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Submersible light-directing member for material excitation in microfluidic devices

  • US 6,900,889 B2
  • Filed: 12/18/2003
  • Issued: 05/31/2005
  • Est. Priority Date: 07/12/2001
  • Status: Expired due to Term
First Claim
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1. A system for use in the optical detection of sample material in a-channel of a microfluidic comprising:

  • a microfluidic device having an opening in a first surface and at least one channel having a detection zone in fluid communication with said opening;

    a light-directing member separate from said microfluidic device, said member comprising a distal end, and a reflecting surface adjacent said distal end, said distal end being positionable within said opening such that when a light source is aimed at said reflecting surface, light reflects off said reflecting surface towards said detection zone within said at least one channel of said microfluidic device; and

    a detector positioned to receive non-reflected light from said detection zone.

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