L-PCX404 25 mm Dia. Plano-Convex Lens; EFL=140mm Uncoated

The L-PCX404 is a Plano-Convex lens with a diameter of 25 mm, sourced from the reputable optical vendor, Ross Optical. This lens is specifically designed for use in optical systems that require a convex lens with a flat surface on one side. The Plano-Convex design allows for a wide range of applications, including use as a focusing lens or a beam expander.

The lens has an effective focal length (EFL) of 140mm, making it suitable for use in systems where a longer focal length is required. The EFL is a critical parameter in lens selection, as it directly impacts the magnification and field of view of the optical system.

The lens is made from N-BK7 Schott glass, a common material in optical systems due to its excellent optical properties and high transmittance in the visible spectrum. The lens's geometry includes a thickness of 2mm at the edge and 3.1mm at the center, providing structural integrity and ensuring minimal distortion.

The lens's surface radii are 72.352mm for the curved surface and 0mm for the flat surface, contributing to its Plano-Convex shape. The back focal length (BFL) is 132.95mm, which is the distance from the rear surface of the lens to its focal point.

Notably, this lens is uncoated. While coatings can enhance the performance of lenses by reducing reflections and increasing transmittance, an uncoated lens can be advantageous in certain applications where specific reflection properties are desired.