This is a G311300331 10 mm Dia. N-BAK4 Double-Convex Lens, with an effective focal length (EFL) of 10mm, sourced from Qioptiq Photonics. The lens is a spherical design, featuring a symmetric convex-convex shape, and has a base shape of a circle.
The lens has a diameter of 10mm, with a center thickness of 3.5mm and an edge thickness of 1mm. The inner and outer radii are both 0mm. The curvature radii of the lens are r1 = 10.669mm and r2 = -10.669mm.
The lens is made of N-BAK4 material, specifically from Schott. It is designed to operate at a wavelength of 587.6nm. The lens features a coating on both the front and back surfaces, specifically Qio AR AL RALVIS AOI 45.
The lens is currently in stock and available for purchase. More information, including pricing and availability, can be found on the Qioptiq Photonics website.