This is the AC050-008-A-ML 5 mm Dia. N-BAF10/N-SF6HT Mounted Achromatic Doublet, a high-quality optical component sourced from Thorlabs. This doublet lens, designed for use in the 400-700nm spectral range, is a multiplet type with a focal length of 7.5mm, making it suitable for a wide range of optical applications.
The lens features a base shape of a circle, with a diameter of 5mm. The edge thickness is 3.7mm, while the inner and outer radii are 0mm each. The first and second radii (r1 and r2) are 5.3mm and -3.9mm respectively, and the third radius (r3) is -17.1mm. The center thicknesses are 2.8mm and 1.7mm for the first and second centers respectively.
The lens is made from two types of materials: N-BAF10 and N-SF6HT, both from Schott. The front and back surfaces of the lens are coated with THo AC400-700-A, a broadband anti-reflection coating designed for use in the 400-700nm range.
The lens is currently in stock and available for immediate purchase. For more information, please refer to the vendor's website at https://www.thorlabs.com/thorproduct.cfm?partnumber=AC050-008-A-ML.