LB1450-A N-BK7 Bi-Convex Lens; Dia:0.5 in; f=20.0 mm ARC 350-700nm

The LB1450-A 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 0.5 inches (12.7 mm) and a focal length of 20.0 mm, making it suitable for use in systems where a moderate focal length is required. The lens has a double-convex geometry, with radii of curvature of 19.9 mm on both sides. This design provides a high degree of focusing power, making the lens ideal for use in imaging systems, beam shaping, and other applications where a tight focus is needed.

The lens has a central thickness of 3.9 mm and an edge thickness of 1.8 mm, providing excellent mechanical stability. The lens is coated with a broadband anti-reflection coating, designed to reduce surface reflections and increase transmission in the 350-700 nm range. This coating ensures that the lens delivers high-quality, high-contrast images, even in systems where multiple optical elements are used.

The LB1450-A is available for purchase directly from Thorlabs, and is in stock at the time of writing. With its high-quality construction, excellent optical properties, and versatile design, this lens is an excellent choice for a wide range of optical applications.