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FND-15C02-40 15 mm Dia. Unmounted N-BK7 Visible Reflective Neutral Density Filter; t=2mm 400-700nm

FND-15C02-40 15 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
15 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-15C02-40 15 mm Dia. Unmounted N-BK7 Visible Reflective Neutral Density Filter; t=2mm 400-700nm

This is the FND-15C02-40, a 15 mm diameter unmounted Neutral Density Filter from OptoSigma. The filter is made of N-BK7, a high-quality glass material from Schott, ensuring excellent optical performance. It is designed for use in the visible spectrum, specifically between 400 and 700 nanometers.

The filter features a reflective neutral density coating on both the front and back surfaces, denoted as 'opt fnd-40'. This coating reduces the intensity of light passing through the filter without altering its color, making it ideal for applications where light intensity needs to be controlled, such as in photography or scientific research.

The filter has a thickness of 2 millimeters and a circular shape, following a thin lens geometry. This makes it compatible with various optical systems and setups. The 'FND-15C02-40' is currently in stock and available for purchase through the OptoSigma website.

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