NENIR01B Dia. 25 mm Unmounted NIR Absorptive ND Filter; OD 0.1
- Type
- Filter
- Subtype
- Neutral Density Filter
- Brand
- Thorlabs
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
NENIR01B Dia. 25 mm Unmounted NIR Absorptive ND Filter; OD 0.1
The NENIR01B is a circular Neutral Density Filter with a diameter of 25 mm and a thickness of 0.5 mm, sourced from Thorlabs. This filter is designed for use in the near-infrared (NIR) region of the spectrum, specifically at a wavelength of 1550 nm.
The NENIR01B features a special coating on both the front and back surfaces, identified as 'tho nenir01b'. This coating is designed to absorb specific wavelengths within the NIR spectrum, thereby reducing the intensity of the light that passes through the filter. The coating has an Optical Density (OD) of 0.1, which signifies a 10% transmission of the incident light.
The filter is designed in the shape of a thin lens, which may provide additional benefits in certain optical systems, such as reduced weight and minimized optical aberrations. The catalog number for this item is NENIR01B, and it can be found on the Thorlabs website, where it is currently listed as in stock.
