This is the G052202329 model from Qioptiq Photonics, a high-quality 8 mm diameter Double-Convex Lens. The lens is mounted and features an effective focal length (EFL) of 7mm, designed for use with a 1064nm wavelength.
The lens is constructed with N-BAK4 Schott material, a popular choice for its excellent optical properties and durability. It boasts a base shape of a circle, with a thickness at the edge of 1.1mm and a center thickness of 3.4mm. The lens's geometry is spherical, with inner and outer radii of 0mm, and radii of curvature of 7.499mm for both the front and back surfaces.
The G052202329 model comes with a coating on both the front and back surfaces. The coating is Qio HP Nbar Arhs-Yag, which is known for its high performance and resistance to environmental factors. This lens is designed for use in spherical applications and is currently in stock, as indicated by its weblink status.
For more information and specifications, please refer to the weblinks provided.