Designed to pass a broad spectrum of longer wavelength light while blocking shorter wavelengths, our Longpass Filters are specifically designed for use in industrial imaging and can be used in a range of machine vision applications operating in VIS (Visible) range through NIR (Near-IR). They are beneficial in fluorescence applications to block an excitation light source or to pass multiple emission wavelengths, improving signal to noise ratio. These filters are also used in photography and astronomy.

FJW Optical Longpass Filters come standard with an Anti-Reflection coating and they are in-stock, ready-to-ship.