Custom Circular Variable ND Filters
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Phone: +1 949-366-8866
Fax: +1 949-498-9528
- Type: Filters
- Diameter / Dimension: 25mm - 200mm
- Filter Category: Neutral Density Filter
- Applications: Astronomy, Biomedical/Medical, Communications, Industrial, Military, Scientific Research, Other
- Diameter: 25 - 200+ mm
- Thickness: 2.2 mm ±0.2 mm
- Surface Quality (SQ): 80-50 scratch/dig
- TWE: < 2 waves per 25 mm
- Paralleism: < 3 arc min
Custom Circular Variable Neutral Density filters are used in optical systems to change the light intensity from 100% to less than 0.1%. As the filter rotates, the beam intensity is modified due to the density variation of a gradient metallic coating around the filter. Features include gradient coatings from 45° to 360° rotation and operate from the UV to the far IR. Custom sizes available.
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