21-908 12.5mm Dia. UVFS Aspheric Lens; EFL=10mm; NA=0.58 UV 250-425nm

This is a high-quality aspheric lens from the renowned optical vendor, Edmund Optics. The lens, catalog number 21-908, is a UVFS (UV fused silica) lens with a diameter of 12.5mm and a numerical aperture (NA) of 0.58. It is designed for use in the ultraviolet spectrum, specifically between 250nm and 425nm.

The lens features an effective focal length (EFL) of 10mm, making it suitable for applications that require a compact, high-performance optical component. The aspheric design of the lens helps to reduce spherical aberration, improving the overall image quality.

The lens is made from high-purity fused silica, a material known for its excellent transparency in the UV range. This, combined with the UV-AR coating on both the front and back surfaces, ensures high transmission and low absorption in the specified wavelength range.

The lens has a thickness of 3.72mm at the edge and 9.5mm at the center. The front and back surfaces have radii of curvature of 5.155999934003201mm and 25.219mm, respectively. The lens also has a high damage threshold, making it suitable for use in high-power applications.

The lens is currently in stock and can be purchased directly from the Edmund Optics website using the provided weblink.