Optical apparatus for a fluorescence polarization instrument

Abstract From the Canadian patent

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 …