LB1027-B N-BK7 Bi-Convex Lens; Dia:1 in; f=40.0 mm ARC 650-1050nm

The LB1027-B 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 optical components.

The lens features a diameter of 1 inch (25.4 mm) and a focal length of 40.0 mm, providing a moderate magnification and a wide field of view. The bi-convex design, characterized by two spherical surfaces that curve outwards, offers superior light gathering capabilities and minimal spherical aberration. This makes the LB1027-B an excellent choice for applications that require high light transmission and sharp image focus.

The lens is coated with a broadband anti-reflection coating, specifically designed for the 650-1050nm range. This coating significantly reduces surface reflections, improving light transmission and enhancing the overall performance of the lens. The coating is applied to both the front and back surfaces of the lens, ensuring optimal performance from all angles.

The lens has a central thickness of 6.1 mm and an edge thickness of 2 mm, providing excellent mechanical stability and resistance to deformation. The lens is also AR-coated, further enhancing its optical performance by reducing surface reflections and increasing light transmission.