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GB1207489A - A system for detecting surface flaws in objects - Google Patents

A system for detecting surface flaws in objects

Info

Publication number
GB1207489A
GB1207489A GB5464666A GB5464666A GB1207489A GB 1207489 A GB1207489 A GB 1207489A GB 5464666 A GB5464666 A GB 5464666A GB 5464666 A GB5464666 A GB 5464666A GB 1207489 A GB1207489 A GB 1207489A
Authority
GB
United Kingdom
Prior art keywords
cells
photo
level detectors
objects
light
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
GB5464666A
Inventor
David Blythe Foster
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.)
NORTH ATLANTIC RES PRODUCTS LT
Original Assignee
NORTH ATLANTIC RES PRODUCTS LT
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 NORTH ATLANTIC RES PRODUCTS LT filed Critical NORTH ATLANTIC RES PRODUCTS LT
Priority to GB5464666A priority Critical patent/GB1207489A/en
Publication of GB1207489A publication Critical patent/GB1207489A/en
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

Landscapes

  • 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)

Abstract

1,207,489. Photo-electric flow detection. NORTH ATLANTIC RESEARCH PRODUCTS Ltd. Nov.29, 1967 [Dec. 6, 1966], No.54646/66. Heading G1A. In a system for detecting flows in the surface of an object, a plurality of photo-cells 8 are arranged to monitor the light from a source 1, reflected by a plurality of zones on the object, and the output from the cells is fed to level detectors 10 to create a system output signal if the light falling on at least one cell falls below a predetermined level. The cells are located at the bottom of a compartmented matrix 7 the top of which is covered with diffusing material located in the plane of focus of a lens 5. The cells form potentiometers with resistors 9 to provide inputs to the level detectors which may be differential amplifiers or Schmitt triggers, and a fall in illumination produces a signal through "or" gate 11 to a memory 16 which is triggered, in the case of a moving object, by a photo-electric position device 13, 14, to operate a reject relay.
GB5464666A 1966-12-06 1966-12-06 A system for detecting surface flaws in objects Expired GB1207489A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB5464666A GB1207489A (en) 1966-12-06 1966-12-06 A system for detecting surface flaws in objects

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5464666A GB1207489A (en) 1966-12-06 1966-12-06 A system for detecting surface flaws in objects

Publications (1)

Publication Number Publication Date
GB1207489A true GB1207489A (en) 1970-10-07

Family

ID=10471670

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5464666A Expired GB1207489A (en) 1966-12-06 1966-12-06 A system for detecting surface flaws in objects

Country Status (1)

Country Link
GB (1) GB1207489A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4171158A (en) * 1975-08-14 1979-10-16 Tri/Valley Growers Inspection system and method
EP0016551A1 (en) * 1979-02-26 1980-10-01 Udaras Na Gaeltachta Apparatus for inspecting translucent articles for faults
EP0047612A1 (en) * 1980-09-04 1982-03-17 Imperial Chemical Industries Plc Apparatus for detecting flaws in internal coatings on moving open-mouth containers
GB2159271A (en) * 1984-04-27 1985-11-27 Nissan Motor Surface flaw detecting method and apparatus
DE3717274A1 (en) * 1987-05-22 1988-12-01 Sick Erwin Gmbh Optical defect inspecting device
EP0345786A2 (en) * 1988-06-08 1989-12-13 Dai Nippon Insatsu Kabushiki Kaisha System for detecting defective portions in data recording portions of optical recording medium
DE3926349A1 (en) * 1989-08-09 1991-02-14 Sick Optik Elektronik Erwin Optical defect inspection arrangement for flat transparent material - passes light via mirror forming image of illumination pupil on camera lens of photoreceiver
EP0992788A1 (en) * 1998-09-07 2000-04-12 Uwe Peter Dipl.-Ing. Braun Apparatus for the adjustment and control of the illumination level provided by the lamps of an inspection system

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4171158A (en) * 1975-08-14 1979-10-16 Tri/Valley Growers Inspection system and method
EP0016551A1 (en) * 1979-02-26 1980-10-01 Udaras Na Gaeltachta Apparatus for inspecting translucent articles for faults
DK154668B (en) * 1979-02-26 1988-12-05 Udaras Na Gaeltachta APPARATUS FOR DETECTION OF ERRORS IN TRANSPARENT MATERIAL
EP0047612A1 (en) * 1980-09-04 1982-03-17 Imperial Chemical Industries Plc Apparatus for detecting flaws in internal coatings on moving open-mouth containers
GB2159271A (en) * 1984-04-27 1985-11-27 Nissan Motor Surface flaw detecting method and apparatus
DE3717274A1 (en) * 1987-05-22 1988-12-01 Sick Erwin Gmbh Optical defect inspecting device
EP0345786A2 (en) * 1988-06-08 1989-12-13 Dai Nippon Insatsu Kabushiki Kaisha System for detecting defective portions in data recording portions of optical recording medium
EP0345786A3 (en) * 1988-06-08 1990-09-19 Dai Nippon Insatsu Kabushiki Kaisha System for detecting defective portions in data recording portions of optical recording medium
DE3926349A1 (en) * 1989-08-09 1991-02-14 Sick Optik Elektronik Erwin Optical defect inspection arrangement for flat transparent material - passes light via mirror forming image of illumination pupil on camera lens of photoreceiver
EP0992788A1 (en) * 1998-09-07 2000-04-12 Uwe Peter Dipl.-Ing. Braun Apparatus for the adjustment and control of the illumination level provided by the lamps of an inspection system

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee