| 摘要 |
The invention relates to a device and a method for automatically inspecting objects traveling in an essentially mono-layer flow. Said device comprises a detection unit (4) through which the object flow (2) passes, consisting of the following: means (6) for applying electromagnetic radiation in the direction of the plane of conveyance of said objects (2) and defining a lighting plane, the intersection of the lighting plane and plane of conveyance defining a detection line; a receiver device (8) periodically scanning each point on said detection line and receiving radiation reflected by an elementary measuring zone, the plane defined by said detection line and the optical input center being known as the scanning plane; means (10) for transmitting said reflected radiation. The machine is characterized in that the radiation emitted is concentrated in the region of the lighting plane (Pc) and in that said lighting plane (Pe) and the scanning plane (Pb) merge, whereupon said joint plane (Pe, Pb) is inclined in relation to the normal (D) of the plane of conveyance (Pc).
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