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FND-50C02-50 50 mm Dia. Unmounted N-BK7 Visible Reflective Neutral Density Filter; t=2mm 400-700nm

FND-50C02-50 50 mm Dia. Unmounted N-BK7 Visible Reflective Neutral Density Filter; t=2mm 400-700nm

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

Properties

Shape
Circular
Diameter
50 mm

Material

Name
N-BK7
Dispersion Equation
Sellmeier
n (λ)
1.5185223876207927
λ
550 nm
B1
1.03961212
C1
0.00600069867 μm2
B2
0.231792344
C2
0.0200179144 μm2
B3
1.01046945
C3
103.560653 μm2

FND-50C02-50 50 mm Dia. Unmounted N-BK7 Visible Reflective Neutral Density Filter; t=2mm 400-700nm

The FND-50C02-50 is a high-quality Neutral Density Filter, unmounted and with a 50 mm diameter. This filter is designed for use in the visible spectrum, specifically between 400 and 700 nanometers. The filter is made from N-BK7 Schott, a well-regarded optical glass known for its excellent transmittance and low auto-fluorescence.

The filter features a thickness of 2mm, which is optimal for maintaining the integrity of the optical path while minimizing unwanted reflections and aberrations. The front and back surfaces of the filter are coated with Opt FND-50, a reflective coating specifically designed for Neutral Density Filters. This coating enhances the filter's performance by reducing surface reflections and improving overall light transmission.

The filter's shape is that of a thin lens, which is beneficial for applications where space is a constraint. The filter is sourced from OptoSigma, a reputable vendor known for their high-quality optical components. The filter is currently in stock and available for immediate purchase through their website.

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