LC4210-A 12.7 mm Dia. UVFS Plano-Concave Lens; EFL=-25mm 350-700nm

The LC4210-A is a plano-concave lens with a diameter of 12.7 mm, making it a compact and versatile optical component. This lens is designed for use in the ultraviolet to visible spectrum, with a wavelength of 588 nm, and is sourced from the reputable vendor Thorlabs. The lens's concave shape, with a radius of curvature (R1) of -11.5 mm, contributes to its unique optical properties.

The lens has an effective focal length (EFL) of -25 mm, which is unusual but beneficial in certain applications. A negative EFL indicates that the lens diverges light, making it suitable for use in beam expanders, objective lenses, or other applications where light divergence is required.

The lens is made from UVFS material, identified as MAL-1965 in the material database. This material is known for its excellent transmission properties in the UV and visible spectra, making it an ideal choice for applications in these wavelength ranges.

The lens features anti-reflection coatings on both the front and back surfaces, identified as THo A BBAR. These coatings are designed to reduce surface reflections and increase transmission, thereby improving the overall efficiency and performance of the lens.