LB1945-B N-BK7 Bi-Convex Lens; Dia:1 in; f=200.0 mm ARC 650-1050nm

The LB1945-B is a high-quality bi-convex lens from Thorlabs, designed for use in a wide range of optical applications. This lens is made from N-BK7, a popular glass type known for its excellent optical properties, and is manufactured by Schott, a leading glass manufacturer.

The lens features a diameter of 1 inch (25.4 mm) and a focal length of 200.0 mm. The front and back surfaces of the lens are AR-coated for the 650-1050nm wavelength range, enhancing its transmission capabilities and reducing unwanted reflections. The lens has a center thickness of 2.8 mm and an edge thickness of 2 mm, providing robustness and durability.

The LB1945-B is a spherical lens with a base shape of a circle. The front and back radii of curvature are 205.6 mm and -205.6 mm, respectively, resulting in a back focal length of 199.1 mm. The lens is designed to be used in air, with an effective focal length of 200 mm.

This lens is available for purchase directly from Thorlabs, and the provided weblink indicates that it is currently in stock. With its high-quality materials, precise manufacturing, and versatile specifications, the LB1945-B is an excellent choice for a wide range of optical applications.