48-326 25.0mm Dia. x -250 FL; UV-AR Coated; UV Plano-Concave Lens 250-425nm

The 48-326 is a UV Plano-Concave Lens, 25.0mm in diameter, with a focal length of -250mm, sourced from Edmund Optics. This lens is designed for use within the ultraviolet spectrum, specifically between 250-425nm, making it ideal for applications such as UV imaging, spectroscopy, and other UV-based research or industrial processes.

The lens is constructed from fused silica (mal-1965), a material known for its high transparency in the UV range, low auto-fluorescence, and excellent thermal shock resistance. The lens has a thickness of 3.15mm at the edge and 2.5mm at the center, providing a robust structure while minimizing unnecessary weight.

The 48-326 features a standard UV-AR coating on both the front and back surfaces. This coating enhances the lens's performance by reducing surface reflections and increasing transmission within the UV range. The coating is applied using Edmund Optics' standard curve, ensuring consistent performance and reliability.

The lens's geometry is spherical, with a radius of curvature of -114.61mm on the front surface. This results in a back focal length of -251.71mm, providing a well-defined focus point for your UV optical system. The lens has no inner or outer radius, indicating a uniform curvature across the entire surface.