AC254-150-B 25.4 mm Dia. N-LAK22/N-SF6HT Unmounted Achromatic Doublet; EFL=150mm 650-1050nm

The AC254-150-B is a high-quality achromatic doublet lens from Thorlabs, designed for use in the 650-1050nm spectral range. This lens is part of Thorlabs' extensive catalog of optical elements, which includes a wide variety of lenses, mirrors, and other optical components.

The lens features a 25.4 mm diameter and a thickness of 6.5 mm at the edge. It is designed with a base shape that is circular, providing a wide field of view. The lens's geometry includes an inner radius of 0 and an outer radius of 0, with a first radius (r1) of 83.6 and a second radius (r2) of -89.33. The third radius (r3) is -1330.5, and the thickness at the center is 4 for the first center and 3.5 for the second center.

The lens is made from two types of Schott glass: N-LAK22 and N-SF6HT. These materials are chosen for their excellent optical properties, including high transmission in the specified spectral range and low dispersion. The lens is coated with Thorlabs' AC650-1050-B coating on both the front and back surfaces, which further enhances its performance by reducing reflections and increasing transmission.

The lens is unmounted, allowing users to integrate it into their own optical systems. Its shape is a multiplet, which means it is composed of multiple elements to achieve superior optical performance. This lens is a great choice for a wide range of applications, including imaging, spectroscopy, and beam shaping.

According to Thorlabs' website, the lens is currently in stock, making it readily available for immediate use. The website also provides more detailed specifications and technical drawings, which can be useful for designing and implementing optical systems that include this lens.