84-327 6.25 mm Dia. N-FK5/F2HT Achromatic Doublet; EFL=12.5mm UV-VIS 345-700nm

The 84-327 is a high-quality achromatic doublet lens, sourced from Edmund Optics, featuring a 6.25 mm diameter and an effective focal length (EFL) of 12.5mm. This lens is specifically designed for use within the UV-VIS spectrum, spanning from 345 to 700nm, making it an ideal choice for applications requiring precise focus and clarity within this range.

The lens is composed of two distinct materials: N-FK5 from Schott and F2HT from Schott. These materials were carefully selected to minimize chromatic aberration, a common issue in optical systems where different wavelengths of light are focused at different points. By combining these materials in a doublet configuration, the 84-327 is able to deliver sharp, clear images with reduced color fringing.

The geometry of the lens is optimized for performance and ease of integration. The edge thickness measures 3.58mm, while the center thickness is 3.5mm, providing a robust structure that can withstand typical handling and usage. The inner and outer radii are 0mm, indicating a symmetrical design that can simplify the alignment process in optical systems.

The lens features a standard UV-VIS coating on both the front and back surfaces, which is Edmund Optics' standard curve. This coating enhances the lens's performance by reducing surface reflections and increasing transmission, thereby improving overall light efficiency.