The 11-719 is a 25.4mm diameter, plano-convex spherical lens with a focal length of 200mm, sourced from Edmund Optics. This uncoated lens is part of their ultrafast thin PCX series, designed for applications requiring high-performance, thin optical elements.
The lens's geometry includes a 0.72mm thickness at the edge, increasing to 1.6mm at the center, and a 91.8mm radius for the curved surface. The effective focal length (EFL) is 200mm, and the back focal length (BFL) is 199.12mm. The lens's inner and outer radii are both 0, indicating a planar back surface.
The lens is made from UVFS-MAL 1965, a material with a refractive index suitable for the specified wavelength of 587.6nm. The lack of coating suggests that this lens is intended for use in specific applications where anti-reflection or other coatings are not required or desired.
Please note that the provided web link indicates that this item is in stock, making it readily available for your optical design needs.