LB4837-A UV Fused Silica Bi-Convex Lens; Dia:1 in; f=250.0 mm ARC 350-700nm

The LB4837-A is a high-quality bi-convex lens made from UV fused silica, a material known for its excellent transparency in the ultraviolet region. This lens, sourced from Thorlabs, has a diameter of 1 inch (25.4 mm) and a focal length of 250.0 mm. The lens's geometry includes a center thickness of 2.7 mm and an edge thickness of 2 mm, providing a base shape that is circular.

The lens's design includes a front and back coating of THo A Bbar, which is an anti-reflection coating that covers the wavelength range of 350-700 nm. This coating helps to minimize surface reflections, thereby increasing the amount of light transmitted through the lens.

The lens's geometry also includes an effective focal length (EFL) of 250 mm and a back focal length (BFL) of 249.1 mm. The radii of curvature for the first and second surfaces are 229.6 mm and -229.6 mm, respectively. The lens's inner and outer radii are both 0, indicating a uniform curvature across the lens's surface.

This lens is a spherical lens, which means it has a surface that is a portion of a sphere. The spherical shape allows for a wide range of applications, including use in imaging systems, beam shaping, and other optical systems.