This is a G063854331 25.4 mm Dia. N-BK7 Mounted Double-Convex Lens, designed with an effective focal length (EFL) of 100mm. The lens is sourced from Qioptiq Photonics, a reputable vendor known for precision optics.
The lens is of the Spherical type, specifically a Spherical Lens (Convex-Convex) with a base shape of Circular. It has a diameter of 25.4mm, with a thickness at the edge of 5.4mm and a center thickness of 7mm. The first radius of curvature (r1) is 102.92, while the second radius of curvature (r2) is -102.92. The lens does not have an inner or outer radius.
The lens is made from N-BK7 Schott, a popular material in the optical industry due to its excellent optical properties. The lens is designed to operate at a wavelength of 587.6nm. It comes with a coating on both the front and back, specifically Qio Al Ralvis Aoi 45.
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/Symmetric-Convex-Lenses/Symmetric-convex-lenses-mounted.html.