21-944 50mm Dia. UVFS Aspheric Lens; EFL=100mm; NA=0.23 UV 250-425nm

This product is a high-quality aspheric lens, catalog number 21-944, offered by the renowned optical vendor, Edmund Optics. The lens boasts a diameter of 50mm and a numerical aperture (NA) of 0.23, making it suitable for a wide range of applications.

The lens is crafted from HPFS7980 Corning, a material known for its exceptional optical properties. It is designed for use with a wavelength of 355nm, and its geometry includes an inner radius of 0, an outer radius of 0, a thickness at the edge of 5.73mm, and a back focal length (BFL) of 91.5mm. The effective focal length (EFL) is 100mm, and the thickness at the center is 14mm.

The lens features a sophisticated aspheric shape, with coefficients k1 and k2 set at -0.717 and 0, respectively. This shape allows for superior optical performance, reducing spherical aberration and other optical distortions.

The lens is coated with EDM UV 250-425nm on both the front and back surfaces. This coating enhances its performance in the ultraviolet spectrum, specifically between 250nm and 425nm, making it ideal for UV applications.

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