LD5138-E 25.4 mm Dia. CaF2 Double-Concave Lens; EFL=-30mm 3-5µm

The LD5138-E is a high-quality double-concave lens, boasting a 25.4 mm diameter and a center thickness of 2.5 mm. This lens is designed for use with a wavelength of 588 nm and features a high-performance anti-reflection coating (AR) on both the front and back surfaces, specifically the tho ecaf2arc20005000 coating. This coating enhances the lens's efficiency by minimizing surface reflections, thereby reducing signal loss and improving overall system performance.

The lens's effective focal length (EFL) is -30 mm, indicating its double-concave nature. The first radius of curvature (R1) is -26.4 mm, while the second radius of curvature (R2) is 26.4 mm. The lens is made of Calcium Fluoride (CaF2), a material with a high transparency in the ultraviolet, visible, and near-infrared regions of the spectrum. This makes the LD5138-E suitable for a wide range of applications, including but not limited to, beam shaping, focusing, and collimation in various optical systems.

The lens is sourced from Thorlabs, a reputable vendor known for its high-quality optical components. According to the vendor's information, the lens is currently in stock, ensuring quick delivery upon order. The provided web link offers more detailed information about the product, including pricing and additional specifications.