ACN254-050-A 25.4 mm Dia. N-BAF10/N-SF6HT Unmounted Achromatic Doublet; EFL=-50mm 400-700nm

The ACN254-050-A is a 25.4 mm diameter achromatic doublet lens, sourced from Thorlabs, a renowned vendor in the optical industry. This lens is designed for use in the 400-700nm spectral range, making it suitable for a wide range of applications in the visible light spectrum.

The lens is composed of two materials, N-BAF10 and N-SF6HT, both from Schott, a leading manufacturer of high-quality optical glass. The use of these materials ensures high transmission and low dispersion, contributing to the lens's excellent optical performance.

The lens features a double concave-convex shape, with a central thickness of 2mm and a total thickness at the edge of 9.4mm. The inner and outer radii are 0, and the lens has three radii of curvature: -34mm, 32.5mm, and 189.2mm. This complex shape is designed to correct chromatic aberration, a common issue in optical systems.

Both the front and back surfaces of the lens are coated with Thorlabs' AC400-700-A coating, which is designed for high transmission in the 400-700nm range. This coating enhances the lens's performance by reducing reflection and increasing transmission, thereby improving the overall efficiency of the optical system.

The lens is unmounted, providing users with the flexibility to integrate it into their optical systems in the way that best suits their needs. The lens's specifications make it an excellent choice for a wide range of applications, including imaging, beam shaping, and spectroscopy.