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What is a Color Filter?

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Monday, September 30, 2019
BRD Optical Co. Ltd.

Broadband filters are used to improve the contrast and performance of optical scanners with red, yellow, and amber led displays. Medium density three-slot filters and polarizers enhance the contrast of liquid crystal displays (LCDS) by reducing internal reflections and creating a large variable between the display output power and the background.The color filter is made by means of vacuum evaporation, and the optical film is plated on the glass substrate, which can be adjusted to allow specific light to penetrate and reflect the remaining wave band at the same time. With stable quality filters and precise color difference control, all lighting equipment using color filters can present a consistent color concentration and perfect image without fading due to changes in the environment. Diversified color design can provide more diversified choices for your planning projects. Color filters are made from optical substrates such as acrylic, polycarbonate and glass. Colouring may be achieved by stacking substrates with water-absorbing materials or by thin film coating; These coatings can pass through or block specific wavelengths of the visible, infrared, and near-infrared spectra.

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