The 49-466 is a high-quality double-convex lens, boasting a 9mm diameter and a focal length of 18mm. This lens is sourced from the renowned optical vendor, Edmund Optics, and is available in stock for immediate use. The lens is designed for use within the near-infrared spectrum, specifically between 600 and 1050nm, making it ideal for a wide range of applications in this wavelength range.
The lens is constructed from N-BK7 Schott, a popular optical glass due to its excellent optical properties and versatility. The front and back surfaces of the lens are coated with Edmund Optics' NIR I standard curve coating, which is specifically designed to enhance performance within the near-infrared spectrum. This coating aids in reducing surface reflections and increasing transmission, thereby improving the overall efficiency and quality of the optical system in which the lens is used.
The geometry of the lens is meticulously designed, with a central thickness of 2.6mm and an edge thickness of 1.47mm. The radii of curvature for the front and back surfaces are 18.15mm and -18.15mm, respectively, resulting in a back focal length of 17.12mm. The lens's shape is spherical, which is a common and reliable choice for many optical systems due to its ease of manufacture and good optical performance.