.~.~ Of differential amplitude at two source or detector distances
DEFINITION
Classification: 356/4.06
Of differential amplitude at two source or detector distances:
(under subclass 4.01) Subject matter that includes either two sources at different distances from a target alternately illuminating the target at the remote point that a fixed detector views or includes two detectors at different distances receiving focused images of the target illuminated by a single source from which distance is determined based on the relative intensities detected.
