FNDU-25C02-20 25 mm Dia. Unmounted UVFS Reflective Neutral Density Filter; t=2mm 200-400nm
- Type
- Filter
- Subtype
- Neutral Density Filter
- Brand
- OptoSigma
Properties
- Shape
- Circular
- Diameter
- 25 mm
Material
- Name
- UVFS
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.4877929746541196
- λ
- 300 nm
- B1
- 0.6961663
- C1
- 0.004679148 μm2
- B2
- 0.4079426
- C2
- 0.013512063 μm2
- B3
- 0.8974794
- C3
- 97.93400254 μm2
FNDU-25C02-20 25 mm Dia. Unmounted UVFS Reflective Neutral Density Filter; t=2mm 200-400nm
OptoSigma's FNDU-25C02-20 is a 25 mm diameter, unmounted, reflective neutral density filter, designed for use in the ultraviolet spectrum, specifically between 200-400nm. This filter is part of the UVFS-MAL series, identified by the material ID "uvfs mal-1965".
The filter boasts a thickness of 2mm, providing a balance between durability and minimal optical impact. It features a thin lens shape, making it an ideal choice for applications where space is a constraint.
The front and back surfaces of the filter are coated with "opt fndu-20", a reflective neutral density coating that reduces light intensity without altering the color composition. This coating ensures consistent performance across the filter's spectral range.
The filter is currently in stock and available for purchase through the OptoSigma website. For more detailed information, including technical specifications and purchasing options, please refer to the provided weblink.