 A FR7701160 A FR 7701160A FR 2377608 A1 FR2377608 A1 FR 2377608A1
Authority
FR
France
Prior art keywords
length
standard
laser beam
measuring length
length standards
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.)
Granted
Application number
FR7701160A
Other languages
English (en)
Other versions
FR2377608B1 (fr
Inventor
Patrick Meyrueis
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.)
Bpifrance Financement SA
Original Assignee
Agence National de Valorisation de la Recherche ANVAR
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 Agence National de Valorisation de la Recherche ANVAR filed Critical Agence National de Valorisation de la Recherche ANVAR
Priority to FR7701160A priority Critical patent/FR2377608A1/fr
Priority to US05/839,903 priority patent/US4197010A/en
Publication of FR2377608A1 publication Critical patent/FR2377608A1/fr
Application granted granted Critical
Publication of FR2377608B1 publication Critical patent/FR2377608B1/fr
Granted 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
    • G01B9/021—Interferometers using holographic techniques

Landscapes

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

Abstract

La présente invention concerne un procédé et un appareil pour la mesure de standards de longueur. Ce procédé est caractérisé en ce que l'on forme préalablement un hologramme d'un étalon de longueur, on éclaire cet hologramme par un faisceau laser direct et par un faisceau laser réfléchi par une face frontale du standard de longueur à mesurer en appui, par son autre face frontale, sur une butée de référence, et, à partir de franges d'interférence obtenues au moyen du front d'onde réfléchi par le standard de longueur, éclairé par le faisceau laser, on détermine la différence de longueur entre l'étalon et le standard.
FR7701160A 1977-01-17 1977-01-17 Procede et appareil pour la mesure de standards de longueur Granted FR2377608A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR7701160A FR2377608A1 (fr) 1977-01-17 1977-01-17 Procede et appareil pour la mesure de standards de longueur
US05/839,903 US4197010A (en) 1977-01-17 1977-10-06 Length standard comparison method and apparatus utilizing holographic interferrometry

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7701160A FR2377608A1 (fr) 1977-01-17 1977-01-17 Procede et appareil pour la mesure de standards de longueur

Publications (2)

Publication Number Publication Date
FR2377608A1 true FR2377608A1 (fr) 1978-08-11
FR2377608B1 FR2377608B1 (fr) 1982-04-02

Family

ID=9185545

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7701160A Granted FR2377608A1 (fr) 1977-01-17 1977-01-17 Procede et appareil pour la mesure de standards de longueur

Country Status (2)

Country Link
US (1) US4197010A (fr)
FR (1) FR2377608A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2557911B2 (ja) * 1987-10-30 1996-11-27 大阪精密機械 株式会社 被検面の形状誤差の光学的検出装置

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3592548A (en) * 1969-01-22 1971-07-13 Gen Motors Corp Holographic method of dimensional inspection
US3721498A (en) * 1969-06-16 1973-03-20 Kollsman Instr Corp Synthesized hologram for an artifical optical template
US3938889A (en) * 1974-06-04 1976-02-17 The United States Of America As Represented By The Secretary Of The Air Force Method and apparatus for measuring linear thermal expansion of polymeric material

Also Published As

Publication number Publication date
US4197010A (en) 1980-04-08
FR2377608B1 (fr) 1982-04-02

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Legal Events

Date Code Title Description
TP Transmission of property
ST Notification of lapse