ACL5040U-B 50 mm Aspheric Condenser Lens with f=40 mm, NA=0.60, and AR Coating for 650-1050nm

The ACL5040U-B is a high-quality aspheric condenser lens offered by Thorlabs, designed with a focal length of 40 mm and a numerical aperture (NA) of 0.60. This lens is meticulously crafted from B270 Schott glass, ensuring durability and reliability in various applications. The lens features a 50 mm diameter, providing a wide field of view and excellent light-gathering capabilities.

The ACL5040U-B incorporates advanced aspheric geometry, which significantly reduces spherical aberrations and enhances imaging performance compared to traditional spherical lenses. The lens's inner and outer radii are optimized to deliver aberration-corrected, clear, and high-resolution images. The lens's design includes a 2.6 mm edge thickness and a 21 mm center thickness, ensuring robustness and minimizing potential deformations.

This condenser lens boasts an effective focal length (EFL) of 40 mm, calculated as the distance from the lens's rear focal point to its center. This EFL value is crucial for determining the lens's magnification and overall imaging performance in various systems.

The ACL5040U-B comes equipped with broadband anti-reflection (AR) coatings, specifically designed for the 650-1050 nm wavelength range. These coatings minimize surface reflections, maximize transmission, and improve overall system performance. The lens's front and back surfaces are coated with the same AR coating material, ensuring consistent performance across the entire optical path.