This is a Plano-Convex lens, sourced from the reputable optical vendor, Edmund Optics. The lens, identified as item number 38-317, is designed for use within the visible light spectrum, specifically between 425-675nm. The lens's base shape is circular, with a diameter of 25.4mm, making it suitable for a wide range of optical applications.
The lens's geometry is defined by a 1.69mm edge thickness and a 6.9mm center thickness. The effective focal length (EFL) is 35mm, and the radius of curvature (R1) is 18.09mm. The back focal length (BFL) is 30.46mm, and both the inner and outer radii are 0mm.
The lens is made from N-BK7 Schott, a popular optical glass due to its excellent optical properties and versatility. The lens's coating is "edm vis-0 std curve" on both the front and back surfaces, enhancing its performance within the specified wavelength range.