49-357-INK 25 mm Dia. N-SSK8/N-SF10 Achromatic Doublet; EFL=60mm VIS-NIR 400-1000nm

The 49-357-INK is a high-quality achromatic doublet lens, sourced from the renowned optical vendor, Edmund Optics. This lens, with a diameter of 25 mm, is designed for use in the visible to near-infrared spectrum, spanning 400 to 1000nm.

The lens is composed of two elements, made from N-SSK8 and N-SF10 Schott glass. These materials are known for their excellent optical properties, contributing to the lens's high performance. The lens's geometry is meticulously designed, with an effective focal length of 60mm, a center thickness of 9mm, and edge thickness of 8.78mm. The inner and outer radii are zero, indicating a symmetrical design.

The lens features a front and back coating of EDMM VIS-NIR 0SP2002000, a broadband anti-reflection coating that enhances transmission in the visible to near-infrared range. This coating reduces surface reflections, improving the overall efficiency and image quality of the lens.

The 49-357-INK is a multiplet lens, a complex optical system made up of multiple elements. This design allows for the correction of various aberrations, resulting in a lens with superior imaging capabilities. The lens's base shape is circular, contributing to its wide field of view and making it suitable for a variety of applications.