Patent ID: 8306761

Claim:
An apparatus for identifying the position of defects ( 100 ) in bodies ( 2 ), in particular in wooden bodies such as logs or planks, comprising: an emitter ( 5 ) which can be placed so that it faces a body ( 2 ) for directing a plurality of beams ( 6 ′, 6 ″, 6 ′″) of electromagnetic radiation towards the body ( 2 ), each of the beams ( 6 ′, 6 ″, 6 ′″) lying in a respective lying plane (P 1 , P 2 , P 3 ); a plurality of sensors ( 8 ′, 8 ″, 8 ′″) each of which is facing the emitter ( 5 ) for receiving one of the beams ( 6 ′, 6 ″, 6 ′″) after the beam ( 6 ′, 6 ″, 6 ′″) has passed through the body ( 2 ); the sensors ( 8 ′, 8 ″, 8 ′″) and the emitter ( 5 ) between them delimiting a space (S) in which the body ( 2 ) is positioned; feed means ( 3 ) for moving the body ( 3 ) along a direction of feed (A) through the space (S); the apparatus being characterised in that the planes (P 1 , P 2 , P 3 ) in which the beams ( 6 ′, 6 ″, 6 ′″) lie are set at different angles to each other and are orientated transversally to the direction of feed (A), the lying planes (P 1 , P 2 , P 3 ) being positioned one after another along the direction of feed (A) so that the same portion of the body ( 2 ) can be struck by successive beams ( 6 ′, 6 ″, 6 ′″) as the body ( 2 ) is fed forward.