The 69-542 is a high-quality Plano-Convex spherical lens, boasting a 10.0mm diameter and a focal length of 20.0mm, specifically designed for use with a 980nm wavelength. This lens is sourced from the renowned optical vendor, Edmund Optics, ensuring reliability and top-tier performance.
The lens is crafted from the esteemed N-BK7 glass from Schott, a material known for its excellent optical properties and versatility. The lens features a plano surface on one side and a convex surface on the other, with a center thickness of 18.03mm and an edge thickness of 1.74mm. The effective focal length (EFL) is 20.0mm, and the radius of curvature (R1) of the convex surface is 10.34mm.
The 69-542 lens is equipped with a front and back coating of Edmund Optics' Las V-Coat 980, a specialized coating designed to enhance performance in laser applications. This coating ensures high transmission and low reflection at the specified 980nm wavelength, making it ideal for use in laser systems.
Please note that the lens has no inner or outer radius, indicating a uniform thickness across the lens. This feature, combined with its high-quality construction and specialized coating, makes the 69-542 an excellent choice for a wide range of optical applications.