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Method of and apparatus for type and color sorting of cullet

  • US 8,436,268 B1
  • Filed: 06/17/2005
  • Issued: 05/07/2013
  • Est. Priority Date: 08/12/2002
  • Status: Active Grant
First Claim
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1. A method of preparing to effectively sort a group of objects of several types and colors into separate groups of similar type and color objects comprising:

  • a. irradiating with a UV source, at least one object with one or more preselected wavelengths of radiation to cause the object to fluoresce and emit a spectrum of radiation in a type sensing region;

    b. determining at least one spectral intensity value from the spectrum of radiation;

    c. calculating a type value with a first sensor device from the spectral intensity value;

    d. transmitting at least one light with a light source through the at least one object in a color sensing region;

    e. determining at least one light intensity value from the transmitted light in the color sensing region; and

    f. calculating a color value with a second sensor device from the light intensity value.

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