LA1951-AB 25.4 mm Dia. N-BK7 Plano-Convex Lens; EFL=25.4mm 400-1100nm

The LA1951-AB is a 25.4 mm diameter Plano-Convex lens made from N-BK7 Schott glass, sourced from the reputable optical components manufacturer, Thorlabs. This lens is designed for use within a broad wavelength range, from 400 to 1100 nanometers, making it a versatile choice for various applications.

The lens features an effective focal length (EFL) of 25.4 mm, providing a precise focus for your optical system. Its geometry includes a 1.8 mm thickness at the edge and a center thickness of 11.7 mm, contributing to its overall optical performance. The front and back surfaces of the lens are coated with THo AB Bbar, a broadband anti-reflection coating that reduces surface reflections and increases transmission within the specified wavelength range.

The lens's base shape is circular, and its surface is spherical, which is a common and reliable choice for many optical applications. The curvature of the lens is defined by a radius of 13.1 mm on the convex side, while the plano side has an infinite radius. This particular lens does not have an inner or outer radius, as it is a simple Plano-Convex design.