NE2R40A Dia. 2 in Absorptive ND Filter; SM2-Threaded Mount; Optical Density 4.0
- Type
- Filter
- Subtype
- Neutral Density Filter
- Brand
- Thorlabs
Properties
- Shape
- Circular
- Diameter
- 50.8 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
NE2R40A Dia. 2 in Absorptive ND Filter; SM2-Threaded Mount; Optical Density 4.0
The NE2R40A is a Neutral Density Filter by Thorlabs, designed with a circular shape and a diameter of 2 inches (50.8 mm). This filter is specifically engineered for use with a wavelength of 633 nm, making it suitable for various optical applications. The NE2R40A boasts a thickness of 2.8 mm, ensuring durability and precision.
This filter features a unique coating on both the front and back surfaces, identified as 'tho ne40a'. This coating is designed to provide superior absorption, contributing to the filter's overall performance. The NE2R40A is mounted with an SM2-threaded mount, offering secure and easy installation into your optical system.
The NE2R40A is currently in stock and available for purchase through the Thorlabs website. For more information, including technical specifications and purchasing options, please refer to the provided weblink.