ES2014888A6 - Apparatus and method for inspecting glass sheets. - Google Patents

Apparatus and method for inspecting glass sheets.

Info

Publication number
ES2014888A6
ES2014888A6 ES8902939A ES8902939A ES2014888A6 ES 2014888 A6 ES2014888 A6 ES 2014888A6 ES 8902939 A ES8902939 A ES 8902939A ES 8902939 A ES8902939 A ES 8902939A ES 2014888 A6 ES2014888 A6 ES 2014888A6
Authority
ES
Spain
Prior art keywords
sheets
glass sheets
image
nested
gap detector
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 - Lifetime
Application number
ES8902939A
Other languages
Spanish (es)
Inventor
Walter D Mccomb
Andrew W Rudolph
Barbara L Angell
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.)
Pilkington North America Inc
Original Assignee
Libbey Owens Ford 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 Libbey Owens Ford Co filed Critical Libbey Owens Ford Co
Publication of ES2014888A6 publication Critical patent/ES2014888A6/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • G01B11/24—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
    • G01B11/245—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures using a plurality of fixed, simultaneously operating transducers
    • 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
    • G01B11/303—Measuring arrangements characterised by the use of optical techniques for measuring roughness or irregularity of surfaces using photoelectric detection means

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
  • Length Measuring Devices By Optical Means (AREA)

Abstract

A pair of bent glass sheets (28, 29) are supported along a peripheral edge portion (26) in a nesting fixture (20) below a gap detector (21) for detecting ''good'' and ''bad'' nested pairs of glass sheets. The gap detector includes a laser beam source (34) for directing a light beam (35) at an outer surface of the nested sheets in a line generally perpendicular to a longitudinal axis of the sheets. A reflected beam (39) from the surface of the sheets is sensed by a row of cameras (43) which generate an image of the contours of the sheets. The image is compared with predetermined limits to detect unacceptable gaps between the sheets or unacceptable contour deviations.
ES8902939A 1988-08-26 1989-08-25 Apparatus and method for inspecting glass sheets. Expired - Lifetime ES2014888A6 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US23721688A 1988-08-26 1988-08-26

Publications (1)

Publication Number Publication Date
ES2014888A6 true ES2014888A6 (en) 1990-07-16

Family

ID=22892813

Family Applications (1)

Application Number Title Priority Date Filing Date
ES8902939A Expired - Lifetime ES2014888A6 (en) 1988-08-26 1989-08-25 Apparatus and method for inspecting glass sheets.

Country Status (9)

Country Link
EP (1) EP0388454A4 (en)
JP (1) JPH03501058A (en)
KR (1) KR900702325A (en)
AU (1) AU607868B2 (en)
BR (1) BR8907064A (en)
ES (1) ES2014888A6 (en)
FI (1) FI902098A0 (en)
WO (1) WO1990002310A1 (en)
ZA (1) ZA896509B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5568258A (en) * 1992-08-25 1996-10-22 Asahi Glass Company Ltd. Method and device for measuring distortion of a transmitting beam or a surface shape of a three-dimensional object
US6661506B2 (en) * 2000-08-24 2003-12-09 Og Technologies, Inc. Engine bearing inspection system
FR2846096B1 (en) * 2002-10-16 2005-02-11 DEVICE FOR DETECTING, ANALYZING AND LOCATING DEFECTS PRESENTED ON TRANSPARENT AND / OR REFLECTIVE SURFACE
FI118273B (en) * 2004-07-14 2007-09-14 Tamglass Ltd Oy Method for measuring the bending resistance of the glass sheet
US20080118159A1 (en) * 2006-11-21 2008-05-22 Robert Wendell Sharps Gauge to measure distortion in glass sheet
CN108195848A (en) * 2018-01-16 2018-06-22 深圳精创视觉科技有限公司 The full-scale warpage flatness detecting device of glass and detection method

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3736065A (en) * 1972-05-09 1973-05-29 Philco Ford Corp Radiation sensitive means for detecting optical flaws in glass
US4158507A (en) * 1977-07-27 1979-06-19 Recognition Equipment Incorporated Laser measuring system for inspection
US4255055A (en) * 1979-05-11 1981-03-10 Libbey-Owens-Ford Company Surface inspection system for detecting flatness of planar sheet materials
JPS5852504A (en) * 1981-09-24 1983-03-28 Nippon Sheet Glass Co Ltd Perspective distortion inspecting method of transparent plate
US4585343A (en) * 1983-11-04 1986-04-29 Libbey-Owens-Ford Company Apparatus and method for inspecting glass
DE3672163D1 (en) * 1986-02-22 1990-07-26 Pinsch Gmbh & Co Helmut K WOOD CHECKER.
US4837449A (en) * 1988-05-16 1989-06-06 Maltby Jr Robert E Inspecting for matching of paired sheets of transparent material

Also Published As

Publication number Publication date
WO1990002310A1 (en) 1990-03-08
KR900702325A (en) 1990-12-06
EP0388454A4 (en) 1993-05-12
EP0388454A1 (en) 1990-09-26
AU607868B2 (en) 1991-03-14
ZA896509B (en) 1990-05-30
FI902098A0 (en) 1990-04-26
BR8907064A (en) 1991-01-02
AU4207789A (en) 1990-03-23
JPH03501058A (en) 1991-03-07

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Legal Events

Date Code Title Description
SA6 Expiration date (snapshot 920101)

Free format text: 2009-08-25

FD1A Patent lapsed

Effective date: 20010201