Patent ID: 8780360

Claim:
A method for identifying the orientation of wood fibres in a piece of wood, characterised in that it comprises the operating steps of: generating at least one beam of light ( 4 ), said light being polarised in a predetermined first polarisation plane (pS); projecting the beam of light ( 4 ) onto a surface of the piece of wood ( 3 ) to illuminate a zone of the surface and generate, from said zone, diffuse light without polarisation and reflected light ( 5 ) linearly polarised at least in a second polarisation plane (pX 2 ); detecting said reflected light ( 5 ), said detecting step including detecting the intensity of components of the reflected light ( 5 ) with respect to at least three separate reference polarisation planes (P 1 ), (P 2 ), (P 3 ); and identifying the orientation of the wood fibres ( 2 ) in said zone at least indirectly based on the orientation in space of the second polarisation plane (pX 2 ) of the reflected light ( 5 ).