NE2R20B Dia. 2 in Absorptive ND Filter; Optical Density 2.0
- Type
- Filter
- Subtype
- Neutral Density Filter
- Brand
- Thorlabs
Properties
- Shape
- Circular
- Diameter
- 50.8 mm
Material
- Name
- N-BK7
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.5150823520020043
- λ
- 633 nm
- B1
- 1.03961212
- C1
- 0.00600069867 μm2
- B2
- 0.231792344
- C2
- 0.0200179144 μm2
- B3
- 1.01046945
- C3
- 103.560653 μm2
NE2R20B Dia. 2 in Absorptive ND Filter; Optical Density 2.0
The NE2R20B is a Neutral Density Filter from Thorlabs, designed with a circular base shape and a diameter of 50.8 mm. This filter is made of n-bk7 schott material and has a thickness of 1.4 mm, making it an ideal choice for various optical applications.
The NE2R20B features a Thin Lens shape and is coated with tho ne20a on both the front and back, providing excellent absorptive properties. The optical density of this filter is 2.0, which is achieved at a wavelength of 633 nm.
Thorlabs, the vendor, provides a valid weblink, indicating that the NE2R20B is in stock. For more information, users can visit the provided weblink: https://www.thorlabs.com/thorproduct.cfm?partnumber=NE2R20B
