Optics: measuring and testing – By dispersed light spectroscopy – With sample excitation
Reexamination Certificate
2003-09-08
2008-08-12
Evans, F. L (Department: 2877)
Optics: measuring and testing
By dispersed light spectroscopy
With sample excitation
C250S458100, C356S318000
Reexamination Certificate
active
07411673
ABSTRACT:
A fluorescence spectrophotometer having an excitation double monochromator, a coaxial excitation/emission light transfer module, and an emission double monochromator. Each monochromator includes a pair of holographic concave gratings mounted to precisely select a desired band of wavelengths from incoming broadband light without using other optical elements, such as mirrors. Selected excitation light is directed into a sample well by a light transfer module that includes a coaxial excitation mirror positioned to direct excitation light directly to the bottom of a well of a multi-well plate. Fluorescence emission light that exits the well opening is collected by a relatively large coaxial emission mirror. The collected emission light is wavelength selected by the emission double monochromator. Selected emission light is detected by a photodetector module.
REFERENCES:
patent: 4099872 (1978-07-01), White
patent: 4355871 (1982-10-01), Nevyas et al.
patent: 4657390 (1987-04-01), Doyle
patent: RE32598 (1988-02-01), White
Conrad Michael J.
Gould Gene
Chromagen, Inc.
Evans F. L
Pillsbury Winthrop Shaw & Pittman LLP
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