49-316-INK 9 mm Dia. N-BK7/N-SF5 Achromatic Doublet; EFL=36mm VIS-NIR 400-1000nm

The 49-316-INK is a high-quality achromatic doublet lens, sourced from the renowned optical vendor, Edmund Optics. This lens is specifically designed for use in the visible (VIS) and near-infrared (NIR) spectrum, spanning 400-1000nm. The lens is 9mm in diameter, making it suitable for a wide range of optical applications.

The lens features a focal length (EFL) of 36mm, which is a common choice for many optical systems due to its versatility. The achromatic design of the lens helps to minimize chromatic aberration, a common issue in optical systems where different wavelengths of light are focused at different points. This is achieved through the use of two different types of glass, N-BK7 and N-SF5, in the doublet configuration.

The geometry of the lens is carefully crafted to optimize its performance. The edge thickness is 3.32mm, while the center thickness is 2.5mm. The lens also features an inner radius of 0mm and an outer radius of 0mm. The first radius of curvature (r1) is 22.16mm, and the second radius (r2) is -15.98mm. The third radius (r3) is -46.14mm.

The lens is coated with edm visnir0sp2002000 on both the front and back surfaces. This coating is designed to enhance the lens's performance in the VIS-NIR spectrum. The lens is currently in stock and available for immediate purchase, as indicated by its valid weblink status.