Medical Definition of Spatial filter
1.
Device consisting of a lens pair and a pinhole aperture stop. Intensity fluctuations over the spatial extent of a laser beam are removed by passing the focused beam through the aperture stop. The pinhole must be placed in a vacuum to prevent air breakdown by the focused beam. These filters are used to counter the effects caused by self-focusing.
(09 Oct 1997)
Lexicographical Neighbors of Spatial Filter
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