The 47-898 is a high-quality double-convex lens, sourced from the renowned optical vendor, Edmund Optics. This lens boasts a 15mm diameter and a focal length of 22.5mm, making it suitable for a wide range of optical applications.
The lens is constructed from n-sf11 Schott, a material known for its excellent optical properties. The base shape of the lens is circular, and it features a standard spherical geometry. The inner radius of the lens is 0mm, while the outer radius is also 0mm, indicating a symmetrical design.
The lens features a double-convex shape, with radii of curvature of 34.36mm for the first surface and -34.36mm for the second surface. This design results in a back focal length of 21.29mm and an effective focal length of 22.5mm. The edge thickness of the lens is 2.54mm, while the center thickness is 4.2mm, providing robustness and durability.
The lens is coated with the EDM VIS-0 standard curve on both the front and back surfaces. This coating enhances the lens's performance in the visible light spectrum, specifically between 425nm and 675nm. The coating ensures high transmission and low reflection, making the lens ideal for use in imaging systems, beam shaping, and other applications where high-quality light transmission is crucial.