49-955-INK 18 mm Dia. N-BAF10/N-SF57 Achromatic Doublet; EFL=22.5mm VIS-NIR 400-1000nm

The 49-955-INK is a high-quality achromatic doublet lens, sourced from the renowned optical vendor, Edmund Optics. This lens, with a diameter of 18 mm, is designed for use in the visible (VIS) and near-infrared (NIR) spectrum, spanning 400-1000nm. The lens is specifically designed for use in multiplet configurations, making it an ideal choice for complex optical systems.

The lens features an effective focal length (EFL) of 22.5mm, providing a compact and efficient optical solution. The geometry of the lens is meticulously designed, with a thickness of 8.03mm at the edge and 8.7mm at the center, ensuring optimal light transmission and minimal distortion. The lens's inner and outer radii are 0mm, indicating a planar surface, which further contributes to its high-performance capabilities.

The 49-955-INK is fabricated from two high-quality materials, N-BAF10 and N-SF57, both from Schott. These materials are carefully selected for their excellent optical properties, ensuring high transmission and low dispersion across the VIS-NIR spectrum. The lens is coated with Edmund Optics' proprietary VIS-NIR coating (edm visnir0sp2002000) on both the front and back surfaces, further enhancing its performance by reducing surface reflections and increasing transmission.