This product is a 36-722 18mm Dia x 27mm FL VIS 0° Coated; UV Plano-Convex Lens, sourced from the reputable optical components vendor, Edmund Optics. The lens is a Spherical Lens of the Plano-Convex type, featuring a base shape of Circular geometry.
The lens has a diameter of 18mm and a thickness at the edge of 1.62mm, while the thickness at the center is 5.5mm. The Effective Focal Length (EFL) of the lens is 27mm, and the Radius of Curvature (R1) is 12.38mm. The Back Focal Length (BFL) is 23.23mm, and both the Inner and Outer Radius are 0mm.
The lens is made from fused sil mal-1965 material and is designed to operate at a wavelength of 587.6nm. The lens features a coating on both the front and back surfaces, specifically the edm vis-0 std curve coating. This coating is standard for this type of lens and is designed to optimize its performance in the visible light spectrum (425-675nm).