13-012 25 mm Dia. N-BK7/N-SF5 Mounted Achromatic Doublet; EFL=175mm MgF2 400-700nm

The 13-012 is a high-quality mounted achromatic doublet lens, sourced from the renowned optical vendor, Edmund Optics. This lens is designed with a base shape of 25 mm diameter and features an effective focal length (EFL) of 175mm, specifically coated with MgF2 for the wavelength range of 400-700nm.

The lens is composed of two primary materials, N-BK7 and N-SF5, both from Schott, ensuring superior optical performance. The N-BK7, a borosilicate crown glass, is known for its low dispersion and excellent homogeneity, while the N-SF5, a fluorite crown glass, offers a high Abbe number and low refractive index.

The geometry of the lens is meticulously crafted, with an edge thickness of 7.94mm, a center thickness of 6mm, and a center thickness 'a' of 3mm. The lens curvature is defined by radii r1, r2, and r3, which are 109.16mm, -79.38mm, and -226.03mm respectively. The lens is designed as a multiplet, offering a unique optical solution.

The lens is coated with Edmund Optics' standard MgF2 coating on both the front and back surfaces, providing excellent transmission and durability. The weblink provided leads to the product page on Edmund Optics' website, where users can find more information and purchase the lens. The link is valid and indicates that the lens is in stock, ensuring quick delivery.