This is a G052123400 12.5 mm Dia. UVFS Mounted Plano-Convex Lens, with a focal length (EFL) of 25mm, sourced from Qioptiq Photonics. The lens is spherical in shape and made of UVFS material with the Mal-1965 index. It is designed for use with a wavelength of 355nm and features a Qio Silver RAGV 45 coating on both the front and back surfaces.
The lens has a base shape of a circle, with a diameter of 12.5mm. The edge thickness is 1.3mm, while the center thickness is 3mm. The inner and outer radii are both zero, and the radius of curvature (R1) is 12.589mm.
This lens is currently in stock and available for purchase on the Qioptiq Photonics website. For more detailed information and specifications, please refer to the provided weblink.