This is a G311209525 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 a valid web link provided for easy accessibility.
The lens is of the Spherical type, with a Sub Type of Spherical Lens (Convex-Convex). It has a Base Shape of Circular, and a diameter of 22.4 mm. The lens's thickness at the edge is 1.6 mm, while its thickness at the center is 4.2 mm. The Effective Focal Length (EFL) of the lens is 50 mm.
The lens's first radius of curvature (r1) is 49.403, and its second radius of curvature (r2) is -49.403. The Inner Radius and Outer Radius are both 0, indicating a symmetrical lens design.
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.