900-1700nm Linear Graduated Filter

Linear gradient filters utilize a continuous coating method based on a multilayer wedge film structure to achieve spatially continuous filtering characteristics. The film slope can be adjusted according to the dispersion requirement to obtain the target linear rate of change. Linear gradient filters have highly integrated spectral capability, which is an irreplaceable advantage in the miniaturization and lightweight design of spectral instruments. They are widely used in lightweight hyperspectral imaging spectrometers, portable spectrometers, and medical endoscopes.