Dichroic Filters
The term 'dichroism' derives from the Greek and in physics refers to the splitting of visible light into two colours when passing through crystals. Dichroic filters are used for colour separation and are based on dielectric interference.
These optical filters, which are used in optical transmission technology, in
displays and in projectors, work without absorption and have a high degree of
light permeability and excellent colour accuracy. Their selectivity is very high
and reaches approximately 80 % permeability for a change in wavelength of a few
nanometres. Dichroic filters are available as low-pass, high-pass and
band-pass filters.
Websites
The Imaging & Vision Handbook
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