49-937 6.25 mm Dia. N-SSK8/N-SF56 Achromatic Doublet; EFL=17.5mm VIS 0° 425-675nm

The 49-937 is a high-quality Achromatic Doublet lens, boasting a 6.25 mm diameter and an effective focal length (EFL) of 17.5mm. This lens is designed for use within the visible light spectrum, specifically between 425-675nm.

The lens is composed of two elements, made from N-SSK8 and N-SF56 Schott glass, respectively. These materials are chosen for their excellent optical properties, contributing to the lens's overall performance. 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 durability and light transmission capabilities.

The lens geometry is carefully designed with precision. The edge thickness measures 3.18mm, while the center thickness is 2.75mm. The lens's inner and outer radii are 0mm, indicating a circular shape. The first radius of curvature (r1) is 11.13mm, and the second radius (r2) is -9.22mm. The third radius (r3) is -38.49mm, suggesting a complex lens design that ensures high-quality imaging.

This lens is available from Edmund Optics and is currently in stock, according to the vendor's website. The catalog number 49-937 can be used to reference this specific lens model. For more information, users are encouraged to visit the provided weblink.