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Laser particle sorter

  • US 4,887,721 A
  • Filed: 11/30/1987
  • Issued: 12/19/1989
  • Est. Priority Date: 11/30/1987
  • Status: Expired due to Term
First Claim
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1. Apparatus for sorting selected particles from a variety of particles in a flow stream, comprising:

  • first optical means defining a first laser beam waist diameter effective for propelling said variety of particles along a preselected propulsion path;

    second optical means defining a second laser beam waist diameter intersecting said propulsion path along a deflection path at an angle with said propulsion path and having an intensity effective for deflecting said selected particles to a location outside said propulsion path;

    probe means for identifying a selected characteristic in said variety of particles; and

    modulation means responsive to said probe means for selectively activating said second optical means for deflecting particles with said identified characteristic.

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