62-488-INK 12.5 mm Dia. N-BK7/N-SF5 Negative Achromatic Doublet; EFL=-50mm VIS 0° 425-675nm

The 62-488-INK is a high-quality negative achromatic doublet lens, sourced from the renowned optical component vendor, Edmund Optics. This lens, with a diameter of 12.5 mm, is designed for use in the visible light spectrum, specifically between 425 and 675 nanometers. The lens boasts an effective focal length (EFL) of -50mm, making it suitable for a wide range of optical applications.

The lens is composed of two elements, made from N-BK7 and N-SF5 Schott glass, respectively. These materials are chosen for their excellent optical properties, including low dispersion and high transmission in the visible spectrum. The lens features a standard curve coating on both the front and back surfaces, denoted as 'edm vis-0 std curve'. This coating enhances the lens's performance by reducing surface reflections and improving transmission.

The lens geometry is carefully designed to optimize its optical performance. It has a thickness of 4.4mm at the edge, with the central thickness being 2mm. The lens's first and second radii of curvature are -30.83mm and 23.47mm, respectively, while the third radius of curvature is 69.2mm. The lens's inner and outer radii are both zero, indicating a circular shape.

According to the vendor's information, this item is currently in stock, and the web link provided leads to its product page on the Edmund Optics website. This lens, with its superior optical properties and robust design, is an excellent choice for various optical applications.