LF5175 25.4 mm Dia. CaF2 Negative Meniscus Lens; EFL=-150mm Uncoated

The LF5175 is a spherical lens with a concave-convex base shape and a circular geometry, sourced from the reputable vendor Thorlabs. This lens boasts a diameter of 25.4 mm and a thickness of 5.5 mm at the edge, tapering down to 4 mm at the center. The effective focal length (EFL) of this lens is -150 mm, making it a negative meniscus lens.

The lens is crafted from Calcium Fluoride (CaF2) material, specifically 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, making it suitable for a wide range of optical applications.

The LF5175 operates at a wavelength of 4000 nm. It has an inner radius of 0 mm and an outer radius of 0 mm, indicating a uniform curvature throughout. The back focal length (BFL) of this lens is -147.3 mm.

Please note that this lens is uncoated. Coatings are often applied to lenses to enhance their performance by reducing reflection, increasing transmission, or providing protection against environmental factors. However, this lens, in its uncoated state, offers a more basic functionality, which may still be suitable for certain applications.

For more information, including pricing and availability, please refer to the vendor's website using the provided web link.