BE596651A - Detection of defects in sheet glass. - Google Patents

Detection of defects in sheet glass.

Info

Publication number
BE596651A
BE596651A BE596651A BE596651A BE596651A BE 596651 A BE596651 A BE 596651A BE 596651 A BE596651 A BE 596651A BE 596651 A BE596651 A BE 596651A BE 596651 A BE596651 A BE 596651A
Authority
BE
Belgium
Prior art keywords
defects
detection
sheet glass
glass
sheet
Prior art date
Application number
BE596651A
Other languages
French (fr)
Inventor
William Francis Galey
George Elwood Sleighter
Hugh Edward Shaw Jr
Joseph Steve Zabetakis
Original Assignee
Pittsburgh Plate Glass 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
Priority claimed from US850312A external-priority patent/US3199401A/en
Application filed by Pittsburgh Plate Glass Co filed Critical Pittsburgh Plate Glass Co
Publication of BE596651A publication Critical patent/BE596651A/en

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
    • G01N21/8901—Optical details; Scanning details
    • 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

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
BE596651A 1959-11-02 1960-10-31 Detection of defects in sheet glass. BE596651A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US85034759A 1959-11-02 1959-11-02
US85030459A 1959-11-02 1959-11-02
US850312A US3199401A (en) 1959-11-02 1959-11-02 Method and apparatus for optically detecting elongated defects in glass

Publications (1)

Publication Number Publication Date
BE596651A true BE596651A (en) 1961-05-02

Family

ID=27420350

Family Applications (1)

Application Number Title Priority Date Filing Date
BE596651A BE596651A (en) 1959-11-02 1960-10-31 Detection of defects in sheet glass.

Country Status (4)

Country Link
BE (1) BE596651A (en)
DE (2) DE1298736B (en)
GB (1) GB906947A (en)
NL (3) NL6603093A (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3688235A (en) * 1965-03-31 1972-08-29 Inst Nat Du Verre Apparatus for detecting the angular deflection imparted to a beam passing through a transparent sheet
US3815998A (en) * 1972-10-30 1974-06-11 Ibm Surface contrast system and method
US4097151A (en) * 1976-03-16 1978-06-27 Ppg Industries, Inc. Method of and apparatus for locating B type and point type defects in a glass ribbon
DE3800053A1 (en) * 1988-01-04 1989-07-13 Sick Optik Elektronik Erwin OPTICAL ERROR INSPECTION DEVICE
DE3806382A1 (en) * 1988-02-29 1989-09-07 Feldmuehle Ag Method and device for testing running transparent webs
CN111612020B (en) * 2019-02-22 2024-04-26 杭州海康威视数字技术股份有限公司 Positioning method for abnormal object to be detected, security inspection analysis equipment and security inspection analysis system
CN112683792B (en) * 2020-11-23 2023-08-29 光子(深圳)精密科技有限公司 Graphite flake appearance defect detection system
CN115355824B (en) * 2022-10-20 2023-01-17 长沙巨翊医疗科技有限公司 Light-transmitting tube image acquisition method, tube diameter measurement method and device

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2735017A (en) * 1956-02-14 beard ettal
US1874217A (en) * 1930-07-01 1932-08-30 Pittsburgh Plate Glass Co Glass inspection apparatus
US2393631A (en) * 1940-11-27 1946-01-29 Ilford Ltd Testing of photographic films, plates, and papers
DE748025C (en) * 1941-05-22 1944-10-25 Glastechnische Ges E V Deutsch Method for testing transparent or reflecting opaque bodies by numerical determination of the image distortions caused by them, in particular for testing flat glass
US2898801A (en) * 1955-06-09 1959-08-11 Robotron Corp Inspection device for detecting differences in two objects
US3199401A (en) * 1959-11-02 1965-08-10 Pittsburgh Plate Glass Co Method and apparatus for optically detecting elongated defects in glass

Also Published As

Publication number Publication date
DE1298306B (en) 1969-06-26
NL257509A (en)
GB906947A (en) 1962-09-26
DE1298736B (en) 1969-07-03
NL6603093A (en) 1966-06-27
NL6603092A (en) 1966-06-27

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