49-776 12.7 mm Dia. N-BAK1/N-SF8 Achromatic Doublet; EFL=44.45mm VIS 0° 425-675nm

The 49-776 is a high-quality achromatic doublet lens, boasting a 12.7 mm diameter and an effective focal length (EFL) of 44.45mm. This lens is designed for use within the visible light spectrum, specifically between 425-675nm, and is optimized for a 0° angle of incidence.

The lens is composed of two elements, made from N-BAK1 and N-SF8 Schott glass, which are renowned for their excellent optical properties. The N-BAK1 element, positioned closest to the light source, has an inner radius of 0 and an outer radius of 0. The second element, made from N-SF8, has a radius of curvature (R1) of 28.49mm and a second radius (R2) of -20.03mm. The lens's center thickness is 3mm, with the first and second surfaces having thicknesses of 4.04mm and 2mm, respectively.

The lens features a standard anti-reflective coating on both the front and back surfaces, specifically the EDM VIS-0 coating, which is designed to minimize surface reflections and increase transmission within the specified visible light spectrum. This coating is part of Edmund Optics' standard curve, ensuring consistent performance across different lenses.

The 49-776 is available for purchase from Edmund Optics and is currently in stock. For more information, including detailed specifications and purchasing options, please refer to the provided weblink.