LF5807 25.4 mm Dia. CaF2 Negative Meniscus Lens; EFL=-750mm Uncoated

The LF5807 is a spherical lens from Thorlabs, featuring a concave-convex base shape and a circular geometry. With a diameter of 25.4 mm, it is designed for use in optical systems that require a negative meniscus lens. The lens has a center thickness of 4 mm and an edge thickness of 4.3 mm, providing a robust and stable platform for optical applications.

The effective focal length (EFL) of the LF5807 is -750mm, making it suitable for applications that require a long focal length. The first radius of curvature (R1) is 328.2 mm, while the second radius of curvature (R2) is 158.1 mm. The back focal length (BFL) is -747.3 mm, which is crucial for determining the lens's position in an optical system.

The LF5807 is made of CaF2 (Calcium Fluoride) material, identified as mal-1963 in the Material ID. This material is known for its excellent transparency in the ultraviolet, visible, and near-infrared regions of the spectrum, making it suitable for a wide range of optical applications.

The lens is uncoated, which means it does not have any anti-reflective or other coatings. This may result in higher reflective losses and a lower transmission compared to coated lenses. However, uncoated lenses are often preferred in specific applications where the coating may interfere with the optical properties of the system.

The LF5807 is designed for use at a wavelength of 4000 nm. It is currently in stock and available for purchase through the provided weblink.