LA1540-B N-BK7 Plano-Convex Lens; Dia:0.5 in; f=15.0 mm ARC 650-1050nm

This is the LA1540-B N-BK7 Plano-Convex Lens, a high-quality optical component sourced from Thorlabs. The lens is designed with a plano-convex geometry, featuring a flat front surface and a curved back surface, which focuses light onto a single point. The lens has a diameter of 0.5 inches (12.7 mm) and a focal length of 15.0 mm, making it suitable for a wide range of optical applications.

The lens is made from N-BK7, a type of borosilicate glass known for its excellent optical properties. This material is characterized by a low coefficient of thermal expansion, high homogeneity, and excellent transmission in the visible and near-infrared regions. The lens also features an anti-reflection coating, specifically the THORLABS BBAR coating, which reduces surface reflections and increases transmission in the 650-1050 nm range.

The geometry of the lens includes a thickness of 1.8 mm at the edge and 5.1 mm at the center. The front and back radii of curvature are 7.7 mm and 11.6 mm, respectively. The lens is spherical in shape, ensuring a consistent curvature across the surface.