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ND520A Dia. 0.5 in ND Reflective Filter; SM05-Threaded Mount; Optical Density 2.0

ND520A Dia. 0.5 in ND Reflective Filter; SM05-Threaded Mount; Optical Density 2.0

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

Properties

Shape
Circular
Diameter
12.7 mm

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

ND520A Dia. 0.5 in ND Reflective Filter; SM05-Threaded Mount; Optical Density 2.0

The ND520A is a Neutral Density Filter from Thorlabs, designed with a circular base shape and a diameter of 0.5 inches. This filter is made from n-bk7 schott material and has a thickness of 1 millimeter. It is designed to work optimally at a wavelength of 633 nanometers.

The ND520A features a thin lens shape and is equipped with a front and back coating of tho nd20. This coating is responsible for the filter's optical density of 2.0. The filter is mounted with an SM05 thread, ensuring a secure and stable fit.

According to the vendor's information, the ND520A is currently in stock and can be purchased directly from Thorlabs via the provided weblink. The catalog number for this item is ND520A.

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