| 摘要 |
A device for point-form photoelectric scanning of a transparent object to be measured is disclosed and is provided with a transport arrangement for transporting an object to be measured. An illuminating arrangement exposes the object to measuring light in a line-shaped measuring line extending across the object transverse to the transport direction. A collector arrangement collects measuring light passed through the object in the area of the measuring line. A photoelectric converter arrangement, optically connected with the collector arrangement, converts measuring light passed through the object into corresponding electrical signals. The collector arrangement includes a multiplicity of light conductors, an optical multiplexer with multiple inputs corresponding in number to the multiplicity of the light conductors, and an output. An output end of each of the light conductors is connected with one of the inputs of the optical multiplexer and an input end of each light conductor is positioned along the measuring line to receive passed through measuring light from point form regions of the object to be measured. The optical multiplexer includes a rotatable optical commutator driven by a motor which sequentially and optically connects the inputs of the multiplexer with the output of the multiplexer. The illuminating arrangement includes a light source and a light guide body which has an input surface and an output surface and guides light from the light source to the object to be measured.
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