ACN127-020-B 12.7 mm Dia. N-BAF10/N-SF6HT Unmounted Achromatic Doublet; EFL=-20mm 650-1050nm

The ACN127-020-B is a high-quality, unmounted 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 beam splitters, among other components.

The lens features a 12.7 mm diameter and a thickness of 6.4 mm at the edge. It is composed of two elements, made from N-BAF10 and N-SF6HT Schott glass, which are renowned for their optical properties. The lens's geometry is complex, with three radii of curvature (-12.3mm, 14mm, and 152.8mm) and varying thicknesses at the center (1.5mm and 3mm). This design allows for superior optical performance, particularly in terms of chromatic aberration correction.

The lens is coated with Thorlabs' AC650-1050-B coating on both the front and back surfaces. This anti-reflection coating is specifically designed for use in the 650-1050nm range, further enhancing the lens's performance in this spectral region.

Please note that the lens is unmounted, meaning it does not come with any mechanical housing or mounting hardware. This allows for maximum flexibility in integrating the lens into your optical system, but it also means that you will need to provide your own mounting solution.

The ACN127-020-B is currently in stock and available for immediate shipping. For more information, including detailed specifications and ordering options, please visit the product webpage at https://www.thorlabs.com/thorproduct.cfm?partnumber=ACN127-020-B.