[R00160-30]
The step linear neutral density filter can be used for calibration of various illumination systems. The filter can be used from 370nm to 2600nm. The filter configuration consists of a glass substrate with a spectrally flat neutral density metallic coating. The density variations take place in discrete steps. Filters are supplied with calibration data. Other configurations and step linear filters are available on special order.
Reynard Corporation standard parameters apply:
Substrate Material: BK-7
Thickness: 2mm +/- 0.2mm
Surface Quality: 80-50 Scratch & Dig
Parallelism: < 3 Arc Minutes
