This is a Plano-Convex lens, type of spherical lens, sourced from Edmund Optics with a circular base shape and a diameter of 25.0mm. The lens has a thickness of 2.82mm at the edge and 3.2mm at the center, with an effective focal length (EFL) of 400.0mm. The radius of curvature (R1) is 206.72mm, and the back focal length (BFL) is 397.89mm. The lens does not have an inner or outer radius.
The lens is made of N-BK7 Schott material, a popular choice for optical elements due to its excellent optical properties. The wavelength for this lens is 587.6nm.
The lens is coated with YAG-BBAR on both the front and back, specifically the EDM YAGBBAR 500-1100 coating. This coating is designed for use in the 500-1100nm wavelength range, making it suitable for a wide range of applications.
The item is currently in stock and available for purchase, as indicated by the "weblink status" field in the item data.