LB5774-E 25.4 mm Dia. CaF2 Double-Convex Lens; EFL=25.4mm 2-5µm

The LB5774-E is a high-quality spherical lens, boasting a double-convex design and a 25.4 mm diameter. This lens is sourced from the renowned optical component manufacturer, Thorlabs. The lens is designed for use with a wavelength of 588 nm and features an effective focal length (EFL) of 25.4 mm, making it ideal for a wide range of optical applications.

The lens is crafted from Calcium Fluoride (CaF2) material, identified as "caf2 mal-1963" in the material database. This material is known for its excellent transparency in the ultraviolet, visible, and near-infrared regions of the spectrum. The lens's geometry includes a thickness of 2 mm at the edge and 11 mm at the center, providing a robust structure while minimizing optical aberrations.

The LB5774-E lens is coated with Thorlabs' ECaF2ARC20005000 coating on both the front and back surfaces. This anti-reflection coating is designed to reduce surface reflections and increase transmission, ensuring optimal performance in your optical system.

For those seeking detailed specifications, the lens's first radius of curvature (R1) is 20.2 mm, while the second radius (R2) is -20.2 mm. The lens's inner and outer radii are both 0 mm, indicating a uniform curvature throughout.