The 88-873-INK is a Plano-Convex lens, a type of spherical lens, sourced from Edmund Optics. This lens, with a diameter of 20.0mm, is designed for use in the visible light spectrum, specifically at a wavelength of 587.6nm. The lens features a front and back coating of YAG-BBAR, which is optimized for use within the 500-1100nm range.
The lens's geometry includes a thickness of 1.22mm at the edge and 3.23mm at the center, with an effective focal length (EFL) of 50mm. The radius of curvature for the first surface (R1) is 25.84mm, and the back focal length (BFL) is 47.87mm. The lens is made from N-BK7 Schott, a popular optical glass due to its excellent optical properties and relatively low cost.
The YAG-BBAR coating on the lens enhances its durability and performance. This coating reduces reflection and increases transmission, making it ideal for applications that require high light transmission and minimal reflection. The coating is designed to work within the 500-1100nm range, making it suitable for a wide range of optical systems.