AC254-125-C 25.4 mm Dia. N-LAK22/N-SF6 Unmounted Achromatic Doublet; EFL=125mm 1050-1700nm

The AC254-125-C is a high-quality achromatic doublet lens, sourced from the renowned optical component manufacturer, Thorlabs. This lens, with a diameter of 25.4 mm, is designed for use in the spectral range of 1050-1700nm, making it suitable for a wide range of applications in infrared spectroscopy, laser systems, and other areas where broadband light sources are used.

The lens features a multilayer anti-reflection coating, specifically the THo AC1050-1700-C, on both the front and back surfaces. This coating enhances the lens's transmission efficiency and reduces surface reflections, thereby improving the overall system performance.

The lens geometry is a complex multiplet design, with three radii of curvature (r1, r2, and r3) and varying thicknesses at the edge, center 1, and center 2. This design allows for superior optical performance, including reduced chromatic aberration and improved imaging quality.

The lens is unmounted, providing users with the flexibility to integrate it into their systems using their preferred mounting solution. The lens thickness at the edge is 6.5mm, while the inner and outer radii are zero, indicating a circular shape. The thicknesses at the two center points are 5mm and 3mm, respectively.

The lens is made from two types of Schott glass, N-LAK22 and N-SF6, each selected for its specific optical properties. These materials ensure the lens's excellent performance across the specified spectral range.