The 45-474 is a Plano-Convex lens, a type of spherical lens, sourced from Edmund Optics. This lens boasts a 9.0mm diameter and a focal length of 9.0mm, making it a versatile choice for various optical applications. The lens is fabricated from n-SF11 Schott, a high-index glass with excellent transmittance in the visible to near-infrared spectrum, specifically designed for use in the 400-1000nm range.
The lens features a front and back coating of edm visnir0sp2002000, a VIS-NIR coating that enhances its performance by reducing surface reflections and improving transmission. This coating is particularly beneficial when the lens is used in systems where high transmission and low reflectance are critical.
The geometry of the lens is well-defined, with a thickness at the edge of 1.38mm and a center thickness of 3mm. The lens's inner and outer radii are both zero, indicating a plano surface on one side and a curved surface on the other. The radius of curvature of the curved surface is 7.06mm, and the back focal length is 7.32mm.