Apparatus and method for characterizing a surface structure

Details Apparatus and method for characterizing a surface structure Apparatus and method for characterizing a surface structure

G - Physics

01

N

G01N 21/86 (2006.01) G01B 11/30 (2006.01) G01N 21/55 (2006.01) G01N 21/89 (2006.01) G01N 33/34 (2006.01)

Patent

CA 2687059

An apparatus for optically characterising a surface structure of a board or sheet, includes a light source arranged at a first side of a said board and adapted to illuminate a first area of a surface of said board or sheet by emitting towards said surface a collimated light beam at a first, oblique angle of incidence relative to said surface of said board or sheet. A light receiver arranged at a second side of a said board or sheet, said second side being substantially opposite to said first side in respect of said board or sheet, is adapted to receive at least a part of said collimated light beam being reflected off said first area of said surface of said board or sheet, and includes a spatial detector adapted to receive by different parts of said detector light of said collimated light beam being reflected off respective, different parts of said first area.

L'invention concerne un appareil pour caractériser optiquement une structure de surface d'une planche ou d'une feuille, l'appareil comprenant une source de lumière disposée à un premier côté de ladite planche et conçue pour éclairer une première zone d'une surface de ladite planche ou feuille par l'émission vers ladite surface d'un faisceau lumineux collimaté à un premier angle d'incidence oblique par rapport à ladite surface de ladite planche ou feuille. Un récepteur de lumière disposé au niveau d'un second côté de ladite planche ou feuille, ledit second côté étant sensiblement opposé audit premier côté par rapport à ladite planche ou feuille, est conçu pour recevoir au moins une partie dudit faisceau lumineux collimaté qui est réfléchi par ladite première zone de ladite surface de ladite planche ou feuille, et comprend un détecteur spatial conçu pour recevoir par différentes parties dudit détecteur de la lumière dudit faisceau lumineux collimaté qui est réfléchi par différentes parties respectives de ladite première zone.

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