Patents Assigned to Xeltron Internacional S.A.
  • Patent number: 5562214
    Abstract: An apparatus for optically sorting small objects such as beans has an annular analysis head with an opening through which the objects fall. Three sets of optical fibers are positioned around the analysis head opening. A first set receives radiant light reflected from the falling objects. This reflected light is digitized and input to a comparator where the reflected light is compared to a reference value and a determination as to the quality of the object is made based on color. The second set of fibers is connected to an infrared light source and transmits a curtain of light across the opening, intercepting the travel of the objects. The third set of fibers receives the infrared light and is connected to a light detector which detects when objects pass through the curtain of light. The curtain of light is preferably wider than the objects. The light detector outputs a signal having peaks caused by the widest portions of objects passing through the light curtain.
    Type: Grant
    Filed: September 30, 1993
    Date of Patent: October 8, 1996
    Assignee: Xeltron Internacional S.A.
    Inventors: Fernando Castaneda, Arturo C. Aguero