LB4330-UV 25.4 mm Dia. UVFS Double-Convex Lens; EFL=75mm 245-400nm

The LB4330-UV is a high-quality spherical lens from Thorlabs, designed with a double-convex geometry and a circular base shape. This lens boasts a diameter of 25.4 mm and a center thickness of 4.4 mm, making it a robust and durable choice for various optical applications. The lens's edge thickness is 2 mm, contributing to its overall structural integrity.

The effective focal length (EFL) of this lens is 75 mm, which is a versatile length for many optical systems. The first radius of curvature (R1) is 68.3 mm, while the second radius of curvature (R2) is -68.3 mm, indicating the double-convex nature of the lens. The inner and outer radii are both 0 mm, suggesting a uniform curvature throughout the lens.

This lens is made from UVFS, a material with the material ID "uvfs mal- 1965". It is designed to work optimally with a wavelength of 588 nm. The lens features a UV-optimized broadband antireflection coating, denoted as "tho uvfs uv bbar" on both the front and back surfaces. This coating enhances the lens's performance in the ultraviolet region of the spectrum, making it ideal for applications that require UV transmission.