Bi-Convex Focusing Lens, 38.1 mm, Fused Silica, 51 mm EFL, Uncoated

The 39323 Focusing Lens is used with the 77259 Focusing Lens Assembly. It is a 1.5 inch (38.1 mm) diameter, UV Fused Silica, Bi-convex Lens with a 51 mm Focal Length. Bi-convex lenses are for imaging with little change in magnification. 190 to 2500 nm wavelength range.