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GB2218199B - Method and apparatus for inspecting a smooth surface - Google Patents

Method and apparatus for inspecting a smooth surface

Info

Publication number
GB2218199B
GB2218199B GB8910493A GB8910493A GB2218199B GB 2218199 B GB2218199 B GB 2218199B GB 8910493 A GB8910493 A GB 8910493A GB 8910493 A GB8910493 A GB 8910493A GB 2218199 B GB2218199 B GB 2218199B
Authority
GB
United Kingdom
Prior art keywords
inspecting
smooth surface
smooth
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
Application number
GB8910493A
Other versions
GB2218199A (en
GB8910493D0 (en
Inventor
Leonard Norton-Wayne
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.)
LEICESTER POLYTECHNIC
Original Assignee
LEICESTER POLYTECHNIC
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 LEICESTER POLYTECHNIC filed Critical LEICESTER POLYTECHNIC
Publication of GB8910493D0 publication Critical patent/GB8910493D0/en
Publication of GB2218199A publication Critical patent/GB2218199A/en
Application granted granted Critical
Publication of GB2218199B publication Critical patent/GB2218199B/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
    • G01N21/9515—Objects of complex shape, e.g. examined with use of a surface follower device
    • 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
    • G01N21/8851—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges
    • G01N2021/8887—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges based on image processing techniques

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)
GB8910493A 1988-05-06 1989-05-08 Method and apparatus for inspecting a smooth surface Expired - Fee Related GB2218199B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB888810714A GB8810714D0 (en) 1988-05-06 1988-05-06 Method & apparatus for inspecting smooth surface

Publications (3)

Publication Number Publication Date
GB8910493D0 GB8910493D0 (en) 1989-06-21
GB2218199A GB2218199A (en) 1989-11-08
GB2218199B true GB2218199B (en) 1992-01-08

Family

ID=10636442

Family Applications (2)

Application Number Title Priority Date Filing Date
GB888810714A Pending GB8810714D0 (en) 1988-05-06 1988-05-06 Method & apparatus for inspecting smooth surface
GB8910493A Expired - Fee Related GB2218199B (en) 1988-05-06 1989-05-08 Method and apparatus for inspecting a smooth surface

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB888810714A Pending GB8810714D0 (en) 1988-05-06 1988-05-06 Method & apparatus for inspecting smooth surface

Country Status (1)

Country Link
GB (2) GB8810714D0 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE470029B (en) * 1992-03-19 1993-10-25 Sandvik Ab Optical device for checking the smoothness and flatness of a surface

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB980602A (en) * 1962-08-30 1965-01-13 G K N Steel Company Ltd A new or improved method of and apparatus for measuring discontinuities in steel andother metals
GB1072551A (en) * 1963-05-21 1967-06-21 Pilkington Brothers Ltd Improvements in or relating to the manufacture of flat material
GB1156920A (en) * 1966-03-21 1969-07-02 Mach Tool Industry Res Ass Method and apparatus for Determining Surface Quality
GB1268531A (en) * 1968-06-07 1972-03-29 Ct Nationale De Rech S Metallu Method of measuring surface roughness
GB1390938A (en) * 1971-05-06 1975-04-16 Image Analysing Coputers Ltd Analysis of fields containing optically distinguishable features
GB1400404A (en) * 1971-05-06 1975-07-16 Image Analysing Computers Ltd Feature association in image analysis
GB1518093A (en) * 1974-10-04 1978-07-19 Mullard Ltd Mark detection apparatus
GB1524239A (en) * 1976-12-10 1978-09-06 British Steel Corp Surface strain by reflectivity
GB1580196A (en) * 1976-05-27 1980-11-26 Ferranti Ltd Gloss measuring surface inspection systems
GB1602348A (en) * 1977-05-10 1981-11-11 Philips Nv Arrangement for examining objects
EP0131710A1 (en) * 1983-05-23 1985-01-23 Aluminum Company Of America Method of determining surface roughness using a visible and infrared laser source

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB980602A (en) * 1962-08-30 1965-01-13 G K N Steel Company Ltd A new or improved method of and apparatus for measuring discontinuities in steel andother metals
GB1072551A (en) * 1963-05-21 1967-06-21 Pilkington Brothers Ltd Improvements in or relating to the manufacture of flat material
GB1156920A (en) * 1966-03-21 1969-07-02 Mach Tool Industry Res Ass Method and apparatus for Determining Surface Quality
GB1268531A (en) * 1968-06-07 1972-03-29 Ct Nationale De Rech S Metallu Method of measuring surface roughness
GB1390938A (en) * 1971-05-06 1975-04-16 Image Analysing Coputers Ltd Analysis of fields containing optically distinguishable features
GB1400404A (en) * 1971-05-06 1975-07-16 Image Analysing Computers Ltd Feature association in image analysis
GB1518093A (en) * 1974-10-04 1978-07-19 Mullard Ltd Mark detection apparatus
GB1580196A (en) * 1976-05-27 1980-11-26 Ferranti Ltd Gloss measuring surface inspection systems
GB1524239A (en) * 1976-12-10 1978-09-06 British Steel Corp Surface strain by reflectivity
GB1602348A (en) * 1977-05-10 1981-11-11 Philips Nv Arrangement for examining objects
EP0131710A1 (en) * 1983-05-23 1985-01-23 Aluminum Company Of America Method of determining surface roughness using a visible and infrared laser source

Also Published As

Publication number Publication date
GB8810714D0 (en) 1988-06-08
GB2218199A (en) 1989-11-08
GB8910493D0 (en) 1989-06-21

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Legal Events

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

Effective date: 19960508