This is a G052204331 12.5 mm Dia. N-BK7 Mounted Double-Convex Lens, with a focal length (EFL) of 12.5mm, sourced from Qioptiq Photonics. The lens is currently in stock and available for purchase through their website.
The lens is a Spherical Lens of the Sub Type Symmetric-Convex, featuring a Base Shape of Circular geometry. It has a diameter of 12.5mm, with a thickness at the edge of 1mm and a center thickness of 4.5mm. The first radius of curvature (r1) is 11.971, while the second radius (r2) is -11.971. The Inner and Outer Radius are both 0.
The lens is made of N-BK7 Schott, a popular optical glass known for its excellent optical properties. It is designed to operate at a wavelength of 587.6nm. The lens features a front and back coating of qio al ralvis aoi 45, which enhances its performance and durability.
Please note that the description is based solely on the provided data and does not include any additional assumptions or information. For more detailed specifications or to purchase the lens, please visit the vendor's website using the provided weblink.