This is a Plano-Convex lens, sourced from the reputable optical vendor, Edmund Optics. The lens, identified as the 38-311-INK, is a Spherical Lens with a Sub Type of Spherical Lens (Plano-Convex). It boasts a circular base shape and comes with a comprehensive set of geometric specifications.
The lens has a diameter of 15.0mm, with a thickness at the edge of 1.4mm and a thickness at the center of 3.8mm. The Effective Focal Length (EFL) is 25.0mm, and the Radius of Curvature (R1) is 12.92mm. The Back Focal Length (BFL) is 22.5mm, and both the Inner and Outer Radius are 0mm.
The lens is made from the material n-bk7 schott, a popular choice in the optical industry due to its excellent optical properties. It is designed to work within the wavelength of 587.6nm.
The lens features a coating on both the front and back, specifically the edm vis-0 std curve. This coating is standard for Edmund Optics and is designed to enhance the lens's performance within the specified wavelength range.