LD5451-E 12.7 mm Dia. CaF2 Double-Concave Lens; EFL=-15mm 2-5µm

The LD5451-E is a high-quality double-concave lens from Thorlabs, designed with a 12.7 mm diameter and a center thickness of 2.5 µm. This lens is made from Calcium Fluoride (CaF2) material, specifically the Mal-1963 variant, making it an excellent choice for applications that require excellent transmission in the deep UV to near-IR spectrum.

The lens features a double-concave geometry, with radii of curvature of -13.4 mm and 13.4 mm for the first and second surfaces, respectively. The effective focal length (EFL) of this lens is -15 mm, making it suitable for use in various optical systems that require concave lenses. The lens does not have any inner or outer radius specified, indicating a uniform curvature across the lens surface.

The LD5451-E comes with anti-reflection coatings on both the front and back surfaces, specifically the tho ecaf2arc20005000 coating. This coating is designed to provide high transmission and low reflection across a broad spectrum, from 200 nm to 5000 nm.

This lens is currently in stock and available for immediate shipping, as indicated by its weblink status. Users can find more information, including pricing and availability, by visiting the provided weblink.