62-481 9 mm Dia. N-BK7/N-SF5 Negative Achromatic Doublet; EFL=-12mm VIS 0° 425-675nm

The 62-481 is a high-quality negative achromatic doublet lens, sourced from the renowned optical components manufacturer, Edmund Optics. This lens boasts a 9 mm diameter and a focal length of -12 mm, designed for use within the visible light spectrum, specifically between 425-675 nm.

The lens is constructed from two distinct materials, N-BK7 and N-SF5, both from Schott, a leading manufacturer of optical glass. This combination ensures superior optical performance, minimizing chromatic aberration and delivering sharp, clear images. The lens features a standard anti-reflective coating, EDm Vis-0 std curve, on both the front and back surfaces, further enhancing its light transmission capabilities.

The lens geometry is intricately designed, with a central thickness of 1.5 mm and edge thickness of 5.79 mm. The radii of the curvature are -6.98 mm for the first surface, 6.98 mm for the second, and 23.22 mm for the third surface. This complex design allows for precise control over the optical path, making this lens suitable for a wide range of applications.