AL1210M-B 12.5 mm Dia. S-LAH64 High-Precision; CNC Polished Aspheric Lenses; EFL=10 mm; NA=0.55 AR 650-1050nm

The AL1210M-B is a high-precision aspheric lens offered by Thorlabs, a leading vendor in the optical industry. This lens, crafted from S-LAH64 Ohara, is designed with a diameter of 12.5 mm and a center thickness of 4.25 mm, making it a compact yet robust solution for various optical applications.

The lens features an effective focal length (EFL) of 10 mm, providing a concentrated optical path for improved focus and clarity. The aspheric design, characterized by its radii of curvature (r1: 7.77 mm, r2: 0 mm), contributes to reduced spherical aberration, enhancing the overall image quality.

The lens's geometry includes a large numerical aperture (NA) of 0.55, enabling a wide angle of incidence and increased light-gathering capability. The edge thickness is 1.6 mm, ensuring durability and resistance to stress-induced birefringence.

The AL1210M-B comes with anti-reflection (AR) coatings on both the front and back surfaces, specifically designed for the 650-1050 nm wavelength range. These coatings minimize surface reflections, thereby increasing transmission and reducing ghosting and flare effects.