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Thin-Film Coatings: Step Circular ND Filters
About REYNARD- Type: Filters
- Diameter / Dimension: 50mm - 100mm
- Filter Category: Neutral Density Filter
- Applications: Astronomy, Biomedical/Medical, Communications, Industrial, Military, Scientific Research, Other
- Wavelength: 375 - 2500 nm
- Inside Diameter: 7.5 mm and 25.4 mm
- Surface Quality: 80-50 scratch/dig
- TWE: < 2 waves/25 mm
Thin-film coatings: Step circular neutral density filters (VIS) can be used for calibration of illumination systems and are usable 375nm to 2500nm. Filter configuration consists of a circular glass substrate with spectrally flat ND metallic coating on one surface. The density variation takes place in discrete steps around the filter.
OD: 0.04 - 2.0
Custom sizes and densities are available.
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