LA1399-B N-BK7 Plano-Convex Lens; Dia:2 in; f=175.0 mm ARC 650-1050nm

The LA1399-B is a Plano-Convex lens, a type of spherical lens, sourced from the renowned optical component manufacturer, Thorlabs. This lens is designed with a base shape of a circle, featuring a diameter of 2 inches (50.8 mm) and a thickness that varies from 3 mm at the edge to 6.7 mm at the center.

The lens has an effective focal length (EFL) of 175 mm, making it suitable for a wide range of optical applications. The front surface of the lens has a radius of curvature (R1) of 90.1 mm, while the back focal length (BFL) is 170 mm. The lens does not have an inner or outer radius, indicating a uniform thickness across its surface.

The LA1399-B lens is made of N-BK7, a popular glass type in the optical industry, due to its excellent optical properties and wide transmission range. This lens is specifically designed for use in the wavelength range of 650-1050 nm, making it ideal for near-infrared applications.

The lens features broadband anti-reflection (BBAR) coatings on both the front and back surfaces. These coatings, denoted as 'tho b bbar', are designed to reduce surface reflections and increase transmission, thereby enhancing the overall performance of the lens.