ACL25416U-B ø1" Aspheric Condenser Lens; f=16 mm, NA=0.79 AR 650-1050nm

The ACL25416U-B is a high-quality aspheric condenser lens, designed and manufactured by Thorlabs. This lens boasts a focal length of 16 mm and a numerical aperture of 0.79, making it ideal for a wide range of applications that require high-resolution imaging and light collection.

The lens is constructed from B270 Schott glass, a popular choice for its excellent optical properties and durability. It features a clear aperture of 1" (25.4 mm) and a thickness of 1.2 mm at the edge, ensuring robustness and stability. The center thickness is 14 mm, providing sufficient clearance for beam handling.

The ACL25416U-B is coated with Thorlabs' BBAR coating on both the front and back surfaces, enhancing its transmission in the 650-1050 nm range. This coating reduces surface reflections, improving the overall efficiency of the system and minimizing losses due to reflection.

The lens's aspheric design significantly reduces spherical aberration, a common issue in traditional spherical lenses. This results in improved image quality, with sharper focus and higher resolution. The lens's geometry includes a conic constant of -0.9991715, apex curvatures of 8.818197 mm and -69.99948 mm, and aspheric coefficients up to the 10th order.