LE4984 50.8 mm Dia. UVFS Positive Meniscus Lens; EFL=300mm Uncoated

The LE4984 is a spherical lens with a convex-concave design, sourced from the renowned optical component manufacturer, Thorlabs. This lens boasts a base shape of a circle, with a diameter of 50.8 mm, making it suitable for a wide range of optical applications.

The lens has a center thickness of 5.4 mm and an edge thickness of 3 mm, providing robustness and durability. The effective focal length (EFL) of this lens is 300 mm, which is a significant factor in determining the lens's magnification and field of view. The back focal length (BFL) is 294.8 mm, which is the distance from the lens's rear surface to the image plane in a typical imaging system.

The LE4984 is made from UVFS material with the Mal-1965 index. The radius of curvature for the first surface (R1) is 97.6 mm, while the second surface (R2) has a radius of 327.6 mm. Notably, this lens does not have any coating, which may affect its performance in certain applications, particularly those requiring high transmission or low reflectivity.

The lens is designed to operate at a wavelength of 588 nm. The provided web link leads to Thorlabs' product page, where users can find more detailed specifications, pricing, and availability information.