49-371 30 mm Dia. N-BAF10/N-SF10 Achromatic Doublet; EFL=50mm VIS-NIR 400-1000nm

The 49-371 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 50mm, making it suitable for a wide range of optical applications.

The lens is constructed from two types of Schott glass, N-BAF10 and N-SF10, which are renowned for their excellent optical properties. The use of these materials ensures high-resolution images with minimal chromatic aberration. The lens features a complex geometry, with radii of curvature of r1=34.81mm, r2=-22.12mm, and r3=-203.48mm. The edge thickness of the lens is 9.25mm, while the center thickness is 11mm, and the center thickness 'a' is 2.2mm.

The lens is coated with Edmund Optics' proprietary VIS-NIR coating (edm visnir0sp2002000), which is applied to both the front and back surfaces. This coating enhances the lens's performance in the VIS-NIR spectrum, improving transmission and reducing reflection.

The 49-371 is a multiplet lens, meaning it is composed of multiple elements. This design allows for the correction of various optical aberrations, resulting in a sharper, clearer image. The lens is currently in stock and available for purchase through the Edmund Optics website.