49-847 25.4mm Dia. x 25.4mm FL; Uncoated; Plano-Convex Lens

The 49-847 is a Plano-Convex lens with a diameter of 25.4mm and a focal length of 25.4mm, making it a versatile choice for various optical applications. This lens is sourced from the reputable vendor, Edmund Optics, and is currently in stock, as indicated by its weblink status.

The lens is made of n-sf11 Schott material, a high-index glass often used in high-performance optical systems due to its excellent optical properties. The Plano-Convex geometry, where one side is flat and the other is curved, is a common design for lenses, providing a wide range of focusing capabilities.

The lens has a center thickness of 7mm and an edge thickness of 2.43mm, offering a balance between weight and optical performance. The effective focal length (EFL) is 25.4mm, which, combined with the lens's diameter, results in a high numerical aperture (NA), enhancing the lens's light-gathering capability.

The lens's inner and outer radii are both zero, indicating a sharp curvature on the convex side. This curvature, along with the 19.93mm radius of curvature (R1), contributes to the lens's focusing power. The back focal length (BFL) is 21.48mm, which is the distance from the lens's rear surface to its focal point.

Notably, this lens is uncoated. While coatings can enhance a lens's performance by reducing reflections, increasing transmission, or providing other benefits, an uncoated lens can be a cost-effective choice for applications where such enhancements are not required.