AL5040-C 50 mm Dia. S-LAH64 High-Precision; CNC Polished Aspheric Lenses; EFL=40 mm; NA=0.55 AR 1050-1700nm

The AL5040-C is a high-precision aspheric lens offered by Thorlabs, designed with a diameter of 50 mm and a focal length of 40 mm. This lens is crafted from S-LAH64, a high-quality optical glass by Ohara, which is renowned for its excellent transmittance and low auto-fluorescence.

The lens features a high numerical aperture (NA) of 0.55, enabling it to capture more light and provide superior resolution compared to lower NA lenses. Its aspheric design significantly reduces spherical aberration, coma, and other optical aberrations, resulting in images with improved sharpness and clarity.

The AL5040-C is CNC polished, ensuring excellent surface quality and figure accuracy. It is coated with a broadband anti-reflection coating, optimized for the 1050-1700nm wavelength range, which minimizes surface reflections and enhances light transmission.

This lens is available for immediate purchase and is currently in stock on the Thorlabs website. With its superior optical performance and robust construction, the AL5040-C is an excellent choice for a wide range of applications, including beam shaping, imaging, and laser systems.