This is a Plano-Convex Lens, sourced from the renowned optical components vendor, Edmund Optics. The lens, identified by the product code 88-889-INK, is a spherical lens with a base shape of a circle. It has a diameter of 25.0mm and a thickness at the edge of 2.49mm, while the center thickness is 3.5mm. The effective focal length (EFL) of this lens is 150.0mm.
The lens is made of N-BK7 Schott, a popular optical glass due to its excellent optical properties and relatively low cost. The front and back surfaces of the lens are coated with YAG-BBAR, a type of coating that enhances the lens's performance in the wavelength range of 500-1100nm. This coating, specifically the one from Edmund Optics (edm yagbbar 5001100), is designed to increase the lens's durability and improve its light transmission capabilities.
The lens is currently in stock and can be purchased directly from the Edmund Optics website using the provided weblink. This lens is a versatile optical component, suitable for a wide range of applications that require a plano-convex lens with these specifications.