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ND540A Dia. 0.5 in ND Reflective Filter; SM05-Threaded Mount; Optical Density 4.0

ND540A Dia. 0.5 in ND Reflective Filter; SM05-Threaded Mount; Optical Density 4.0

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

ND540A Dia. 0.5 in ND Reflective Filter; SM05-Threaded Mount; Optical Density 4.0

The ND540A is a Neutral Density Filter with a diameter of 0.5 inches, manufactured by Thorlabs. This filter is designed for use with wavelengths of 633 nanometers and features a Schott N-BK7 material ID. The ND540A boasts an impressive optical density of 4.0, providing a significant reduction in light intensity.

The filter is circular in shape and has a thin lens design, with a diameter of 12.7 millimeters and a thickness of 1 millimeter. This makes it a compact and lightweight option for various optical applications. The front and back of the filter are coated with THo ND40, a specialized coating that enhances its neutral density capabilities.

The ND540A is mounted with an SM05 thread, ensuring a secure and stable fit. According to Thorlabs' website, the item is currently in stock, making it readily available for immediate use. For more information, users can refer to the product's catalog number (ND540A) and visit the provided weblink.

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