48-278 25mm Dia. x 150mm FL Uncoated; UV Plano-Convex Lens

The 48-278 is a 25mm diameter, 150mm focal length uncoated plano-convex lens, specifically designed for UV applications. Sourced from the renowned optical vendor, Edmund Optics, this lens is a reliable choice for various optical systems.

The lens's geometry is characterized by a 25mm diameter, a 2.04mm edge thickness, and a 3.18mm center thickness. The effective focal length (EFL) is 150mm, and the radius of curvature (R1) is 68.79mm. The back focal length (BFL) measures 147.82mm, and both the inner and outer radii are 0mm, indicating a planar surface on one side.

This lens is made of fused silica (mal-1965), a material known for its excellent transparency in the ultraviolet region. The wavelength specified for this item is 587.6nm, which falls within the visible light spectrum. However, the lens's UV transmission capabilities make it suitable for ultraviolet applications.

The lens does not come with any coating, as indicated in the item data. While coatings can enhance lens performance by reducing reflections, increasing transmission, or providing environmental protection, an uncoated lens can be a cost-effective choice for certain applications.