The 49-987 is a UV-AR coated, UV double-convex lens, sourced from Edmund Optics. This lens boasts a 6mm diameter and a focal length of 18mm, making it suitable for a wide range of applications. The lens is constructed with a base shape of a circle, and its geometry includes an edge thickness of 1.44mm and a center thickness of 2mm. The effective focal length (EFL) is 18mm, while the back focal length (BFL) is 17.3mm.
The lens is made from fused silica, identified as mal-1965 in the Material ID. The wavelength for this lens is 587.6nm. The coating on both the front and back of the lens is the standard curve for UV-AR, providing excellent protection and performance in the UV-AR range of 250-425nm.
This lens is a spherical type, with the first radius of curvature (R1) at 16.18mm and the second radius of curvature (R2) at -16.18mm. The inner and outer radii are both 0mm. The lens is in stock and available for immediate purchase through the provided weblink.