49-336 15 mm Dia. N-BAF10/N-SF10 Achromatic Doublet; EFL=40mm VIS-NIR 400-1000nm

The 49-336 is a high-quality achromatic doublet lens, sourced from the renowned optical vendor, Edmund Optics. This lens is specifically designed for use in the visible (VIS) and near-infrared (NIR) spectrum, spanning 400-1000nm. The lens features a 15mm diameter and an effective focal length (EFL) of 40mm, 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 N-BAF10 glass is used for the first element, while the second element is made from N-SF10 glass. This combination helps to correct chromatic aberration, ensuring sharp and clear images across the entire spectral range.

The lens geometry is carefully designed to optimize performance. The first and second radii (r1 and r2) are 26.97mm and -17.64mm respectively, while the third radius (r3) is -205.03mm. The edge thickness is 6.38mm, while the center thickness is 5.98mm. The lens also features a small central aperture with a thickness of 1.6mm.

The lens is coated with a broadband anti-reflection coating, specifically the EDM VIS-NIR 0SP2002000 coating. This coating is designed to minimize surface reflections and increase transmission across the VIS-NIR spectrum, further enhancing the lens's performance.