The 89-276 is a high-quality double-convex lens, boasting a diameter of 30mm and a focal length of 30mm. This lens is sourced from the renowned optical vendor, Edmund Optics, and is currently in stock, ready for immediate use.
The lens is constructed from n-SF11 Schott, a material known for its excellent optical properties. It features a front and back coating of EDM YAGBBAR 500-1100, which enhances its performance within the wavelength range of 500-1100nm. This coating is specifically designed to reduce reflection and increase transmission, making it ideal for a wide range of optical applications.
The geometry of the lens is meticulously designed, with an edge thickness of 1.43mm and a center thickness of 6.5mm. The lens's effective focal length (EFL) is 30mm, and it has a back focal length (BFL) of 28.12mm. The first and second radii of curvature are 45.61mm and -45.61mm, respectively.