The 49-390-INK is a high-quality achromatic doublet lens, designed and manufactured by Edmund Optics. This lens, with a diameter of 50 mm, is specifically engineered for use in the visible to near-infrared spectrum, spanning from 400 to 1000 nm. The lens is part of the EFL=100mm series, ensuring a focal length of 100 mm, which is a common choice for many optical applications due to its versatility.
The lens is constructed from two types of glass, N-BAF10 and N-SF10, both from Schott. These glasses are known for their excellent optical properties, making them ideal for use in high-precision optical systems. The lens features a front and back coating of EDMP VIS-NIR 0SP 2002000, a broadband anti-reflection coating that further enhances the lens' performance by reducing surface reflections.
The lens geometry is carefully designed, with an outer radius of 0 and an inner radius of 0, indicating a simple, circular shape. The edge thickness is 12.55 mm, while the center thickness is 13.92 mm. The lens also features a central thickness 'a' of 4 mm. The curvature radii, r1 and r2, are 69.28 mm and -46.95 mm, respectively, while r3 is -446.01 mm.