Optical Filter
Optical filters selectively transmit or block specific wavelengths of light and are widely used in spectroscopy, fluorescence microscopy, machine vision, laser systems, telecommunications, and scientific instrumentation. Their optical performance depends on precise multilayer dielectric coating thickness and refractive index.
StellarNet Thin Film Measurement Systems enable rapid characterization of multilayer optical filters through optical reflectance and transmission spectroscopy, allowing engineers to verify coating performance and manufacturing consistency.




