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Dielectric filter (color separation filter) is used in a variety of applications where it is necessary to isolate certain regions in visible spectrum. A few of the more common applications are used as color enlargers, photocopiers and light balancing filters. Also, you can use them to separate the incident light into two or more light beams. This filter is able to be used when reflecting certain waves at most of random incident angle while penetrating other waves.
Tae Young Optics can produce hard, durable dielectric films which show no signs of degradation with age and use by all of the coating materials used in these filters. Unlike the organic dye or gelatin type whose filter color will fade with usage, the color can keep in very stable condition.