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Absorptive ND Filter - FNG2550
Absorptive ND Filter
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Product Line
Glass Neutral Density filters attenuate light by absorption, similar to gelatine filters, but are more robust with uniform absorption. Available in 12.5mm, 25mm diameters, and 50x50mm squares, they offer blocking between 0.1 and 4.0 OD. Knight Optical provides custom sizes and shapes for specific applications.
Product Specifications
- Product Code
- Transmittance
- 0.32% (546 nm)
- Dimensions
- 50 x 50 x 2.4 mm
- Thickness
- 2.4 mm
- Diameter Tolerance
- +0/-0.2 mm
- Length
- 50 mm
- Length Tolerance
- ±0.2 mm
- Optical Density
- 2.5 (546 nm)
- Shape
- Square
- Substrate
- NG3
- Surface Quality
- < 60-40 scratch-dig
- Width
- 50 mm
- Width Tolerance
- ±0.2 mm
- Supplier Location
- United Kingdom; Rhode Island, USA
Technical Documents
