Preferred Label : attenuance filter;
IUPAC definition : An optical device (filter) which reduces the radiant power of a light beam by a constant
factor over all wavelengths within its operating range. Sometimes called attenuator
or neutral density filter.;
Origin ID : A00514;
See also
An optical device (filter) which reduces the radiant power of a light beam by a constant
factor over all wavelengths within its operating range. Sometimes called attenuator
or neutral density filter.