AC254-250-C-ML 25.4 mm Dia. SF2/N-SF6HT Mounted Achromatic Doublet; EFL=250mm 1050-1700nm

The AC254-250-C-ML is a mounted achromatic doublet lens, designed and manufactured by Thorlabs. This lens is specifically engineered for use within the spectral range of 1050-1700nm, making it suitable for a variety of applications within this range.

The lens features a base shape of a circle, with a diameter of 25.4mm. The edge thickness of the lens is 6mm, while the inner and outer radii are 0mm. The lens's first radius of curvature (r1) is 44mm, the second radius (r2) is -57.7mm, and the third radius (r3) is 93.1mm. The center thickness of the lens at the first and second locations are 4.5mm and 2.5mm respectively.

The lens is composed of two materials, SF2 from Schott and N-SF6HT from Schott. Both the front and back surfaces of the lens are coated with Thorlabs' AC1050-1700-C coating, designed to enhance performance within the specified spectral range.

The lens is a multiplet, meaning it is composed of multiple elements. This design allows for the correction of chromatic aberrations, ensuring high-quality imaging across the entire spectral range.

The item data also indicates that this lens has a catalog number of AC254-250-C-ML and is currently in stock. The weblink provided leads to the product page on Thorlabs' website, where users can find more detailed information, purchase the lens, or check its availability.