FR2591341B1 - Technique de detection de defauts optiques sur ligne de production de verre - Google Patents

Technique de detection de defauts optiques sur ligne de production de verre

Info

Publication number
FR2591341B1
FR2591341B1 FR8518260A FR8518260A FR2591341B1 FR 2591341 B1 FR2591341 B1 FR 2591341B1 FR 8518260 A FR8518260 A FR 8518260A FR 8518260 A FR8518260 A FR 8518260A FR 2591341 B1 FR2591341 B1 FR 2591341B1
Authority
FR
France
Prior art keywords
technique
production line
glass production
detecting optical
optical defects
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
FR8518260A
Other languages
English (en)
Other versions
FR2591341A1 (fr
Inventor
Henri Foirien
Alain Maillard
Philippe Vizet
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.)
Saint Gobain Vitrage SA
Original Assignee
Saint Gobain Vitrage 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
Application filed by Saint Gobain Vitrage SA filed Critical Saint Gobain Vitrage SA
Priority to FR8518260A priority Critical patent/FR2591341B1/fr
Publication of FR2591341A1 publication Critical patent/FR2591341A1/fr
Application granted granted Critical
Publication of FR2591341B1 publication Critical patent/FR2591341B1/fr
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/89—Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles
    • G01N21/892—Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles characterised by the flaw, defect or object feature examined
    • G01N21/896—Optical defects in or on transparent materials, e.g. distortion, surface flaws in conveyed flat sheet or rod
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2201/00—Features of devices classified in G01N21/00
    • G01N2201/10—Scanning
    • G01N2201/101—Scanning measuring head
FR8518260A 1985-12-10 1985-12-10 Technique de detection de defauts optiques sur ligne de production de verre Expired FR2591341B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR8518260A FR2591341B1 (fr) 1985-12-10 1985-12-10 Technique de detection de defauts optiques sur ligne de production de verre

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8518260A FR2591341B1 (fr) 1985-12-10 1985-12-10 Technique de detection de defauts optiques sur ligne de production de verre

Publications (2)

Publication Number Publication Date
FR2591341A1 FR2591341A1 (fr) 1987-06-12
FR2591341B1 true FR2591341B1 (fr) 1988-02-19

Family

ID=9325623

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8518260A Expired FR2591341B1 (fr) 1985-12-10 1985-12-10 Technique de detection de defauts optiques sur ligne de production de verre

Country Status (1)

Country Link
FR (1) FR2591341B1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3728210A1 (de) * 1987-08-24 1989-03-16 Sick Optik Elektronik Erwin Optische abtastvorrichtung fuer transparentes bahnmaterial
FR2681429B1 (fr) * 1991-09-13 1995-05-24 Thomson Csf Procede et dispositif d'inspection du verre.
US5880843A (en) * 1997-09-03 1999-03-09 Vitro Flotado, S.A. De C.V. Apparatus and method for determining the optical distortion of a transparent substrate
BR112012031749B1 (pt) * 2010-06-15 2020-02-18 AGC Inc. Dispositivo de medição de forma, método de medição de forma, e método de fabricação de placa de vidro

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3199401A (en) * 1959-11-02 1965-08-10 Pittsburgh Plate Glass Co Method and apparatus for optically detecting elongated defects in glass
BE789192A (fr) * 1971-09-24 1973-03-22 Saint Gobain Procede et dispositifs pour la mesure des defauts optiques d'uncorps
US3807870A (en) * 1972-05-22 1974-04-30 G Kalman Apparatus for measuring the distance between surfaces of transparent material
US3799679A (en) * 1972-06-27 1974-03-26 Ppg Industries Inc Glass distortion scanning system
US4223346A (en) * 1979-04-05 1980-09-16 Armco Inc. Automatic defect detecting inspection apparatus

Also Published As

Publication number Publication date
FR2591341A1 (fr) 1987-06-12

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Legal Events

Date Code Title Description
ST Notification of lapse