The KPX181AR.18 is a Plano-Convex Lens, a type of spherical lens, sourced from MKS/Newport. This lens, with a diameter of 50.8 mm, is designed for use in the infrared spectrum, specifically between 1000nm and 1550nm. The lens has a focal length of 75.6 mm, making it suitable for a variety of optical applications.
The lens is made from N-BK7 Schott, a popular optical glass due to its excellent optical properties and relatively low cost. The lens has a plano-convex geometry, meaning one side is flat (plano) and the other side is curved (convex). The curvature of the convex side is defined by a radius of 39.07 mm.
The KPX181AR.18 features a new AR-18 coating on both the front and back surfaces. This anti-reflective coating is designed to reduce surface reflections, thereby increasing the amount of light transmitted through the lens. The thickness of the lens at the edge is 3 mm, while the center thickness is 12.383 mm.
This lens is available for purchase directly from the vendor's website, where it is listed as in stock. The detailed specifications, including the lens's geometry and coating, make it a reliable choice for users in need of a high-quality, IR-transmitting lens.