Patent US4663855A successfully refreshed from Google Patents.
EP0452665A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Device and scanning method for measuring the thickness of opaque or transparent coatings of any type using a laser
Assignee: Electronic Systems SpA
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Filing: 1991-03-08
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Granted: —
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Expires: 2011-03-08
Abstract
Abstract The invention concerns a device for detecting the thickness of a coating layer in an opaque or transparent material which has been applied to any kind of surface, matt or shiny. The device includes two separate laser light sources which emit beams of light that are focused by a lens onto the same point of the surfaces to be measured. A CCD sensor reads the two beams of light, one of which is diffused and the other reflected, and produces a signal which after being decoded gives the thickness of the coating. The invention also concerns the method by which these beams of light are read.
Inventors
- 👤 Alessandro Masotti
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 23:03
CPC Classifications
G; G01; G01B; G01B11/00; G01B11/02; G01B11/06; G01B11/0616
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
76 words
Device for measuring the thickness of a coating that has been applied to a support, characterized by the fact that it has a pair of laser sources, one of a diffused light type and the other of a reflecting light type, and a single sensor which is capable of receiving light that has been diffused or reflected by the support and coating and which provides a signal on the basis of the thickness of the coating.
Claim 2
Dependent Claim
15 words
Device as per Claim 1, in which the sensor is a CCD type solid-state sensor.
Claim 3
Dependent Claim
79 words
Device for measuring the thickness of a coating that has been applied to a support, characterized by the fact that it has a laser light source and a CCD sensor which is capable of receiving the images that have been diffused and/or reflected by the surface of the support and that of the coating, and which provides a signal on the basis of the thickness of the coating and is fitted with the necessary equipment for decoding the signal.
Claim 4
Dependent Claim
46 words
Method for measuring the thickness of an opaque or transparent coating that has been applied to a surface, characterized by the fact that these surfaces are scanned by two separate laser beams, one of a reflected light type and the other of a diffused light type.
Claim 5
Dependent Claim
54 words
Method for measuring the thickness of a free transparent or semi-transparent film, characterized by the fact that the upper and lower surfaces of the film are scanned while the film is in motion by a reflecting type laser source, and that the images reflected from these surfaces are read by a CCD type sensor.
References Cited (Backward Citations)
No citation records indexed.
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