Optical apparatus for a fluorescence polarization instrument

Details Optical apparatus for a fluorescence polarization instrument Optical apparatus for a fluorescence polarization instrument

G - Physics

01

N

73/51.5

G01N 21/64 (2006.01)

Patent

CA 1165585

Canada - #3841 A B S T R A C T An improved optical system for a fluorescent polarization instrument including a low wattage, low intensity focused light source and a polarizer/liquid crystal combination in the excitation path focusing excitation light of alternate planes of perpendicular polarization onto a fluorescent liquid sample. Emitted light from the fluorescent sample is filtered, polarized and focused onto a photomultiplier for processing. A series of nonreflective baffles are placed around the sample to reduce reflections. Monitoring means monitor the excitation light and maintain a substantially constant intensity level focused on the sample. The low wattage, low intensity light source is provided by a 50 watt tungsten halogen projector lamp.

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