The 45-156 is a high-quality double-convex lens, boasting a 9mm diameter and a focal length of 27mm. This lens is sourced from the reputable vendor, Edmund Optics, and is currently in stock, as indicated by its weblink status.
The lens is made from the high-grade material, n-BK7 Schott, which is renowned for its excellent optical properties. The lens features a standard MgF2 coating on both the front and back surfaces, which enhances its performance across the visible spectrum, specifically between 400-700nm.
The geometry of the lens is meticulously designed, with a center thickness of 2.74mm and edge thickness of 2mm. The lens's inner and outer radii are 0, and its effective focal length (EFL) is 27mm. The radii of curvature for the first and second surfaces are 27.43mm and -27.43mm, respectively, while the back focal length (BFL) is 26.08mm.
This lens, with its spherical shape and circular base, is a versatile optical component, suitable for a wide range of applications. Its high-quality construction, advanced coating, and precise geometry make it an excellent choice for users seeking a reliable and efficient optical element.