WO2000066998A8 - Method and device for detecting an image of an essentially cylindrical surface - Google Patents

Method and device for detecting an image of an essentially cylindrical surface

Info

Publication number
WO2000066998A8
WO2000066998A8 PCT/AT2000/000104 AT0000104W WO0066998A8 WO 2000066998 A8 WO2000066998 A8 WO 2000066998A8 AT 0000104 W AT0000104 W AT 0000104W WO 0066998 A8 WO0066998 A8 WO 0066998A8
Authority
WO
WIPO (PCT)
Prior art keywords
image
cylindrical surface
detecting
essentially cylindrical
relation
Prior art date
Application number
PCT/AT2000/000104
Other languages
German (de)
French (fr)
Other versions
WO2000066998A2 (en
WO2000066998A3 (en
WO2000066998A9 (en
Inventor
Gerhard Kucera
Michael Rudolf
Hubert Keller
Franz Seiser
Original Assignee
Festo Ges M B H
Gerhard Kucera
Michael Rudolf
Hubert Keller
Franz Seiser
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 Festo Ges M B H, Gerhard Kucera, Michael Rudolf, Hubert Keller, Franz Seiser filed Critical Festo Ges M B H
Priority to AU39462/00A priority Critical patent/AU3946200A/en
Publication of WO2000066998A2 publication Critical patent/WO2000066998A2/en
Publication of WO2000066998A3 publication Critical patent/WO2000066998A3/en
Publication of WO2000066998A9 publication Critical patent/WO2000066998A9/en
Publication of WO2000066998A8 publication Critical patent/WO2000066998A8/en

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84Systems specially adapted for particular applications
    • G01N21/88Investigating the presence of flaws or contamination
    • G01N21/95Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
    • G01N21/954Inspecting the inner surface of hollow bodies, e.g. bores
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84Systems specially adapted for particular applications
    • G01N21/88Investigating the presence of flaws or contamination
    • G01N21/95Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
    • G01N21/952Inspecting the exterior surface of cylindrical bodies or wires

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)
  • Length Measuring Devices By Optical Means (AREA)

Abstract

The invention relates to a method for detecting an image of an essentially cylindrical surface (13) such as the surface of a hollow space or outer casing of an essentially cylindrical work piece. The inventive method comprises an image detecting unit (1) and an image evaluation unit (2). The image detecting unit (1) is provided with all-round optics (6) which detect light from the entire circumference of the cylindrical surface (13) and projects said light onto a sensor (8). The all-round optics (6) and the cylindrical surface (13) are moved in relation to each other. After a movement along a movement path which can be predetermined has taken place, the image evaluating unit (2) stores the partial image of the surface, whereby said image has just been detected by the sensor (8) and joins all partial images to form an entire image of the surface. The all-round optics (6) and the cylindrical surface (13) are continuously moved in relation to one another.
PCT/AT2000/000104 1999-04-30 2000-04-26 Method and device for detecting an image of an essentially cylindrical surface WO2000066998A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU39462/00A AU3946200A (en) 1999-04-30 2000-04-26 Method and device for detecting an image of an essentially cylindrical surface

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ATA779/99 1999-04-30
AT77999A AT408385B (en) 1999-04-30 1999-04-30 METHOD AND DEVICE FOR DETECTING AN IMAGE OF AN ESSENTIAL CYLINDRICAL SURFACE

Publications (4)

Publication Number Publication Date
WO2000066998A2 WO2000066998A2 (en) 2000-11-09
WO2000066998A3 WO2000066998A3 (en) 2001-04-12
WO2000066998A9 WO2000066998A9 (en) 2002-08-29
WO2000066998A8 true WO2000066998A8 (en) 2004-04-15

Family

ID=3499546

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AT2000/000104 WO2000066998A2 (en) 1999-04-30 2000-04-26 Method and device for detecting an image of an essentially cylindrical surface

Country Status (3)

Country Link
AT (1) AT408385B (en)
AU (1) AU3946200A (en)
WO (1) WO2000066998A2 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6950546B2 (en) * 2002-12-03 2005-09-27 Og Technologies, Inc. Apparatus and method for detecting surface defects on a workpiece such as a rolled/drawn metal bar
US7460703B2 (en) 2002-12-03 2008-12-02 Og Technologies, Inc. Apparatus and method for detecting surface defects on a workpiece such as a rolled/drawn metal bar
DE10358670A1 (en) * 2003-12-12 2005-07-07 Focke & Co.(Gmbh & Co. Kg) Method and device for testing the surface of a moving strand of material of the tobacco processing industry
DE102007031358B4 (en) 2007-07-05 2023-03-16 Jenoptik Industrial Metrology Germany Gmbh Apparatus for imaging the inner surface of a cylindrical cavity
US9759670B2 (en) 2014-12-23 2017-09-12 Mitutoyo Corporation Bore imaging system
US9880108B2 (en) 2014-12-23 2018-01-30 Mitutoyo Corporation Bore imaging system

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4072427A (en) * 1976-07-28 1978-02-07 Bell Telephone Laboratories, Incorporated Fault inspection system
US5004339A (en) * 1979-02-27 1991-04-02 Diffracto Ltd. Method and apparatus for determining physical characteristics of objects and object surfaces
JPH0679327B2 (en) * 1986-04-24 1994-10-05 日本たばこ産業株式会社 Cylindrical surface imager
DE3822303A1 (en) * 1987-12-10 1989-06-22 Birkle Gebhard DEVICE FOR OPTICALLY SCANNING THE SURFACE OF AN OBJECT WHOSE SURFACE IS REFLECTABLE OR SCATTERABLE AND METHOD FOR THEREFORE
JPH09196856A (en) * 1996-01-23 1997-07-31 Tsubakimoto Chain Co Surface inspecting method, and device and prism therefor
DE19806261B4 (en) * 1997-02-14 2006-05-11 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Method for the controlled representation of cavity surfaces
DE19713973C2 (en) * 1997-04-04 2000-09-14 Fraunhofer Ges Forschung Method and device for the optical inspection of the lateral surface of cylindrical bodies

Also Published As

Publication number Publication date
WO2000066998A2 (en) 2000-11-09
WO2000066998A3 (en) 2001-04-12
ATA77999A (en) 2001-03-15
AT408385B (en) 2001-11-26
WO2000066998A9 (en) 2002-08-29
AU3946200A (en) 2000-11-17

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