L-PCX338 66 mm Dia. Plano-Convex Lens; EFL=300mm Uncoated

The L-PCX338 is a Plano-Convex lens with a diameter of 66 mm, sourced from the reputable vendor Ross Optical. This lens is specifically designed for use in optical systems requiring 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 300mm, making it suitable for use in systems where a long focal length is required. The EFL is a critical parameter in lens selection, as it directly influences the lens's ability to focus light. A longer EFL, like that of the L-PCX338, can provide a narrower field of view and higher magnification.

The lens is made from N-BK7 Schott glass, a common material in optical systems due to its excellent optical properties. This material ensures high transmittance across a wide spectrum, making the lens suitable for use with various wavelengths.

The geometry of the lens includes a thickness of 3mm at the edge and 6.5mm at the center. The inner and outer radii are 0, indicating a sharp transition between the flat and curved surfaces. The radius of curvature (R1) is 155.04mm, and the back focal length (BFL) is 296.83mm.

Notably, this lens is uncoated. Coatings are often applied to lenses to reduce surface reflections, increase transmittance, or provide other desirable optical properties. However, an uncoated lens can be advantageous in certain applications, such as when cost or simplicity is a primary concern.