This is a G063316329 18 mm Dia. UVFS Mounted Double-Convex Lens, specifically designed for use with a 1064nm wavelength. The lens is sourced from Qioptiq Photonics, a renowned vendor in the field of precision optics.
The lens is of the Spherical type, with a Sub Type of Spherical Lens (Convex-Convex). It features a Base Shape of Circular, and its geometry includes a diameter of 18 mm, a thickness edge of 1.4 mm, and a thickness center of 5.8 mm. The Effective Focal Length (EFL) of the lens is 20 mm, and it has a front curvature radius (r1) of 19.668 mm and a back curvature radius (r2) of -19.668 mm. The lens does not have an Inner Radius or an Outer Radius.
The lens is made from UVFS material with the ID "uvfs mal- 1965". It is coated with Qio HP Nbar Arhs-Yag on both the front and back, making it suitable for use in a variety of optical applications.
Please note that the weblink https://www.qioptiq-shop.com/en/Precision-Optics/Singlets/Symmetric-Convex-Lenses/Symmetric-convex-lenses-mounted-fused-silica.html is a valid link to the product on the vendor's website, and the product is currently in stock.