(under subclass 1) Subject matter including means to spatially modulate a beam of X-rays prior to its impinging upon an object or means to spatially demodulate a modulated beam.
(1) Note. The spatial modulation may be produced by spatial filtering of an unmodulated beam or by means within the X-ray source which directly produces a modulated beam.
SEE OR SEARCH THIS CLASS, SUBCLASS:
145, for X-ray zone plates which may be used as modulators or demodulators.
