49-355-INK 25 mm Dia. N-SK11/N-SF5 Achromatic Doublet; EFL=45mm VIS-NIR 400-1000nm

The 49-355-INK is a high-quality achromatic doublet lens, designed and manufactured by Edmund Optics. This lens, with a diameter of 25 mm, is specifically engineered for use in the visible to near-infrared spectrum, spanning from 400 to 1000 nm. The lens boasts an effective focal length (EFL) of 45 mm, making it suitable for a wide range of optical applications.

The lens is composed of two elements, made from N-SK11 and N-SF5 Schott glass. These materials are carefully selected to minimize chromatic aberration, ensuring high-resolution images with accurate color reproduction. The lens features a front and back coating of EDm VIS-NIR 0SP2002000, further enhancing its performance by reducing surface reflections and increasing transmission.

The lens geometry is meticulously designed, with a central thickness of 7.89 mm and edge thickness of 7.08 mm. The radii of curvature for the three surfaces are R1: 28.75 mm, R2: -21.38 mm, and R3: -82.92 mm. The lens also features an inner radius of 0 mm and an outer radius of 0 mm.

This lens is available in a multiplet shape, offering flexibility and versatility in its application. The 49-355-INK is currently in stock, according to the vendor's website, and further information, including purchasing options, can be found at https://www.edmundoptics.com/p/25mm-dia-x-45mm-fl-vis-nir-inked-achromatic-lens/9754/.