AC508-080-A-ML 50.8 mm Dia. N-BAF10/N-SF6HT Mounted Achromatic Doublet; EFL=80mm 400-700nm

This is the AC508-080-A-ML, a 50.8 mm diameter Achromatic Doublet lens, mounted and optimized for the spectral range of 400-700nm. The lens is sourced from Thorlabs, a leading global manufacturer of photonics equipment.

The lens is a multiplet, meaning it is composed of multiple elements to achieve superior optical performance. Specifically, it is made from two types of Schott glass: N-BAF10 and N-SF6HT. These materials are chosen for their specific refractive indices and dispersion properties, which help to minimize chromatic aberration, a common issue in lens systems.

The lens has a focal length of 80mm, as indicated by its Effective Focal Length (EFL). This makes it suitable for applications that require moderate magnification and a relatively wide field of view. The lens's geometry includes an edge thickness of 10.5mm, an inner radius of 0mm, and an outer radius of 0mm. The curvature radii are r1=54.9mm, r2=-46.4mm, r3=-247.2mm, with center thicknesses of 16mm and 2mm for the first and second elements, respectively.

The lens is coated with Thorlabs' AC400-700-A coating on both the front and back surfaces. This coating is designed to enhance transmission in the 400-700nm range, providing better light throughput and reducing reflections that could degrade image quality.