The circular variable attenuator / beamsplitter operates in visible and NIR light. The density varies linearly upon rotating the disk. A new and reliable film of NiCrFe has been designed to achieve broadband attenuation.
Accuracy of Recorded Density: ± 2% of full scale Linearity of Relative Density Wedge Profile: ± 7% of maximum value
Deviations Allowed from Catalog Nominal
Relative Density at Range Endpoints: ± 5% Dimensions: ± 0.1 mm Coated Sector Angular Width: 300° Parallelism: 30 arc mins Surface Quality: III / 40-20 scratch and dig Coating: Side 1: NiCrFe attenuation + multi-layer AR film. Side 2: Multilayer antireflection film