AL100200-B 100 mm Dia. S-LAH64 High-Precision; CNC Polished Aspheric Lenses; EFL=200 mm; NA=0.23 AR 650-1050nm

The AL100200-B 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 650-1050nm wavelength range, making it suitable for a wide range 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 on both the front and back surfaces, which is designed to reduce surface reflections to less than 0.5% across the 650-1050nm wavelength range. This coating helps to improve light transmission through the lens, reducing losses and increasing the efficiency of your optical system.

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. The lens has a numerical aperture (NA) of 0.23, which determines the light-gathering ability of the lens.