Neutral Density Filters

Digital neutral density filters are used to control the intensity profiles in illuminations and projection systems. These filters contain well-defined matal absorber micro-structures that are randomly distributed on a fused silica substrate. The density and size of the structures can be customized to meet precisely the transmission profile required by the application. One- and two-dimensional profiles are available.

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Features		Applications
High accuracy Large clear aperture High damage threshold Broadband attenuation for DUV to IR wavelenghts Well defined 1 or 2 dimensional transmission profiles		Soft apertures Illumination Projection