This is a 34-137 12mm Dia. x 50mm FL Fused Silica Plano-Convex Lens, designed for use with a wavelength of 1064nm 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 base shape that is Circular. The geometry of the lens includes a diameter of 12mm, a thickness at the edge of 2.1mm, and a thickness at the center of 2.9mm. The Effective Focal Length (EFL) of the lens is 50mm, and the Radius of Curvature (R1) is 22.92mm. The Back Focal Length (BFL) of the lens is 48.01mm.
The lens is made from Fused Silica, specifically from the material ID fused sil mal-1965. This material is known for its excellent optical properties and durability.
The lens features a coating on both the front and back. The coating is a Laser V-Coat, specifically designed for use with a wavelength of 1064nm. This coating enhances the lens's performance and durability, making it ideal for use in a variety of optical applications.