47-739-INK 40 mm Dia. N-SSK8/N-SF10 Achromatic Doublet; EFL=120mm VIS 0° 425-675nm

The 47-739-INK is a high-quality achromatic doublet lens, sourced from Edmund Optics, with a catalog number 47-739-INK. This lens boasts a 40 mm diameter and an effective focal length (EFL) of 120 mm, specifically designed for the visible light spectrum ranging from 425 to 675 nm.

The lens is composed of two types of Schott glass, N-SSK8 and N-SF10, which are renowned for their excellent optical properties. The lens features a standard curve coating on both the front and back surfaces, identified as 'edm vis-0 std curve'. This coating enhances the lens's performance by reducing surface reflections and improving transmission.

The lens geometry is meticulously designed, with a thickness of 10.5 mm at the edge and 9.6 mm at the center. The center thickness reduces to 4.2 mm at the 'a' position, providing a well-balanced optical path. The lens curvature is defined by radii r1, r2, and r3, which are 65.22 mm, -62.03 mm, and -1240.67 mm respectively.

The lens is available in a multiplet configuration, offering versatility and robustness for various applications. The weblink provided leads to the product page on the Edmund Optics website, where users can find more information and purchase the lens. The link's status is valid, and the lens is currently in stock, ensuring quick delivery for your optical project needs.