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FNDU-25C02-5 25 mm Dia. Unmounted UVFS Reflective Neutral Density Filter; t=2mm 200-400nm

FNDU-25C02-5 25 mm Dia. Unmounted UVFS Reflective Neutral Density Filter; t=2mm 200-400nm

Type
Filter
Subtype
Neutral Density Filter
Brand
OptoSigma
Product webpage
OptoSigma products in the 3DOptix catalog

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.

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