ND2R20A Dia. 50 mm Reflective ND Filter; SM2-Threaded Mount; Optical Density 2.0
- Type
- Filter
- Subtype
- Neutral Density Filter
- Brand
- Thorlabs
Properties
- Shape
- Circular
- Diameter
- 50 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
ND2R20A Dia. 50 mm Reflective ND Filter; SM2-Threaded Mount; Optical Density 2.0
The ND2R20A is a Neutral Density Filter with a diameter of 50 mm, manufactured by Thorlabs. This filter is designed to reduce the intensity of incident light without altering its color composition, making it an ideal tool for various optical applications. The filter features a uniform optical density of 2.0, which translates to a reduction of 100 times the original light intensity.
The ND2R20A is constructed from N-BK7 Schott glass, a material known for its excellent optical properties and durability. The filter's geometry includes a thickness of 2 mm, contributing to its robustness and overall performance. The front and back surfaces of the filter are coated with THo ND20, a specialized coating that enhances the filter's light reduction capabilities.
This filter is designed with a Thin Lens shape, which is characterized by a flat front surface and a curved back surface. This shape allows for easy integration with other optical components in a system. The filter is mounted with an SM2-threaded mount, providing a secure and stable connection.
The ND2R20A is currently in stock and available for purchase through the Thorlabs website. For more information, please refer to the provided weblink.