CA958792A - Detection of blemishes on surfaces - Google Patents

Detection of blemishes on surfaces

Info

Publication number
CA958792A
CA958792A CA134,494A CA134494A CA958792A CA 958792 A CA958792 A CA 958792A CA 134494 A CA134494 A CA 134494A CA 958792 A CA958792 A CA 958792A
Authority
CA
Canada
Prior art keywords
blemishes
detection
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
CA134,494A
Other versions
CA134494S (en
Inventor
Graham M. Clarke
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.)
Ferranti International PLC
Original Assignee
Ferranti PLC
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 Ferranti PLC filed Critical Ferranti PLC
Application granted granted Critical
Publication of CA958792A publication Critical patent/CA958792A/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
CA134,494A 1971-02-26 1972-02-11 Detection of blemishes on surfaces Expired CA958792A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB552871A GB1376135A (en) 1971-02-26 1971-02-26 Detection of blemishes in surfaces

Publications (1)

Publication Number Publication Date
CA958792A true CA958792A (en) 1974-12-03

Family

ID=9797904

Family Applications (1)

Application Number Title Priority Date Filing Date
CA134,494A Expired CA958792A (en) 1971-02-26 1972-02-11 Detection of blemishes on surfaces

Country Status (5)

Country Link
CA (1) CA958792A (en)
DE (1) DE2206126A1 (en)
FR (1) FR2127699A5 (en)
GB (1) GB1376135A (en)
IT (1) IT948549B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1436124A (en) * 1972-07-29 1976-05-19 Ferranti Ltd Detection of blemishes in surfaces
SE7502440L (en) * 1974-03-09 1975-09-10 Feldmuehle Anlagen Prod
US4207001A (en) * 1976-05-24 1980-06-10 The University Of Queensland Particle size analyzer
CN107345918B (en) * 2017-08-16 2023-05-23 广西大学 Plate material quality detection device and method

Also Published As

Publication number Publication date
DE2206126A1 (en) 1972-09-07
FR2127699A5 (en) 1972-10-13
GB1376135A (en) 1974-12-04
IT948549B (en) 1973-06-11

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