AND-20C-25 20 mm Dia. Optical Glass Unmounted Visible Absorptive Neutral Density Filter 400-700nm
- Type
- Filter
- Subtype
- Neutral Density Filter
- Brand
- OptoSigma
Properties
- Shape
- Circular
- Diameter
- 20 mm
Material
- Name
- UVFS
- Dispersion Equation
- Sellmeier
- n (λ)
- 1.4599108862211283
- λ
- 550 nm
- B1
- 0.6961663
- C1
- 0.004679148 μm2
- B2
- 0.4079426
- C2
- 0.013512063 μm2
- B3
- 0.8974794
- C3
- 97.93400254 μm2
AND-20C-25 20 mm Dia. Optical Glass Unmounted Visible Absorptive Neutral Density Filter 400-700nm
OptoSigma's AND-20C-25 is a high-quality Neutral Density Filter, designed for use in the visible light spectrum, specifically between 400-700nm. This filter is unmounted, offering flexibility for integration into various optical systems.
The filter boasts a circular shape with a diameter of 20mm and a thickness of 2mm, making it a compact yet robust component for your optical setup. The base shape is a Thin Lens, ensuring minimal distortion and high optical performance.
The filter's coating is another notable feature. Both the front and back surfaces are coated with Opt AND-25, a specialized absorptive coating that provides excellent neutral density performance. This coating ensures consistent light absorption across the visible spectrum, resulting in accurate and predictable optical behavior.
The catalog number for this item is AND-20C-25, and it is currently in stock. For more information, you can visit the product page at https://www.optosigma.com/us_en/optics/filters/neutral-density-filters/absorptive-neutral-density-filter-unmounted-visible-round-20mm-25-AND-20C-25.html.