49-320-INK 9 mm Dia. N-BK7/N-SF5 Achromatic Doublet; EFL=75mm VIS-NIR 400-1000nm

The 49-320-INK is a high-quality achromatic doublet lens, sourced from the renowned optical vendor, Edmund Optics. This lens, with a catalog number 49-320-INK, is designed for use in the visible to near-infrared spectrum, spanning 400 to 1000nm.

The lens features a base shape of a circle, with a diameter of 9mm. The edge thickness of the lens is 4.28mm, while the inner and outer radii are zero, indicating a flat surface. The effective focal length (EFL) of the lens is 75mm, making it suitable for various optical applications.

The lens is composed of two materials, N-BK7 and N-SF5, both from Schott. These materials are known for their excellent optical properties, contributing to the lens's high performance. The lens is coated with edm visnir0sp2002000 on both the front and back surfaces, further enhancing its performance and durability.

The geometry of the lens is intricate, with three radii (r1, r2, and r3) and three thicknesses (edge, center, and center a). The radii are 46.44mm, -33.77mm, and -95.94mm, while the thicknesses are 4.28mm, 3mm, and 1.6mm, respectively. This complex geometry allows the lens to achieve superior optical performance.

The lens is currently in stock and can be purchased directly from the Edmund Optics website, with the weblink provided for convenience. This lens is a perfect choice for those seeking high-performance optical components for their projects or applications.