LA1779-A N-BK7 Plano-Convex Lens; Dia:2 in; f=1000.0 mm ARC 350-700nm

The LA1779-A is a high-quality plano-convex lens from Thorlabs, designed for use in a wide range of optical applications. This lens is fabricated from N-BK7, a popular glass type known for its excellent optical properties, making it an ideal choice for applications that require high-performance optics.

The lens has a diameter of 2 inches (50.8 mm) and a focal length of 1000.0 mm, providing a large working distance and a wide field of view. The plano-convex design ensures a flat surface on one side, which is beneficial for applications that require a collimated beam or a flat focal plane.

The LA1779-A is coated with an anti-reflection coating (ARC) that is optimized for the 350-700 nm wavelength range. This coating reduces surface reflections, thereby increasing the transmission of light through the lens. The coating also protects the lens from environmental hazards, ensuring longevity and reliability.

The geometry of the lens includes a thickness of 3 mm at the edge and 3.6 mm at the center. The inner and outer radii are 0, indicating a flat surface on one side and a curved surface on the other side. The effective focal length (EFL) is 1000.0 mm, and the back focal length (BFL) is 994.3 mm.