This is a Plano-Convex Lens, type Lens, sourced from the reputable vendor Standa. The lens is spherical in shape and has a base shape of Circular. It is designed for use with a wavelength of 355 nm and is uncoated.
The lens has a diameter of 38.1 mm and a thickness at the edge of 2.5 mm. The thickness at the center is 4 mm. The effective focal length (EFL) of the lens is 300 mm. The radius of curvature (R1) is 142.822 mm, and the inner and outer radii are 0 mm.
The lens is made from UVFS Mal- 1965, a material specifically designed for optical applications. The lens is part of Standa's extensive catalog of optical elements, and the link to the product page on their website is provided for further information and availability.