Television – Special applications – Flaw detector
Patent
1996-01-16
1998-03-03
Chin, Tommy P.
Television
Special applications
Flaw detector
348 92, 356237, H04N 718, H04N 947
Patent
active
057240930
ABSTRACT:
An apparatus for detecting surface defects particularly in rolled strips, the operation of the apparatus being based on the use of a telecamera with multiple sensitive elements which form parts of respective bright-field and dark-field recording channels. More precisely, the above-mentioned elements are sensitive to light radiations within respective ranges of wavelengths corresponding to those of the radiations emitted by the light sources. The latter are arranged in a manner such that, in one case, the radiation emitted thereby falls substantially tangential on the surface of the strip to be checked and, in the other case, such that the radiation reflected by the said surface is directed towards the telecamera. From a comparison of the images recorded by the recording channels, the comparison being effected by electronic circuit provided in the apparatus, it is possible to derive full information on the state of the surface under examination and hence to apply any necessary modifications to the production cycle.
REFERENCES:
patent: 4449818 (1984-05-01), Yamaguchi et al.
patent: 4538909 (1985-09-01), Bible et al.
patent: 5058178 (1991-10-01), Ray
patent: 5278012 (1994-01-01), Yamanaka et al.
patent: 5396334 (1995-03-01), Sugawara
patent: 5455870 (1995-10-01), Sepai et al.
patent: 5497234 (1996-03-01), Haga
Chin Tommy P.
Diep Nhon T.
Finmeccanica S.p.A. - Azienda Ansaldo
LandOfFree
Apparatus for the optical detection of surface defects, particul does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus for the optical detection of surface defects, particul, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for the optical detection of surface defects, particul will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2253030