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Scanning fluorometer

  • US 6,313,471 B1
  • Filed: 03/23/1999
  • Issued: 11/06/2001
  • Est. Priority Date: 08/18/1998
  • Status: Expired due to Fees
First Claim
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1. A sample characterizing instrument, comprising:

  • a source of excitation light comprising;

    a lamp;

    a scanning monochromator; and

    a plurality of optical filters within a filter wheel;

    a sample testing region;

    a detection assembly comprising;

    a detector;

    a second scanning monochromator; and

    a second plurality of optical filters within a second filter wheel;

    an optical assembly coupled to said excitation light source and coupled to said detection assembly, wherein said optical assembly directs said excitation light to said sample testing region, and wherein said optical assembly directs sample light from said sample testing region to said detection assembly;

    a heater coupled to said sample testing region;

    a temperature monitor coupled to said sample testing region;

    an air circulation system, said air circulation system circulating air within said sample testing region;

    a processor coupled to said heater and said temperature monitor, wherein said processor maintains a temperature with a predetermined temperature variation proximate to said sample testing region, and wherein said processor maintains a humidity proximate to said sample testing region in excess of 90 percent;

    a distance sensing assembly coupled to said processor, said distance sensing assembly determining a distance between an upper surface of said sample testing region and a lid surface in said sample testing region; and

    a carriage assembly coupled to said processor, wherein said carriage assembly controls said distance between said upper surface of said sample testing region and said lid surface.

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