This product is a Spherical Lens (Convex-Convex) type, specifically a Double-Convex Lens, sourced from the reputable vendor, Laser Components. The lens has a base shape of a circle and a diameter of 15.0 mm. The thickness at the edge of the lens is 2.2 mm, while the thickness at the center is 2.7 mm. The effective focal length (EFL) of the lens is 100 mm.
The lens features inner and outer radii of 0 mm, with radii of curvature R1 and R2 being -102.6 mm and 102.6 mm respectively. This particular lens is made of n-bk7 schott material and is designed to work optimally with a wavelength of 633 nm. The lens does not have any coating, as indicated in the item data.
For more detailed information, please refer to the datasheet provided by the vendor at https://www.lasercomponents.com/fileadmin/user_upload/home/Datasheets/lc-optics/substrates/biconvex_biconcave_lenses.pdf. The link is valid and the product is in stock, according to the item data.