GB2117897B - Detecting surface defects - Google Patents

Detecting surface defects

Info

Publication number
GB2117897B
GB2117897B GB08305847A GB8305847A GB2117897B GB 2117897 B GB2117897 B GB 2117897B GB 08305847 A GB08305847 A GB 08305847A GB 8305847 A GB8305847 A GB 8305847A GB 2117897 B GB2117897 B GB 2117897B
Authority
GB
United Kingdom
Prior art keywords
surface defects
detecting surface
detecting
defects
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
GB08305847A
Other versions
GB8305847D0 (en
GB2117897A (en
Inventor
Robert Noel West
Geoffrey Bernard Dunn
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.)
Sira Ltd
Original Assignee
Sira Ltd
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 Sira Ltd filed Critical Sira Ltd
Priority to GB08305847A priority Critical patent/GB2117897B/en
Publication of GB8305847D0 publication Critical patent/GB8305847D0/en
Publication of GB2117897A publication Critical patent/GB2117897A/en
Application granted granted Critical
Publication of GB2117897B publication Critical patent/GB2117897B/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
    • 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
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/47—Scattering, i.e. diffuse reflection
GB08305847A 1982-03-03 1983-03-03 Detecting surface defects Expired GB2117897B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08305847A GB2117897B (en) 1982-03-03 1983-03-03 Detecting surface defects

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8206279 1982-03-03
GB08305847A GB2117897B (en) 1982-03-03 1983-03-03 Detecting surface defects

Publications (3)

Publication Number Publication Date
GB8305847D0 GB8305847D0 (en) 1983-04-07
GB2117897A GB2117897A (en) 1983-10-19
GB2117897B true GB2117897B (en) 1986-04-16

Family

ID=26282161

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08305847A Expired GB2117897B (en) 1982-03-03 1983-03-03 Detecting surface defects

Country Status (1)

Country Link
GB (1) GB2117897B (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4920385A (en) * 1984-02-14 1990-04-24 Diffracto Ltd. Panel surface flaw inspection
US4629319A (en) * 1984-02-14 1986-12-16 Diffracto Ltd. Panel surface flaw inspection
US5206700A (en) * 1985-03-14 1993-04-27 Diffracto, Ltd. Methods and apparatus for retroreflective surface inspection and distortion measurement
GB8610304D0 (en) * 1986-04-28 1986-06-04 Sira Ltd Optical apparatus
GB2193803A (en) * 1986-07-04 1988-02-17 De La Rue Syst Monitoring diffuse reflectivity
US5168322A (en) * 1991-08-19 1992-12-01 Diffracto Ltd. Surface inspection using retro-reflective light field
US5216485A (en) * 1991-09-04 1993-06-01 International Business Machines Corporation Advanced via inspection tool (avit)
US5220617A (en) * 1991-09-04 1993-06-15 International Business Machines Corporation Method and apparatus for object inspection
US5225890A (en) * 1991-10-28 1993-07-06 Gencorp Inc. Surface inspection apparatus and method
GB2339614B (en) 1998-07-14 2000-06-21 Infrared Integrated Syst Ltd Detector-array sensor with mask warning
CN104568949B (en) * 2014-12-23 2018-02-23 宁波亚洲浆纸业有限公司 A kind of quantitative detecting method and its device of the quick-fried black degree of cardboard

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB894570A (en) * 1959-07-15 1962-04-26 British Iron Steel Research Improvements in or relating to the detection of surface abnormalities
DE1573496A1 (en) * 1965-11-20 1970-04-16 Feldmuehle Ag Device for testing and sorting of web or sheet products
US3478218A (en) * 1965-12-15 1969-11-11 Itt Apparatus and method for detecting flaws in articles of glass and the like
DE2532603C3 (en) * 1975-07-21 1978-12-14 Erwin Sick Gmbh Optik-Elektronik, 7808 Waldkirch Optical device for determining the light exit angle
DE2727927C3 (en) * 1977-06-21 1980-01-24 Erwin Sick Gmbh Optik-Elektronik, 7808 Waldkirch Device for the separate detection of light beams
GB2018985B (en) * 1978-02-13 1983-01-06 Sira Institute Detecting flaws in sheets
GB1596295A (en) * 1978-04-28 1981-08-26 Sira Institute Optical apparatus and method
IT1108254B (en) * 1978-10-24 1985-12-02 Fiat Spa PROCEDURE AND DEVICE FOR THE LEVELING OF SURFACE DEFECTS OF A PIECE WHICH HAS BEEN SUBJECTED TO A MECHANICAL PROCESSING
DE3006072C2 (en) * 1980-02-19 1984-11-29 Erwin Sick Gmbh Optik-Elektronik, 7808 Waldkirch Defect detection device for material webs

Also Published As

Publication number Publication date
GB8305847D0 (en) 1983-04-07
GB2117897A (en) 1983-10-19

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Legal Events

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

Effective date: 19970303