Detection device for identifying objects in a material stream
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United States of America Patent
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Dec 29, 2009
Issued Date -
N/A
app pub date -
May 4, 2005
filing date -
Jun 29, 2004
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention relates to a detection device for identifying objects in a material stream, preferably a cullet stream. The device comprises several light sources, which emit light in a rectilinear manner, preferably diode light sources and which are combined to form at least one optical emitter, at least one receiver that contains a lens system and a photoelectric cell, in addition to a detection section, which is located between the emitter and the receiver and is traversed by the material stream. The aim of the invention is to provide a detection device, which eliminates to a great extent the error sources that are inherent in optical lens systems. To achieve this, the light sources of an emitter are directed onto the area of intersection of the optical axis of the lens system with the lens system of the receiver that is assigned to the emitter.
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