narrowband filter

Narrow band filter is a kind of band pass filter, usually the bandwidth is less than 20nm is called narrow band filter. The main role is to make a specific wavelength of light through, so that other wavelengths of light reflection (or attenuation) optical components. The half-wave width is usually controlled at 20nm or less, and according to the wavelength range, there are ultraviolet, visible light, near-infrared wavelengths and other bands. The products are mainly used in fluorescence analyzers, enzyme markers, cable TV upgrading equipment, wireless transmission equipment, ink identification and other equipment.