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ND204B 50 mm x 50 mm; Unmounted Reflective ND Filter; Optical Density 0.4

ND204B 50 mm x 50 mm; Unmounted Reflective ND Filter; Optical Density 0.4

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

Properties

Shape
Rectangular

Material

Name
N-BK7
Dispersion Equation
Sellmeier
n (λ)
1.5150823520020043
λ
633 nm
B1
1.03961212
C1
0.00600069867 μm2
B2
0.231792344
C2
0.0200179144 μm2
B3
1.01046945
C3
103.560653 μm2

ND204B 50 mm x 50 mm; Unmounted Reflective ND Filter; Optical Density 0.4

The ND204B is a Neutral Density Filter, offered by Thorlabs, with a catalog number of ND204B. This filter is unmounted and has a rectangular base shape, making it suitable for a variety of applications. The filter is made of N-BK7 Schott material, a high-quality borosilicate glass known for its excellent optical properties.

The ND204B has a thickness of 2 mm and dimensions of 50 mm in width and 50 mm in height. It is coated with THo ND04 on both the front and back, providing a neutral density of 0.4. This coating ensures consistent light reduction across the visible spectrum, making it an ideal choice for applications requiring controlled light intensity.

The filter's shape is thin lens, which is designed to minimize optical aberrations and ensure high-quality imaging. The ND204B is currently in stock and available for purchase through the provided weblink. This filter is a reliable and versatile option for those seeking a high-quality Neutral Density Filter.

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