This is the BF-px-38.1-500, a 38.1 mm diameter Plano-Convex lens made from BaF2 (Barium Fluoride) material. The lens is sourced from Alkor Technologies and is currently in stock, as indicated by its valid weblink status.
The lens features a focal length of 500mm (EFL), making it suitable for applications that require long-distance focusing. The geometry of the lens includes a thickness of 2mm at the edge and 2.8mm at the center. The lens's inner and outer radii are both zero, indicating a plano surface on one side and a curved surface on the other.
The BF-px-38.1-500 is a spherical lens, meaning it has a single curvature throughout its surface. This type of lens is often used in applications where a simple, single-focusing element is required. The lens is uncoated, which means it does not have any additional layers to enhance its optical properties or protect it from environmental factors.
The lens is designed to work with a wavelength of 5000nm. It is made from BaF2, a material known for its excellent transparency in the ultraviolet, visible, and near-infrared regions of the spectrum. This makes it an ideal choice for applications that require high transmission in these wavelength ranges.