62-475 12.5 mm Dia. N-BAF10/N-SF10 Negative Achromatic Doublet; EFL=-20mm MgF2 400-700nm

This is a 12.5 mm diameter Negative Achromatic Doublet lens, model 62-475, sourced from the renowned optical vendor, Edmund Optics. The lens is a multiplet, designed with a negative focal length of -20mm, making it suitable for a wide range of optical applications.

The lens is composed of two types of glass, N-BAF10 and N-SF10, both from Schott. These materials are known for their high refractive indices and low dispersions, contributing to the lens's excellent optical performance. The lens's geometry is meticulously designed, with an inner radius of 0 and an outer radius of 0, ensuring optimal light transmission and minimal distortion.

The lens features a front and back coating of edm mgf2 std curve, providing enhanced durability and improved light transmission. The lens's thickness varies, with an edge thickness of 7.01mm, a center thickness of 2mm, and a center 'a' thickness of 3.5mm. This variation in thickness contributes to the lens's ability to correct chromatic aberration and deliver sharp, clear images.

The lens is currently in stock and available for purchase through the Edmund Optics website. For more detailed specifications and purchasing information, please visit the provided weblink: https://www.edmundoptics.com/p/125mm-dia-x20mm-fl-negative-doublet-lens-mgfsub2sub-coated/17085/.