This is a 12.5 mm diameter achromatic doublet lens, catalog number 12-924, sourced from the renowned optical vendor, Edmund Optics. The lens is mounted and features an effective focal length (EFL) of 25mm, designed for the spectral range of 400-700nm. The lens is made from two types of Schott glass, N-BAF10 and N-SF10, which are renowned for their high-quality optical properties.
The lens geometry is meticulously designed with an inner radius of 0 and an outer radius of 0, providing a clean, seamless optical path. The first radius of curvature (r1) is 17.27, while the second radius (r2) is -10.99, and the third radius (r3) is -107.03. The edge thickness of the lens is 4.9mm, while the center thickness is 5mm, ensuring structural integrity and minimal distortion.
The lens is coated with Edmund Optics' standard MgF2 coating on both the front and back surfaces, providing excellent transmission characteristics and protection against environmental factors. The coating follows the standard curve, ensuring consistent performance across the spectral range.
This lens is classified as a multiplet, indicating a complex optical design involving multiple elements. It is suitable for a wide range of applications, including imaging, beam shaping, and spectroscopy. The lens is currently in stock, as indicated by its weblink status, and more detailed information can be found on the vendor's website.