AC254-040-C 25.4 mm Dia. N-LAK22/N-SF6 Unmounted Achromatic Doublet; EFL=40mm 1050-1700nm

The AC254-040-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 infrared spectrum, specifically between 1050nm and 1700nm, making it ideal for a wide range of applications in this spectral range.

The lens is a multiplet, meaning it is composed of multiple optical elements. The specific geometry of these elements is as follows: the first surface has a radius of curvature (r1) of 24.4mm, the second surface has an r2 of -21.1mm, and the third surface has an r3 of -143.9mm. The edge thickness of the lens is 7.8mm, while the center thicknesses are 10mm and 1.8mm for the first and second elements, respectively.

The lens is made from two types of high-quality Schott glass: N-LAK22 and N-SF6. These materials were chosen for their excellent optical properties in the infrared spectrum. The lens is coated with Thorlabs' proprietary AC1050-1700-C coating on both the front and back surfaces, further enhancing its performance in the specified spectral range.

This lens is unmounted, providing users with the flexibility to integrate it into their systems in the most suitable manner. The item data indicates that this lens is in stock, and users can access more information and purchase it directly from Thorlabs' website using the provided weblink.