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Diffusion Filter

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Diffusion filters are typically used for back lighted LCD modules such as Information Display Boards at airports, but also for key-boards and instruments in which a combination of the greatest possible light transmittance and a controlled dispersion of light - diffusion - is required. The readability of backlighted LCD is often negatively affected by sunlight, surrounding sources of light and reflec-tions. The Chroma Filter Diffusion Filters give the LCD light source the maximum effect, while at the same time create a contrast back-ground which makes the information clear. The diffusers special properties occur by mixing raw materials with different refractive indices. The filter therefore contains no pigments, which can hinder light transmission, thus an ideal diffusion of light is achieved.
The diffusion filter is placed close to the light source so that diffusion occurs before the light hits the LCD modules. With a diffusion filter, a maximum amount of light is distributed to the LCD, and only a minimal amount of parallel light leaves the filter.

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