AL100200-C 100 mm Dia. S-LAH64 High-Precision; CNC Polished Aspheric Lenses; EFL=200 mm; NA=0.23 AR 1050-1700nm

The AL100200-C is a high-precision aspheric lens, offered by Thorlabs, with a diameter of 100 mm and a focal length of 200 mm. This lens is designed for use in the 1050-1700nm wavelength range, making it suitable for a variety of applications in the near-infrared spectrum.

The lens is made from n-BK7 Schott glass, a material known for its excellent optical properties and high damage threshold. The aspheric design of the lens helps to reduce spherical aberration, providing superior image quality compared to traditional spherical lenses. The lens is CNC polished, ensuring a high level of surface accuracy and smoothness.

The lens features a broadband anti-reflection coating, applied to both the front and back surfaces. This coating is designed to reduce surface reflections, improving transmission and reducing ghosting and flare. The coating is effective over the 1050-1700nm wavelength range, making it ideal for use with broadband light sources.

The lens has a thickness of 6.5 mm at the edge and 19 mm at the center. The front and back surfaces of the lens have a radius of curvature of 102.24 mm and 0 mm respectively, further contributing to the lens's low spherical aberration. The lens has a numerical aperture (NA) of 0.23, indicating a wide acceptance angle and high light-gathering capability.