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NENIR30B-C Dia. 25 mm Unmounted AR-Coated Absorptive Neutral Density Filter; 1050 - 1700nm; OD 3.0 AR 1050-1700nm

NENIR30B-C Dia. 25 mm Unmounted AR-Coated Absorptive Neutral Density Filter; 1050 - 1700nm; OD 3.0 AR 1050-1700nm

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)
1.4440236216729967
λ
1550 nm
B1
0.6961663
C1
0.004679148 μm2
B2
0.4079426
C2
0.013512063 μm2
B3
0.8974794
C3
97.93400254 μm2

NENIR30B-C Dia. 25 mm Unmounted AR-Coated Absorptive Neutral Density Filter; 1050 - 1700nm; OD 3.0 AR 1050-1700nm

The NENIR30B-C is a circular, unmounted neutral density filter, designed for use in the infrared spectrum, specifically between 1050 and 1700 nanometers. This filter, offered by Thorlabs, is part of their extensive catalog of optical elements, and it boasts an optical density (OD) of 3.0, providing significant light attenuation.

The filter is made from UVFS material, identified as MAL-1965, and has a diameter of 25 millimeters and a thickness of 1.97 millimeters. This makes it suitable for a wide range of optical applications where precise light control is required.

The NENIR30B-C features anti-reflection (AR) coatings on both the front and back surfaces, specifically designed for the 1050-1700nm wavelength range. This coating helps to minimize surface reflections, thereby improving transmission and reducing unwanted back-reflections.

The filter's shape is described as a thin lens, suggesting that it has been designed to minimize optical aberrations and distortions. This is particularly important in applications where high-precision optical alignment is required.

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