The 49-904-INK is a Plano-Convex lens, a type of spherical lens, sourced from Edmund Optics. This lens, with a diameter of 6.0mm, is designed for use in the near-infrared spectrum, specifically between 600-1050nm, as indicated by its NIR I coating.
The lens features a front and back coating of edm nir-i std curve, which is Edmund Optics' standard curve for near-infrared applications. This coating enhances the lens' performance in the NIR spectrum, making it suitable for a wide range of applications in this region.
The lens has a thickness of 1.68mm at the edge and 2.5mm at the center. The effective focal length (EFL) is 7.5mm, and the radius of curvature (R1) is 5.89mm. The back focal length (BFL) is 6.1mm, and the lens does not have an inner or outer radius.
The lens is made from n-sf11 Schott, a high-index glass with excellent transmission properties in the NIR region. This material makes the lens suitable for use in high-performance optical systems that require a wide range of transmission in the NIR spectrum.