NENIR50B Dia. 25 mm Unmounted NIR Absorptive ND Filter; OD 5.0
- 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
NENIR50B Dia. 25 mm Unmounted NIR Absorptive ND Filter; OD 5.0
The NENIR50B is a circular Neutral Density Filter with a diameter of 25 mm and a thickness of 2.3 mm, designed for use in the near-infrared (NIR) spectrum at a wavelength of 1550 nm. This filter is sourced from Thorlabs, a reputable vendor known for its high-quality optical components.
The NENIR50B features a unique coating on both the front and back surfaces, identified as 'tho nenir50b'. This coating is specifically designed to absorb NIR light, providing an optical density (OD) of 5.0. This high OD value means that the filter reduces the intensity of the incident light by a factor of 100,000, making it ideal for use in high-power NIR applications where light attenuation is crucial.
The filter's geometry is shaped as a thin lens, which can be beneficial in certain optical systems where minimal thickness is required. The catalog number for this filter is NENIR50B, and it can be found on Thorlabs' official website, where it is currently in stock.
