NENIR04B Dia. 25 mm Unmounted NIR Absorptive ND Filter; OD 0.4
- 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
NENIR04B Dia. 25 mm Unmounted NIR Absorptive ND Filter; OD 0.4
The NENIR04B is a circular Neutral Density Filter, unmounted, with a diameter of 25 mm and a thickness of 0.6 mm. This filter is designed for use in the near-infrared (NIR) region of the spectrum, specifically at a wavelength of 1550 nm. The NENIR04B is sourced from Thorlabs, a reputable vendor known for its high-quality optical components.
The filter features a thin lens shape and is coated with a specialized NIR absorptive material, identified as "uvfs mal- 1965". This coating is applied to both the front and back surfaces of the filter, ensuring consistent performance and optimal absorption of NIR light. The coating is designated as "tho nenir04b" for both surfaces.
The NENIR04B is currently in stock and available for immediate purchase. For more detailed information, including pricing and availability, please refer to the vendor's website using the provided weblink. This link has been verified and is currently valid.
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