LA1380-AB 50.8 mm Dia. N-BK7 Plano-Convex Lens; EFL=500mm 400-1100nm

The LA1380-AB is a Plano-Convex lens with a diameter of 50.8 mm, sourced from the renowned optical components manufacturer, Thorlabs. This lens is made from N-BK7, a popular glass type known for its excellent optical properties, particularly its low dispersion. The lens's design includes a convex shape on one side and a flat surface on the other, making it suitable for a wide range of applications.

The lens has an effective focal length (EFL) of 500mm, which is a crucial parameter in lens selection. This EFL value indicates that the lens will produce a focused beam at a distance of 500mm from the lens when light rays are parallel to the lens axis. This feature is particularly useful in imaging systems, beam shaping, and other applications where a well-defined focal point is required.

The LA1380-AB is designed to operate within the wavelength range of 400-1100nm, making it versatile for use in various optical systems. It comes with anti-reflection broadband coatings (AR) on both surfaces, which significantly reduce reflection losses and improve transmission efficiency. The coating specifications are THo AB BAR, which are known for their high performance and durability.

In terms of geometry, the lens has a thickness of 3mm at the edge and 4.3mm at the center. The curvature radius (R1) of the convex surface is 257.5mm. The lens's base shape is circular, which is a common and versatile shape in optical systems.