NENIR40B Dia. 25 mm Unmounted NIR Absorptive ND Filter; OD 4.0
- 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
NENIR40B Dia. 25 mm Unmounted NIR Absorptive ND Filter; OD 4.0
The NENIR40B is a circular Neutral Density Filter, unmounted, with a diameter of 25 mm and a thickness of 2.6 mm. This filter is designed for use in the near-infrared (NIR) region of the spectrum, specifically at a wavelength of 1550 nm. The filter is manufactured by Thorlabs, a leading vendor in the field of optical components.
The NENIR40B features a specialized coating on both the front and back surfaces, identified as 'tho nenir40b'. This coating is designed to absorb specific wavelengths of light, reducing the overall intensity of the light passing through the filter. The absorption properties of the coating make it particularly effective for use in NIR applications.
The filter has a base shape of a Thin Lens, which is a type of optical component that focuses light to a point. This shape can be beneficial in certain optical systems where light needs to be concentrated or directed.
The catalog number for this item is NENIR40B, and it is currently in stock. More information about this product, including pricing and availability, can be found on the Thorlabs website using the provided weblink.
