This is a G311208525 22.4 mm Dia. UVFS Double-Convex Lens, specifically designed for use in the ultraviolet to near-infrared spectrum, with a wavelength of 355 nm. The lens is sourced from the reputable vendor Qioptiq Photonics, and is currently in stock with valid weblinks provided for further information.
The lens is of the Spherical type, with a Sub Type of Spherical Lens (Convex-Convex). It has a base shape of Circular, and its geometry includes a diameter of 22.4 mm, a thickness edge of 1.7 mm, and a thickness center of 4.9 mm. The effective focal length (EFL) is 40 mm, and the radii of curvature are r1 = 39.525 mm and r2 = -39.525 mm. The Inner Radius and Outer Radius are both 0 mm.
The lens is made from UVFS material, specifically identified as UVFS Mal- 1965. It features a coating on both the front and back, specifically Qio Bbar Arb2nirnbk7. This coating is designed to enhance the lens' performance in the ultraviolet to near-infrared spectrum.