The 88-820 is a Plano-Convex lens, a type of spherical lens, sourced from Edmund Optics. This lens boasts a diameter of 9.0mm and a focal length of 90.0mm, making it a versatile choice for various optical applications.
The lens is made from n-bk7 schott, a popular optical glass due to its excellent optical properties and relatively low cost. The base shape of the lens is circular, contributing to its wide range of uses.
The geometry of the lens is well-defined, with a thickness at the edge of 1.78mm and a center thickness of 2.0mm. The effective focal length (EFL) is 90mm, and the radius of curvature (R1) is 46.51mm. The back focal length (BFL) is 88.68mm, and both the inner and outer radii are 0mm.
The lens features a YAG-BBAR coating on both the front and back surfaces. This coating, specifically designed for the wavelength range of 500-1100nm, enhances the lens's performance by reducing reflection and increasing transmission.
The lens is currently in stock, according to the vendor's website, making it an immediately available option for your optical needs.