49-372 30 mm Dia. N-SSK8/N-SF10 Achromatic Doublet; EFL=60mm VIS-NIR 400-1000nm

The 49-372 is a high-quality achromatic doublet lens, designed and manufactured by Edmund Optics. This lens is specifically engineered for use in the visible (VIS) and near-infrared (NIR) spectrum, with a wavelength range of 400-1000nm. The lens boasts a 30mm diameter and an effective focal length (EFL) of 60mm, making it suitable for a wide range of optical applications.

The lens is constructed from two types of glass, N-SSK8 and N-SF10, both sourced from Schott. This combination of materials helps to correct chromatic aberration, a common issue in optical systems where different wavelengths of light are focused at different points. The achromatic design ensures that the lens focuses both red and blue light at the same point, providing sharper images and improved color accuracy.

The 49-372 lens features a complex geometry, with three radii of curvature (r1, r2, and r3) and varying thicknesses at the edge, center, and center-a. This design allows for precise control over the lens's optical properties, enabling it to deliver superior performance.

The lens is coated with Edmund Optics' VIS-NIR coating (edm visnir0sp2002000) on both the front and back surfaces. This coating is designed to reduce surface reflections and improve transmission across the lens's entire wavelength range.