KPX540 12.7 mm Dia. x 19.0 mm FL; Uncoated; Plano-Convex Lens

The KPX540 is a Plano-Convex lens with a diameter of 12.7 mm and a focal length of 19.0 mm, sourced from the reputable vendor MKS/Newport. This lens is made of N-BK7 Schott, a high-quality optical glass known for its excellent homogeneity and low optical dispersion.

The lens's geometry is meticulously designed, with a thickness of 3 mm at the edge and 5.33 mm at the center. The inner radius is 0, indicating a plano surface on one side and a curved surface on the other, with a radius of curvature of 9.81 mm. The back focal length (BFL) is 15.48 mm, and the effective focal length (EFL) is 19 mm.

The KPX540 is uncoated, meaning it does not have any anti-reflective or other coatings. This can be advantageous in certain applications where the natural properties of the glass are desired, or where cost considerations are a factor. However, it's important to note that uncoated lenses can suffer from increased reflection and reduced transmission, especially at larger angles or when used with broadband light sources.

This lens is ideal for use in a wide range of optical systems, including beam shaping, collimation, and focusing applications. It's particularly suitable for monochromatic light at a wavelength of 546.1 nm, although it can be used effectively across a broader spectrum with appropriate consideration for the potential impacts on transmission and reflection.