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NE05A Dia. 25 mm Absorptive ND Filter; SM1-Threaded Mount; Optical Density 0.5

NE05A Dia. 25 mm Absorptive ND Filter; SM1-Threaded Mount; Optical Density 0.5

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

Properties

Shape
Circular
Diameter
25 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

NE05A Dia. 25 mm Absorptive ND Filter; SM1-Threaded Mount; Optical Density 0.5

The NE05A is a Neutral Density (ND) Filter, offered by Thorlabs, with a diameter of 25 mm and a thickness of 0.9 mm. This filter is designed to reduce the intensity of incident light without altering its color composition, making it an essential tool in various optical applications.

The filter is made of n-BK7 Schott, a high-quality optical glass known for its excellent transmittance and low auto-fluorescence. This material ensures high-fidelity light transmission, making the NE05A suitable for precise optical measurements and experiments.

The NE05A features a front and back coating of tho ne05a, which provides additional protection and enhances the filter's performance. This coating helps to minimize surface reflections, thereby improving light transmission and reducing unwanted glare.

The filter is SM1-threaded, allowing it to be easily mounted and integrated into existing optical systems. This threading also enables the use of various accessories, such as lens tubes and other threaded components, providing flexibility in system design.

The optical density of the NE05A is 0.5, which means it reduces the light intensity by a factor of 3 (or 50%). This makes it suitable for applications where moderate light reduction is required.

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