LC4413-UV 12.7 mm Dia. UVFS Plano-Concave Lens; EFL=-75mm 245-400nm

The LC4413-UV is a plano-concave lens with a diameter of 12.7 mm, making it suitable for applications requiring compact optical components. This lens is fabricated from UVFS material, a type of optical glass specifically designed for use in the ultraviolet spectrum, with a wavelength of 588 nm. The lens features a concave front surface with a radius of curvature of -34.5 mm and a flat back surface, contributing to its plano-concave shape.

The lens has an effective focal length (EFL) of -75 mm, which is a measure of the lens's ability to focus light. A negative EFL, as in this case, indicates a diverging lens, which spreads out light rays. This property makes the LC4413-UV ideal for use in applications where light needs to be spread over a larger area, such as in beam expanders or in illumination systems.

The lens features broadband anti-reflection coatings on both the front and back surfaces, specifically the THORLABS UVFS UV BBAR coating. This coating is designed to minimize surface reflections and increase transmission in the ultraviolet spectrum, enhancing the lens's performance in its intended application range of 245-400 nm.

The lens has a center thickness of 3.5 mm, providing a good balance between mechanical robustness and optical performance. The lens is sourced from Thorlabs, a reputable vendor known for its high-quality optical components. According to the vendor's website, the lens is currently in stock, indicating its availability for immediate purchase and use.