LB1723-C N-BK7 Bi-Convex Lens; Dia:2 in; f=60.0 mm ARC 1050-1700nm

The LB1723-C is a high-quality bi-convex lens from Thorlabs, designed for use in a wide range of optical applications. This lens is fabricated from N-BK7, a popular borosilicate glass known for its excellent optical properties, making it an ideal choice for applications that require high-performance glass.

The lens features a diameter of 2 inches (50.8 mm) and a focal length of 60.0 mm, providing a beam focal length (BFL) of 55 mm. The lens has a double-convex shape, with radii of curvature (R1 and R2) of 59.3 mm and -59.3 mm, respectively. This shape allows for efficient light collection and focusing, making it suitable for use in imaging systems, beam shaping, and other applications where precise light control is required.

The LB1723-C is coated with Thorlabs' Broadband Anti-Reflection Coating (ARC), designed to reduce surface reflections and increase transmission across the 1050-1700 nm wavelength range. This coating ensures optimal performance in near-infrared (NIR) applications, such as fiber optics, spectroscopy, and laser systems.

The lens has a central thickness of 2.5 mm and an edge thickness of 3 mm, providing excellent mechanical stability and resistance to damage from handling or environmental factors. The lens is also available with a variety of mounting options, allowing for easy integration into existing optical systems.