VARIABLE NEUTRAL DENSITY FILTERS:
We offer spatially variable neutral density filters for
precise light intensity control. These economical filters are
manufactured by grading the thickness of a metal film so that
the transmission and reflection are varied in a linear
fashion. The optical density of the filters shown below vary from near 0 to 4.5 or greater across 3 mm. Call to specify your optical density
requirements.
Above: Optical density measured across the film’s edge after dicing.
Click here to request more information regarding our coating capabilities and thin film products.