| 摘要 |
Apparatus for sorting bodies according to the infrared radiation reflected from their surfaces includes feeding means 2 for forming the bodies 1 to be sorted into a substantial monolayer moving as a stream 3, a low shadow source 4 of infrared radiation adjacent one side of and extending as a surface across the stream, means 5 for scanning infrared radiation reflected from the bodies and for generating signals in response thereto, signal processing means receiving and converting the scan signals into decision signals, and means 8 for rejecting certain of the bodies in response to the decision signals. There may be a temperature control background target 10 on the opposite side of the stream from the source and shield means 11 defining an elongated window 12 through which the scan plane passes to target 10. There may be a hooded unit for generating and shielding a background target for use in the apparatus. A composite apparatus may have two sets of apparatus as above and with their scan paths coincident. <IMAGE> |
