LB1374-A N-BK7 Bi-Convex Lens; Dia:2 in; f=150.0 mm ARC 350-700nm

The LB1374-A is a high-quality bi-convex lens, designed and manufactured by Thorlabs, a leading global supplier of photonics equipment. This lens, constructed from N-BK7 glass, is renowned for its excellent optical properties and versatility, making it suitable for a wide range of applications.

The lens boasts a diameter of 2 inches (50.8 mm) and a focal length of 150.0 mm. The bi-convex design, characterized by two spherical surfaces that curve outwards, provides a high degree of focusing power. This design also ensures minimal spherical aberration, a common issue in optical systems, thereby delivering a clear, sharp image.

The lens's geometry includes a thickness of 3 mm at the edge and 7.2 mm at the center. The effective focal length (EFL) is 150 mm, while the back focal length (BFL) is 147.6 mm. The radii of curvature for the first and second surfaces are 153.3 mm and -153.3 mm, respectively.

The lens is coated with a broadband anti-reflection coating (ARC), designed to operate between 350-700 nm. This coating reduces surface reflections, thereby increasing transmission and improving overall system performance.

The LB1374-A is available from Thorlabs and is currently in stock, according to their website. This lens is an excellent choice for those seeking a reliable, high-performance optical component for their system.