FR2755240B1 - Procede pour determiner la qualite d'une feuille de verre plat - Google Patents

Procede pour determiner la qualite d'une feuille de verre plat

Info

Publication number
FR2755240B1
FR2755240B1 FR9713414A FR9713414A FR2755240B1 FR 2755240 B1 FR2755240 B1 FR 2755240B1 FR 9713414 A FR9713414 A FR 9713414A FR 9713414 A FR9713414 A FR 9713414A FR 2755240 B1 FR2755240 B1 FR 2755240B1
Authority
FR
France
Prior art keywords
quality
determining
glass sheet
flat glass
flat
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 - Fee Related
Application number
FR9713414A
Other languages
English (en)
Other versions
FR2755240A1 (fr
Inventor
James William Haywood
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.)
Ford Motor Co
Original Assignee
Ford Motor Co
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 Ford Motor Co filed Critical Ford Motor Co
Publication of FR2755240A1 publication Critical patent/FR2755240A1/fr
Application granted granted Critical
Publication of FR2755240B1 publication Critical patent/FR2755240B1/fr
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • G01B11/30—Measuring arrangements characterised by the use of optical techniques for measuring roughness or irregularity of surfaces
    • G01B11/306—Measuring arrangements characterised by the use of optical techniques for measuring roughness or irregularity of surfaces for measuring evenness
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Textile Engineering (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
  • Length Measuring Devices By Optical Means (AREA)
FR9713414A 1996-10-28 1997-10-22 Procede pour determiner la qualite d'une feuille de verre plat Expired - Fee Related FR2755240B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/738,557 US5724140A (en) 1996-10-28 1996-10-28 Method and apparatus for determining the quality of flat glass sheet

Publications (2)

Publication Number Publication Date
FR2755240A1 FR2755240A1 (fr) 1998-04-30
FR2755240B1 true FR2755240B1 (fr) 2000-06-02

Family

ID=24968497

Family Applications (1)

Application Number Title Priority Date Filing Date
FR9713414A Expired - Fee Related FR2755240B1 (fr) 1996-10-28 1997-10-22 Procede pour determiner la qualite d'une feuille de verre plat

Country Status (2)

Country Link
US (1) US5724140A (fr)
FR (1) FR2755240B1 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
FR2780533B1 (fr) * 1998-06-26 2000-09-29 Bsn Sa Procede et dispositif de lecture de reliefs portes par un recipient transparent ou translucide
WO2002018980A2 (fr) * 2000-09-01 2002-03-07 Applied Process Technologies Systeme optique permettant de visualiser les distorsions dans des feuilles reflechissantes en mouvement
US6781684B1 (en) 2000-11-07 2004-08-24 Donald L. Ekhoff Workpiece levitation using alternating positive and negative pressure flows
US7899236B2 (en) * 2006-11-09 2011-03-01 The Boeing Company Evaluation of optical distortion in a transparency
WO2008149712A1 (fr) * 2007-06-01 2008-12-11 University Of Miyazaki Appareil et procédé permettant d'inspecter une déformation
US20130250288A1 (en) * 2012-03-22 2013-09-26 Shenzhen China Star Optoelectronics Technology Co., Ltd. Glass substrate inspection device and inspection method thereof
DE102014016679A1 (de) 2014-11-12 2016-05-12 Cl Schutzrechtsverwaltungs Gmbh Verfahren und Vorrichtung zur Belichtungssteuerung einer selektiven Lasersinter- oder Laserschmelzvorrichtung
US10180248B2 (en) 2015-09-02 2019-01-15 ProPhotonix Limited LED lamp with sensing capabilities
US11752558B2 (en) 2021-04-16 2023-09-12 General Electric Company Detecting optical anomalies on optical elements used in an additive manufacturing machine

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CS241114B2 (en) * 1981-07-29 1986-03-13 Feldmuehle Ag Method of materials' transparent bands quality testing and device for its performance
DE3816392A1 (de) * 1988-05-13 1989-11-23 Ver Glaswerke Gmbh Verfahren zur bestimmung der optischen qualitaet von flachglas oder flachglasprodukten
DE3938113C2 (de) * 1989-11-16 1994-11-03 Focus Mestechnik Gmbh & Co Kg Optisches Dickenmeßgerät für transparente Werkstücke
FR2668599B1 (fr) * 1990-10-31 1992-12-31 Saint Gobain Vitrage Int Procede et dispositif de mesure de la qualite optique d'un vitrage.
DE4035168A1 (de) * 1990-11-06 1992-05-07 Flachglas Ag Verfahren und vorrichtung zur bestimmung der optischen qualitaet einer transparenten platte
US5251010A (en) * 1991-06-07 1993-10-05 Glasstech, Inc. Optical roller wave gauge
JPH05249052A (ja) * 1992-03-06 1993-09-28 Nippon Sheet Glass Co Ltd 透光板材の欠点検出装置
US5471307A (en) * 1992-09-21 1995-11-28 Phase Shift Technology, Inc. Sheet flatness measurement system and method
JP3178644B2 (ja) * 1995-02-10 2001-06-25 セントラル硝子株式会社 透明板状体の欠点検出方法

Also Published As

Publication number Publication date
US5724140A (en) 1998-03-03
FR2755240A1 (fr) 1998-04-30

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Legal Events

Date Code Title Description
ST Notification of lapse