LB1475 N-BK7 Bi-Convex Lens; Dia:1 in; f=750.0 mm Uncoated

The LB1475 N-BK7 Bi-Convex Lens is a high-quality optical component sourced from Thorlabs, a leading vendor in the field of precision photonics. This lens, with a diameter of 1 inch and a focal length of 750.0 mm, is designed for use in a wide range of optical systems, including imaging, beam shaping, and laser applications.

The lens is made of N-BK7, a popular glass type known for its excellent optical properties. This material, also known as BK7, is a borosilicate crown glass with a low refractive index and low dispersion, making it an ideal choice for many optical applications. The lens is uncoated, meaning it does not have any additional layers to enhance its optical properties. However, uncoated lenses can still provide high-quality performance in many applications.

The geometry of the lens includes a diameter of 25.4 mm, an edge thickness of 2 mm, and a center thickness of 2.2 mm. The effective focal length (EFL) is 750.0 mm, and the back focal length (BFL) is 749.3 mm. The radii of curvature for the first and second surfaces are 772.2 mm and -772.2 mm, respectively. The lens has no inner or outer radius, indicating a uniform thickness across the lens.