AC254-200-B 25.4 mm Dia. N-LAK22/N-SF10 Unmounted Achromatic Doublet; EFL=200mm 650-1050nm

The AC254-200-B is a high-quality achromatic doublet lens from Thorlabs, designed for use in the 650-1050nm spectral range. This lens, with a catalog number AC254-200-B, is part of Thorlabs' extensive catalog of optical elements, which 3DOptix integrates into its advanced optical simulation software.

The lens features a base shape of a circle, with a diameter of 25.4 mm. It has a thickness of 7.3 mm at the edge and a central thickness of 4 mm for both the first and second centers. The lens's geometry includes an inner radius of 0 mm and an outer radius of 0 mm, with radii r1 and r2 measuring 106.4 mm and -96.6 mm, respectively. The effective focal length (EFL) of this lens is 200 mm.

The lens is made from two types of Schott glass: N-LAK22 and N-SF10. Both surfaces of the lens are coated with Thorlabs' AC650-1050-B coating, designed for use in the 650-1050nm spectral range, ensuring high transmission and durability.

The AC254-200-B is a multiplet lens, meaning it is composed of multiple elements to achieve superior optical performance. This lens is unmounted, providing users with the flexibility to integrate it into their optical systems according to their specific requirements.

According to Thorlabs' website, the AC254-200-B is currently in stock, making it readily available for immediate use. For more information, users can visit the product page at https://www.thorlabs.com/thorproduct.cfm?partnumber=AC254-200-B.