LB4837-UV 25.4 mm Dia. UVFS Double-Convex Lens; EFL=250mm 245-400nm

The LB4837-UV is a double-convex lens with a diameter of 25.4 mm, designed for use in the ultraviolet spectrum with a wavelength of 588 nm. This lens is sourced from Thorlabs, a reputable vendor known for their high-quality optical components.

The lens features a double-convex geometry, meaning it has two spherical surfaces that curve outwards. This design is characterized by its EFL (Effective Focal Length) of 250 mm, which is the distance from the lens's secondary focal point to its center. The lens's thickness at the edge is 2 mm, while its center thickness is 2.7 mm, providing a robust structure for various applications.

The LB4837-UV is made from UVFS, a material with a refractive index suitable for ultraviolet light. The lens's front and back surfaces are coated with THo UVFS UV BAR, a coating specifically designed to enhance its performance in the UV spectrum. This coating ensures high transmission and low reflection, making it ideal for applications that require high-quality UV light transmission.

The lens's inner and outer radii are 0, indicating a symmetrical design. The first radius of curvature (R1) is 229.6 mm, while the second radius of curvature (R2) is -229.6 mm. This design ensures excellent image quality and low distortion.