49-300 5 mm Dia. N-BAF10/N-SF10 Achromatic Doublet; EFL=10mm VIS-NIR 400-1000nm

The 49-300 is a high-quality achromatic doublet lens, designed and manufactured by Edmund Optics. This lens, with a 5 mm diameter, is specifically engineered for use in the visible (VIS) and near-infrared (NIR) spectrum, spanning from 400 to 1000nm.

The lens features an effective focal length (EFL) of 10mm, making it suitable for applications that require a compact, high-performance optical component. The achromatic design ensures minimal chromatic aberration, a common issue in lens systems where different wavelengths of light are focused at different points.

The lens is constructed from two types of glass, N-BAF10 and N-SF10, both from Schott. These materials were chosen for their excellent optical properties, including high transmittance and low dispersion. The lens is coated with Edmund Optics' VIS-NIR coating (edm visnir0sp2002000) on both the front and back surfaces, further enhancing its performance by reducing reflection and increasing transmission.

The geometry of the lens is carefully crafted to optimize its optical performance. The edge thickness is 2.22mm, while the center thickness is 1.73mm. The lens features two radii of curvature, r1 and r2, which are 7.17mm and -4.39mm respectively. There is also a third radius, r3, which is -33.96mm, contributing to the lens's complex but highly effective design.