FR2356909A1 - Appts. for measuring thickness of film - using black body IR radiator with film displaced across cavity aperture - Google Patents

Appts. for measuring thickness of film - using black body IR radiator with film displaced across cavity aperture

Info

Publication number
FR2356909A1
FR2356909A1 FR7619933A FR7619933A FR2356909A1 FR 2356909 A1 FR2356909 A1 FR 2356909A1 FR 7619933 A FR7619933 A FR 7619933A FR 7619933 A FR7619933 A FR 7619933A FR 2356909 A1 FR2356909 A1 FR 2356909A1
Authority
FR
France
Prior art keywords
film
appts
aperture
displaced
radiator
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
FR7619933A
Other languages
French (fr)
Other versions
FR2356909B1 (en
Inventor
Arthur E Goldberg
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.)
IRGON Inc
Original Assignee
IRGON Inc
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 IRGON Inc filed Critical IRGON Inc
Priority to FR7619933A priority Critical patent/FR2356909A1/en
Publication of FR2356909A1 publication Critical patent/FR2356909A1/en
Application granted granted Critical
Publication of FR2356909B1 publication Critical patent/FR2356909B1/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
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
    • G01B11/06—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness for measuring thickness ; e.g. of sheet material
    • G01B11/0616—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness for measuring thickness ; e.g. of sheet material of coating
    • G01B11/0625—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness for measuring thickness ; e.g. of sheet material of coating with measurement of absorption or reflection

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Testing Or Measuring Of Semiconductors Or The Like (AREA)
  • Length Measuring Devices By Optical Means (AREA)

Abstract

The appts. for measuring the thickness of a film on a support comprises a black-body infrared radiator (17) having an isothermal cavity with an aperture which the film (1) to be examined may be passed. An observation hole (18) is positioned so that part of the region covered by the aperture may be scanned through the hole and a pyrometer (8) scans a restricted region through this observation hole (18). The minimum distance between the perimeter of the aperture opposite which the film is displaced and the part of the region mentioned above is equal to several times the maximum dimension of the restricted region scanned by the pyrometer. The infrared radiation emitted has a major wavelength content around 3,4 mu m.
FR7619933A 1976-06-30 1976-06-30 Appts. for measuring thickness of film - using black body IR radiator with film displaced across cavity aperture Granted FR2356909A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7619933A FR2356909A1 (en) 1976-06-30 1976-06-30 Appts. for measuring thickness of film - using black body IR radiator with film displaced across cavity aperture

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7619933A FR2356909A1 (en) 1976-06-30 1976-06-30 Appts. for measuring thickness of film - using black body IR radiator with film displaced across cavity aperture

Publications (2)

Publication Number Publication Date
FR2356909A1 true FR2356909A1 (en) 1978-01-27
FR2356909B1 FR2356909B1 (en) 1982-03-05

Family

ID=9175054

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7619933A Granted FR2356909A1 (en) 1976-06-30 1976-06-30 Appts. for measuring thickness of film - using black body IR radiator with film displaced across cavity aperture

Country Status (1)

Country Link
FR (1) FR2356909A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2596509A1 (en) * 1986-04-01 1987-10-02 Chugai Ro Kogyo Kaisha Ltd APPARATUS FOR MEASURING THE THICKNESS OF A LAYER ON A SURFACE, A PAINT LAYER FOR EXAMPLE

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2596509A1 (en) * 1986-04-01 1987-10-02 Chugai Ro Kogyo Kaisha Ltd APPARATUS FOR MEASURING THE THICKNESS OF A LAYER ON A SURFACE, A PAINT LAYER FOR EXAMPLE

Also Published As

Publication number Publication date
FR2356909B1 (en) 1982-03-05

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Legal Events

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