A220-B 7.2 mm Dia. D-K59 Molded Glass Aspheric Lenses; EFL=11 mm; NA=0.26 AR 650-1050nm

The A220-B is a high-quality aspheric lens, precision-molded from D-K59 glass, a type of glass known for its excellent optical properties. This lens boasts a diameter of 7.2 mm and a thickness of 3.82 mm at the edge, making it a compact yet robust optical component. The lens's effective focal length (EFL) is 11 mm, which is a versatile focal length for many optical applications.

The lens's aspheric design is a significant feature, enabling it to correct spherical aberration, a common issue in traditional spherical lenses. This design ensures superior image quality, making the A220-B an excellent choice for high-resolution applications. The lens's numerical aperture (NA) is 0.26, indicating a wide acceptance angle and high light-gathering capability.

The A220-B is coated with broadband anti-reflection (AR) coatings, optimized for the 650-1050nm wavelength range. This coating reduces surface reflections, enhancing the lens's transmission and overall performance. The coating is applied to both the front and back surfaces of the lens, ensuring minimal loss of light due to reflection at either surface.

This lens is sourced from Thorlabs, a reputable vendor known for its high-quality optical components. The lens is currently in stock, according to the vendor's website, ensuring quick delivery for your optical project needs.