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Systems and methods for detecting scattered light from a particle using illumination incident at an angle

  • US 7,532,327 B2
  • Filed: 09/19/2005
  • Issued: 05/12/2009
  • Est. Priority Date: 09/17/2004
  • Status: Expired due to Fees
First Claim
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1. A system for detecting and identifying a particle, the system comprising:

  • an optical axis;

    a target zone, the optical axis intersecting the target zone;

    a detector configured to detect light scattered by a single particle in the target zone and generate signals based on the detected light scattered by the single particle;

    a light source configured to generate a light beam and direct the light beam through the target zone at an angle, the angle formed relative to the optical axis; and

    a processing system configured to receive signals from the detector, convert the signals into an optical pattern associated with the single particle, and compare the optical pattern associated with the single particle to at least one stored optical pattern.

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