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Method and apparatus for producing and measuring light and for determining the amounts of analytes in microplate wells

  • US 6,538,735 B1
  • Filed: 02/25/2000
  • Issued: 03/25/2003
  • Est. Priority Date: 02/25/2000
  • Status: Expired due to Term
First Claim
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1. A photochemical method for measuring light emitted by a liquid subjected to an excitation light said liquid contained in a vessel, said method comprising:

  • (a) producing an excitation light having a first wavelength band, for a pre-determined time period;

    (b) transmitting said excitation light into said liquid through a fiber bundle;

    (c) said liquid producing, in a photochemical response to said excitation light, an emitted light having a second wavelength band, said second wavelength band being shorter than and separated from said first wavelength band;

    (d) passing said emitted light to a detector through a fiber bundle surrounding and coaxial with the fiber bundle of (a);

    (e) detecting said emitted light for a predetermined period of time after producing of said excitation light ceases;

    (f) determining the amount of light received by said detector, said amount being indicative of the amount of said emitted light produced by said liquid; and

    , (g) shielding said detector from said excitation light when said excitation light is being produced.

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