NE520A Dia. 0.5 in Absorptive ND Filter; SM05-Threaded Mount; Optical Density 2.0
- Type
- Filter
- Subtype
- Neutral Density Filter
- Brand
- Thorlabs
Properties
- Shape
- Circular
- Diameter
- 12.7 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
NE520A Dia. 0.5 in Absorptive ND Filter; SM05-Threaded Mount; Optical Density 2.0
The NE520A is a Neutral Density Filter from Thorlabs, designed with a circular shape and a diameter of 0.5 inches. It is made from n-bk7 schott material, a common choice for its excellent optical properties. The filter has a thickness of 1.4 mm, contributing to its durability and precision.
This filter features a Thin Lens shape, which is beneficial for maintaining optical quality and minimizing distortions. The front and back of the filter are coated with tho ne20a, a specialized coating that enhances the filter's performance and longevity.
The NE520A is part of Thorlabs' extensive catalog and is currently in stock. You can find more information and purchase this product at https://www.thorlabs.com/thorproduct.cfm?partnumber=NE520A. The webpage is valid and provides up-to-date information about the product's availability.
