FNDU-20C02-70 20 mm Dia. Unmounted UVFS Reflective Neutral Density Filter; t=2mm 200-400nm
- Type
- Filter
- Subtype
- Neutral Density Filter
- Brand
- OptoSigma
Properties
- Shape
- Circular
- Diameter
- 20 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-20C02-70 20 mm Dia. Unmounted UVFS Reflective Neutral Density Filter; t=2mm 200-400nm
OptoSigma's FNDU-20C02-70 is a 20 mm diameter, unmounted UVFS reflective neutral density filter, designed for use in the ultraviolet spectrum. This filter is part of the OptoSigma family of reflective neutral density filters, which are known for their high-quality optical performance and durability.
The filter is made from UVFS material, which is specifically designed for use in the ultraviolet spectrum, providing excellent transmission and blocking characteristics in this range. The filter has a thickness of 2mm, providing robustness and stability during use.
The front and back surfaces of the filter are coated with Opt FNDU-70, a proprietary coating developed by OptoSigma. This coating provides additional protection for the filter, reducing the risk of damage from exposure to light, dust, or other environmental factors.
The filter is designed in a thin lens shape, which helps to minimize optical distortions and provides a clear, undistorted view of the subject. The circular geometry of the filter allows it to be easily mounted in various optical systems.