LB4030-UV 25.4 mm Dia. UVFS Double-Convex Lens; EFL=40mm 245-400nm

The LB4030-UV is a double-convex lens with a diameter of 25.4 mm, designed for use in the ultraviolet spectrum. This lens, sourced from Thorlabs, features an effective focal length (EFL) of 40mm and is designed for use with wavelengths between 245 and 400nm.

The lens is made from UVFS, a material with a refractive index that is well-suited to ultraviolet applications. The front and back surfaces of the lens are coated with a UV-enhanced broadband antireflection (BBAR) coating, which reduces surface reflections and increases transmission in the UV range.

The lens has a center thickness of 6.7mm and an edge thickness of 2mm, providing robustness and durability. The radii of curvature for the front and back surfaces are 35.7mm and -35.7mm, respectively, indicating a strongly converging lens. The lens has no inner or outer radius, indicating a uniform curvature across the entire surface.

This lens is a great choice for applications that require high-quality imaging in the ultraviolet range, such as UV microscopy, spectroscopy, or other UV-based optical systems. It is available for purchase directly from Thorlabs, and the provided weblink provides up-to-date information on its availability and pricing.