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AND-20S-10 20 x 20 mm Optical Glass Unmounted Visible Absorptive Neutral Density Filter 400-700nm

AND-20S-10 20 x 20 mm Optical Glass Unmounted Visible Absorptive Neutral Density Filter 400-700nm

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

Properties

Shape
Rectangular
A
20 mm
B
20 mm

Material

Name
UVFS
Dispersion Equation
Sellmeier
n (λ)
1.4599108862211283
λ
550 nm
B1
0.6961663
C1
0.004679148 μm2
B2
0.4079426
C2
0.013512063 μm2
B3
0.8974794
C3
97.93400254 μm2

AND-20S-10 20 x 20 mm Optical Glass Unmounted Visible Absorptive Neutral Density Filter 400-700nm

The AND-20S-10 is a 20 x 20 mm Neutral Density Filter, part of the Absorptive Neutral Density Filter range from OptoSigma. This unmounted filter is designed for use in the visible spectrum, specifically between 400-700nm.

The filter is rectangular in shape, a common choice for applications that require a larger active area than circular filters can provide. It has a thickness of 2mm, which contributes to its durability and stability in optical systems.

The filter's coating is a key feature, with both the front and back surfaces coated with 'opt and-10'. This coating is specifically designed to provide neutral density, meaning it reduces the intensity of light without altering its color.

The filter's geometry is another important aspect. With dimensions of 20 x 20 mm, it offers a substantial area for light to pass through while maintaining a manageable size for various applications.

The filter is made from UVFS Mal-1965, a material known for its optical quality and versatility. This material, combined with the filter's precise construction, ensures high transmittance and low scatter, making it suitable for a wide range of optical applications.

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