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Colour Line Scan Technology - Prism

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Part 2 of our colour line scan series

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Imaging & Vision Handbook

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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.


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