The 88-820-INK is a Plano-Convex lens, a type of spherical lens, sourced from Edmund Optics. This lens, with a diameter of 9.0mm, is designed for use in the visible light spectrum, specifically at a wavelength of 587.6nm. The lens has a front and back coating of YAG-BBAR, which is optimized for use in the 500-1100nm range, making it suitable for a wide range of optical applications.
The lens has a thickness of 1.78mm at the edge and 2.0mm at the center, with an effective focal length (EFL) of 90.0mm. The radius of curvature for the first surface (R1) is 46.51mm, and the back focal length (BFL) is 88.68mm. The lens is made of N-BK7 Schott, a popular optical glass due to its excellent optical properties and relatively low cost.
The 88-820-INK is currently in stock, according to the vendor's website, and is available for immediate purchase. This lens is a versatile and high-quality option for those in need of a Plano-Convex lens with YAG-BBAR coating for use in the visible light spectrum.