This is a 34-166 25mm Dia. x 100mm FL UV Plano-Convex Lens, designed for use with a 1550nm wavelength and featuring a Laser V-Coat. The lens is sourced from the reputable vendor, Edmund Optics.
The lens is a Spherical Lens of the Plano-Convex type, featuring a circular base shape. The diameter of the lens is 25mm, with a thickness at the edge of 2.05mm and a thickness at the center of 3.79mm. The Effective Focal Length (EFL) of the lens is 100mm, and the Radius of Curvature (R1) is 45.85mm. The Back Focal Length (BFL) of the lens is 97.4mm, and both the Inner and Outer Radius are 0mm.
The lens is made from Fused Silica (Mal-1965), a material known for its excellent optical properties and durability. The lens features a Laser V-Coat on both the front and back, specifically designed for use with a 1550nm wavelength. This coating enhances the lens' performance and durability, making it ideal for use in demanding optical applications.