NE40B-B Dia. 25 mm AR-Coated Absorptive Neutral Density Filter; 650-1050nm; OD 4.0 AR 650-1050nm
- Type
- Filter
- Subtype
- Neutral Density Filter
- Brand
- Thorlabs
Properties
- Shape
- Circular
- Diameter
- 25 mm
Material
- Name
- UVFS
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.4570121244558207
- λ
- 633 nm
- B1
- 0.6961663
- C1
- 0.004679148 μm2
- B2
- 0.4079426
- C2
- 0.013512063 μm2
- B3
- 0.8974794
- C3
- 97.93400254 μm2
NE40B-B Dia. 25 mm AR-Coated Absorptive Neutral Density Filter; 650-1050nm; OD 4.0 AR 650-1050nm
The NE40B-B is a Neutral Density Filter, part of the extensive catalog of optical elements offered by Thorlabs. This absorptive filter, with a catalog number NE40B-B, is specifically designed for use within the 650-1050nm wavelength range, providing excellent optical density (OD) of 4.0.
The filter boasts a circular shape, with a diameter of 25 mm and a thickness of 2.8 mm, making it compatible with a wide range of optical systems. The NE40B-B filter features a Thin Lens shape, which is beneficial for maintaining the integrity of the optical path in your setup.
The front and back surfaces of the filter are coated with AR (Anti-Reflective) coatings, specifically designed for the 650-1050nm wavelength range. This coating helps minimize surface reflections, thereby reducing the overall loss of light and improving the overall performance of your optical system.
The NE40B-B filter is currently in stock and available for immediate purchase through the Thorlabs website. For more detailed information, you can visit the product page at https://www.thorlabs.com/thorproduct.cfm?partnumber=NE40B-B.