FNDU-25C02-5 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-25C02-5 25 mm Dia. Unmounted UVFS Reflective Neutral Density Filter; t=2mm 200-400nm
OptoSigma's FNDU-25C02-5 is a 25 mm diameter, unmounted Neutral Density Filter, designed for use in the ultraviolet spectrum. This filter is part of the UVFS series, identified by the material ID [uvfs mal- 1965].
The filter features a reflective neutral density coating, denoted as 'opt fndu-5' on both the front and back surfaces. This coating is designed to reduce the intensity of ultraviolet light, specifically within the wavelength range of 200-400nm, without altering the color balance of the light passing through it.
The filter has a thickness of 2mm, which is considered 'thin' in lens terminology. This thinness can be beneficial in certain applications where space is limited or when stacking multiple filters.
The FNDU-25C02-5 is currently in stock and available for purchase through the OptoSigma website. For more information, including pricing and detailed specifications, please refer to the provided weblink.