THE INDEX OF REFRACTION EFFECT ON ABSOLUTE FLUORESCENCEnMEASUREMENTS

摘要

The spatial distribution and the total quantity of light escaping from a phosphor depends on geometric shape and index of refraction (n). Measurements taken far out on the normal to a plane face, must be corrected by a factor of n ² Measure¬ments taken off the normal, or close in to the phosphor, or measurements of total light output, are difficult to analyze correctly in the general case. An analysis of previous efficiency measurements is presented. Most of them are subject to com-plex, though probably small corrections