Glossary - alphabet order - "U"

UV & IR-cut filter coating

It is a multi-layer coating for filtering out both ultraviolet light (light with wavelength of 400 nm or below) and infra-red light (light with wavelength of 650 nm or above). A CCD or CMOS device is sensitive to both ultraviolet and infra-red light. Ultraviolet light casts a bluish tinge on images. This filter coating remove this coloring.

Reference: IR-cut filter coating



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