This is a G052122322 12.5 mm diameter Plano-Convex lens, mounted on UVFS, with a focal length of 20mm and designed for use within the wavelength range of 450-700nm. The lens is sourced from the reputable vendor, Qioptiq Photonics.
The lens is spherical in shape, with a base shape of a circle. It has a diameter of 12.5mm, a thickness at the edge of 1.3mm, and a center thickness of 3.5mm. The lens's effective focal length (EFL) is 20mm, and the radius of curvature (R1) is 10mm. The inner and outer radii are both 0mm, indicating a plano surface on one side of the lens.
The lens is made from UVFS material with the ID 'uvfs mal- 1965'. It features broadband anti-reflection coatings on both the front and back surfaces, specifically 'qio bbar arb2visnbk7'. These coatings are designed to reduce surface reflections and increase transmission within the specified wavelength range.
The lens is currently in stock and available for purchase. For more information, please refer to the vendor's website at https://www.qioptiq-shop.com/en/Precision-Optics/Singlets/Plano-Convex-Lenses/Plano-convex-lenses-mounted-fused-silica.html.