This is a high-quality spherical lens, specifically a symmetric convex-convex lens, sourced from Qioptiq Photonics. It boasts a base shape of a circle and is mounted on UVFS (Ultra-Violet Fused Silica). The lens has a diameter of 31.5 mm, with a thickness at the edge of 2.2 mm and a center thickness of 7.3 mm. The effective focal length (EFL) of this lens is 50mm, making it suitable for a wide range of optical applications.
The lens's front and back surfaces are coated with "qio bbar arb2nirnbk7", a coating type that enhances the lens's performance in specific wavelength ranges. In this case, the lens is designed to operate effectively in the 355nm wavelength range.
The lens's geometry is defined by its inner and outer radii, which are 0 in this case, and its curvature radii (R1 and R2), which are 49.581mm and -49.581mm respectively. This specific curvature allows for a double-convex lens, which is often used to focus light.
The lens is currently in stock and available for purchase on the Qioptiq Photonics website. For more detailed information, you can refer to the provided weblink.