Document Type
Patent
Publication Date
June 2013
Patent Number
8467059
Abstract
An apparatus for measuring fluorescence of potable liquids contained within an optical quartz cell includes a deep UV laser or a compact UV LED that generates a light beam. A UV blocking and visible light transmitting optical filter reduces out-of-band emission from the LED. The optical quartz cell is between a pair of plane mirrors so that light from the light source travels through it several times. A concave mirror collects a fluorescence signal and has a common optical axis with a lens. The common optical axis is normal to an optical axis of the light beam. The concave mirror and lenses are positioned on opposite sides of the optical quartz cell. A fluorescence detector is in optical alignment with the concave mirror and the lens. A boxcar averager is in electrical communication with the fluorescence detector. Optical wavelength selection of the fluorescence emission uses optical filters or a spectrometer.
Application Number
12/887,948
Recommended Citation
Killinger, Dennis K.; Sharikova, Anna; and Sivaprakasam, Vasanthi, "Deep-UV LED and laser induced fluorescence detection and monitoring of trace organics in potable liquids" (2013). USF Patents. 224.
https://digitalcommons.usf.edu/usf_patents/224
Assignees
University of South Florida
Filing Date
09/22/2010
Primary/U.S. Class
356/417
