LA1608-780 N-BK7 Plano-Convex Lens; Dia:1 in; f=75.0 mm 780nm V-Coat

The LA1608-780 is a high-quality Plano-Convex lens from Thorlabs, designed for use in a wide range of optical applications. This lens is made from N-BK7, a popular optical glass due to its excellent optical properties, high homogeneity, and resistance to thermal shock.

The lens has a diameter of 1 inch (25.4 mm) and a focal length of 75 mm, making it suitable for applications that require a long focal length. The lens's geometry includes a thickness of 2 mm at the edge and 4.1 mm at the center, providing a solid structure and ensuring minimal distortion. The effective focal length (EFL) is 75 mm, and the back focal length (BFL) is 72.02 mm, which is crucial for determining the lens's placement in an optical system.

The LA1608-780 features a V-coat on both the front and back surfaces at 780 nm. This coating enhances the lens's performance by reducing reflection and increasing transmission, making it ideal for use in laser applications. The coating is designed to be anti-reflective at 780 nm, ensuring optimal performance in this specific wavelength range.