FND-20C02-50 20 mm Dia. Unmounted N-BK7 Visible Reflective Neutral Density Filter; t=2mm 400-700nm
- Type
- Filter
- Subtype
- Neutral Density Filter
- Brand
- OptoSigma
Properties
- Shape
- Circular
- Diameter
- 20 mm
Material
- Name
- N-BK7
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.5185223876207927
- λ
- 550 nm
- B1
- 1.03961212
- C1
- 0.00600069867 μm2
- B2
- 0.231792344
- C2
- 0.0200179144 μm2
- B3
- 1.01046945
- C3
- 103.560653 μm2
FND-20C02-50 20 mm Dia. Unmounted N-BK7 Visible Reflective Neutral Density Filter; t=2mm 400-700nm
The FND-20C02-50 is a high-quality Neutral Density Filter, unmounted with a 20 mm diameter and a thickness of 2mm. This filter is designed for use in the visible spectrum, specifically between 400-700nm, making it ideal for a wide range of optical applications.
The filter is made from N-BK7, a type of borosilicate glass manufactured by Schott AG, known for its excellent optical properties. This material is often used in high-precision optical systems due to its low coefficient of thermal expansion and high homogeneity.
The filter features a reflective coating, Opt FND-50, on both the front and back surfaces. This coating is designed to maintain neutrality across the visible spectrum, ensuring that the filter does not introduce any color casts into the optical path.
The filter's geometry is defined by its thin lens shape, which helps to minimize optical aberrations. This, combined with its robust construction, makes the FND-20C02-50 suitable for use in demanding environments.
The filter is sourced from OptoSigma, a leading vendor in the field of optical components. It is currently in stock and available for purchase through their website, with the catalog number FND-20C02-50.
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