49-949 6.25 mm Dia. N-SSK8/N-SF56 Achromatic Doublet; EFL=17.5mm VIS-NIR 400-1000nm

This is a 6.25 mm diameter achromatic doublet lens, model 49-949, sourced from the renowned optical components manufacturer, Edmund Optics. The lens is specifically designed for use within the visible to near-infrared spectrum, spanning from 400 to 1000 nanometers.

The lens is part of the multiplets category, featuring a complex geometry that includes a center thickness of 2.75 mm, an edge thickness of 3.18 mm, and a total length of 42.49 mm. The lens's effective focal length (EFL) is 17.5 mm, making it suitable for a wide range of optical applications.

The lens is composed of two types of glass, N-SSK8 and N-SF56, both from Schott, a leading manufacturer of high-quality optical glass. 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 lens is coated with Edmund Optics' VIS-NIR coating (edm visnir0sp2002000), which is applied to both the front and back surfaces. This coating is designed to enhance the lens's performance within the visible to near-infrared spectrum, improving transmission and reducing reflection.

According to the vendor, this item is currently in stock, and more information can be found on the Edmund Optics website using the provided weblink.