This is a G312413525 Plano-Convex Lens, a high-quality optical component sourced from Qioptiq Photonics. The lens, which is unmounted and made of fused silica, has a diameter of 31.5 mm and a thickness of 2 mm at the edge, increasing to 6.4 mm at the center. The effective focal length (EFL) of this lens is 60 mm, making it suitable for a wide range of optical applications.
The lens is designed to work within the wavelength range of 725-1050 nm, with a peak wavelength of 355 nm. It features a front and back coating of Qio Bbar Arb2nirnbk7, which enhances its performance and durability. The lens's shape is spherical, and it is available in a circular base shape.
For more detailed information, please refer to the vendor's website at https://www.qioptiq-shop.com/en/Precision-Optics/Singlets/Plano-Convex-Lenses/Plano-convex-lenses-unmounted-fused-silica.html. The link provides current stock availability and further specifications.