The LC5269-E is a Plano-Concave Spherical Lens with a diameter of 25.4 mm, manufactured by Thorlabs. This lens is designed for use with a wavelength of 588 nm and features a center thickness of 2 mm and an effective focal length (EFL) of -40 mm. The lens's concave surface has a radius of curvature (R1) of -17.4 mm, while its convex surface has an infinite radius, denoted as 0.
The lens is made of 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 is coated with AR coating on both sides (tho ecaf2arc20005000), which reduces reflection and increases transmission, making it suitable for high-power applications. The coating is designed to provide high transmission from 200 to 5000 nm.
This lens is currently in stock and available for immediate shipping. For more information, please refer to the vendor's website at https://www.thorlabs.com/thorproduct.cfm?partnumber=LC5269-E.