FR2755240B1 - Procede pour determiner la qualite d'une feuille de verre plat - Google Patents
Procede pour determiner la qualite d'une feuille de verre platInfo
- 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
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)
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)
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 |
AU2001288641A1 (en) * | 2000-09-01 | 2002-03-13 | Mark M. Abbott | Optical system for imaging distortions in moving reflective sheets |
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 |
US8553082B2 (en) * | 2007-06-01 | 2013-10-08 | University Of Miyazaki | Distortion inspecting apparatus and distortion inspecting method |
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)
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 |
-
1996
- 1996-10-28 US US08/738,557 patent/US5724140A/en not_active Expired - Fee Related
-
1997
- 1997-10-22 FR FR9713414A patent/FR2755240B1/fr not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
FR2755240A1 (fr) | 1998-04-30 |
US5724140A (en) | 1998-03-03 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |