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NE13A-A Dia. 25 mm AR-Coated Absorptive Neutral Density Filter; SM1-Threaded Mount; 350-700nm; OD 1.3 AR 350-700nm

NE13A-A Dia. 25 mm AR-Coated Absorptive Neutral Density Filter; SM1-Threaded Mount; 350-700nm; OD 1.3 AR 350-700nm

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

Properties

Shape
Circular
Diameter
25 mm

Material

Name
UVFS
Dispersion Equation
Sellmeier
n (λ)
1.4570121244558207
λ
633 nm
B1
0.6961663
C1
0.004679148 μm2
B2
0.4079426
C2
0.013512063 μm2
B3
0.8974794
C3
97.93400254 μm2

NE13A-A Dia. 25 mm AR-Coated Absorptive Neutral Density Filter; SM1-Threaded Mount; 350-700nm; OD 1.3 AR 350-700nm

The NE13A-A is a Neutral Density Filter, specifically designed for use in optical systems where light intensity needs to be reduced without altering the color composition of the light. This filter, sourced from Thorlabs, boasts a 25 mm diameter and a thickness of 2.5 mm, making it suitable for a wide range of applications.

The NE13A-A filter features an Absorptive Neutral Density type, which means it reduces light intensity by absorbing a portion of the light spectrum. This filter is designed to operate within the wavelength range of 350-700nm, making it versatile for use in various optical systems.

The filter's coating is another notable feature. Both the front and back surfaces are AR-coated (Anti-Reflective coated) for the 350-700nm range. This coating helps minimize surface reflections, thereby improving transmission and reducing unwanted ghost images or flare.

The filter is mounted in an SM1-threaded mount, which is a standard 1.035-20 thread per inch (TPI) mount commonly used in Thorlabs' optomechanical components. This mount allows for easy integration into existing optical systems.

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