The 36-702 is a UV Plano-Convex Lens, 25mm in diameter and 40mm focal length, coated with UV-AR on both sides. This lens, sourced from Edmund Optics, is designed for use within the UV spectrum, specifically between 250-425nm. The lens features a fused silica material (mal-1965) and a spherical shape, with a planar surface on one side and a convex surface on the other.
The lens's geometry includes a 25mm diameter, a 2.58mm edge thickness, and a 7.5mm center thickness. The inner radius is 0mm, and the outer radius is also 0mm, indicating a sharply curved convex surface. The lens's effective focal length (EFL) is 40mm, and the back focal length (BFL) is 34.86mm. The radius of curvature (R1) is 18.34mm.
The lens's coating, UV-AR, is applied to both the front and back surfaces. This coating is standard for Edmund Optics and is designed to reduce reflection and increase transmission within the UV spectrum. The coating is part of the UV-AR curve, which is not specified further in the data provided.