MONOBLOCK POLYCHROMATOR USING FIBER OPTICS FOR TEST AND DIAGNOSTIC SYSTEMS

Sensors are proposed and designed for determining the concentration of luminescing impurities in various process media. The sensors consist of a quartz monoblock with a concave diffraction replica grating and c onnecting optical fibers. This makes it possible to combine in one opt ical element the collimating, dispersive, and focusing properties requ ired for spectral analysis. Comparison of the signal level signal prod uced by the radiation detector responding to the fluorescence intensit y of a substance being monitored and the signal in the comparison chan nel makes it possible to monitor the concentration with respect to a p redetermined concentration dependence.