AC508-300-AB 50.8 mm Dia. N-LAK22/N-SF6 Unmounted Achromatic Doublet; EFL=300mm 400-1100nm

The AC508-300-AB is a high-quality achromatic doublet lens, sourced from the renowned optical component manufacturer, Thorlabs. This lens, with a diameter of 50.8 mm, is designed for use in the spectral range of 400-1100nm, making it suitable for a wide range of applications in the fields of imaging, spectroscopy, and metrology.

The lens is composed of two elements, made from Schott's N-LAK22 and N-SF6 glasses. These materials were chosen for their excellent optical properties, contributing to the lens's high performance. The lens features a focal length of 300mm, as indicated by its EFL (Effective Focal Length) value. This long focal length makes it ideal for use in applications requiring high magnification or narrow fields of view.

The lens is coated with Thorlabs' Anti-Reflection (AR) coating, specifically the THo AB Achromatic AR coating. This coating is designed to reduce surface reflections, thereby increasing transmission and improving image quality. The coating is applied to both the front and back surfaces of the lens.

The lens is unmounted, providing users with the flexibility to integrate it into their systems using their preferred mounting solution. The lens has a central thickness of 9mm and edge thickness of 11mm, providing mechanical stability and resistance to deformation.