LA1509-780 N-BK7 Plano-Convex Lens; Dia:1 in; f=100.0 mm 780nm V-Coat

The LA1509-780 is a Plano-Convex lens, part of the extensive catalog of optical elements offered by Thorlabs. This lens is designed for use in the 780nm wavelength range, featuring a V-coat on both the front and back surfaces. The lens is made from n-BK7 Schott glass, a popular choice due to its excellent optical properties and broad transmission range.

The lens has a diameter of 1 inch (25.4mm) and a thickness of 2mm at the edge, increasing to 3.6mm at the center. The effective focal length (EFL) is 100mm, making it suitable for a variety of applications. The radius of curvature for the curved face (R1) is 51.5mm, and the back focal length (BFL) is 97.28mm. The inner and outer radii are both 0, indicating a flat surface on the opposite side of the curved face.

The coating on this lens is a broadband anti-reflection coating, designed to reduce surface reflections and increase transmission. This coating is specifically designed for the 780nm wavelength, making it ideal for applications in this range.