LB1811-B N-BK7 Bi-Convex Lens; Dia:1 in; f=35.0 mm ARC 650-1050nm

The LB1811-B is a high-quality bi-convex lens, designed and manufactured by the renowned optical components supplier, Thorlabs. This lens, constructed from the widely-used N-BK7 glass, is a spherical lens with a convex-convex base shape, ensuring excellent light transmission and focus.

The lens boasts a one-inch diameter, providing a versatile size suitable for various optical applications. The center thickness measures 6.8mm, while the edge thickness is 2mm, offering robustness and durability. The effective focal length (EFL) of this lens is 35mm, which, combined with its shape, facilitates a narrow beam divergence and precise focusing capabilities.

The LB1811-B features a broad wavelength range of 650-1050nm, making it suitable for a wide array of applications within this spectrum. The lens is coated with a broadband anti-reflection coating (ARC), specifically designed for the wavelength range of 650-1050nm, further enhancing its performance by minimizing surface reflections and increasing overall transmission.

This lens is available with a circular base shape, ensuring ease of integration into various optical systems. The inner and outer radii are both 0mm, indicating a symmetrical curvature that contributes to the lens's high-performance optical characteristics.