A390-B 6 mm Dia. H-LAK54 Molded Glass Aspheric Lenses; EFL=4.6 mm; NA=0.53 AR 650-1050nm

The A390-B is a high-quality aspheric lens from Thorlabs, designed with a 6 mm diameter and a focal length of 4.6 mm. This lens is made from H-LAK54 glass, a molded glass material known for its excellent optical properties. The lens features a high numerical aperture (NA) of 0.53, which allows for a wide angle of view and high light-gathering capability.

The A390-B is coated with a broadband anti-reflection (AR) coating, specifically designed for the 650-1050nm wavelength range. This coating reduces surface reflections, thereby increasing transmission and improving overall system performance. The lens has a center thickness of 3.1 mm and an edge thickness of 1.64 mm, providing excellent mechanical stability.

The lens's aspheric design helps to reduce spherical aberration, a common issue in traditional spherical lenses. This results in improved image quality, making the A390-B an ideal choice for various applications, including imaging systems, beam shaping, and laser applications.

The A390-B is currently in stock and available for immediate shipping. For more information, please refer to the vendor's website, where you can find detailed specifications, datasheets, and other resources.