Cf-pc-50.8-100 50.8 mm Dia. CaF2 Plano-Concave Lens; EFL=-100mm Uncoated

This is a Cf-pc-50.8-100 50.8 mm Dia. CaF2 Plano-Concave Lens, sourced from Alkor Technologies. The lens has a diameter of 50.8 mm and a center thickness of 3 mm. It is designed with a negative focal length (EFL) of -100 mm, making it suitable for applications that require light convergence.

The lens is made of Calcium Fluoride (CaF2), a material with a Mal-1963 Material ID. This material is known for its excellent transparency in the ultraviolet, visible, and near-infrared regions of the spectrum. It has a refractive index of approximately 1.43 at 5000 Å, making it a popular choice for optical systems operating in these wavelength ranges.

The lens is spherical in shape, with a radius of curvature (R1) of -40.35 mm. The inner and outer radii are both zero, indicating that the lens is plano-concave. This shape is often used in optical systems to diverge or spread out light beams.

The lens does not come with any coating, as indicated by the empty 'coating' field in the item data. This means that it will have the standard surface properties of Calcium Fluoride, which can include some degree of scattering and absorption, particularly at the extremes of the ultraviolet and infrared regions.

According to the vendor's website, this item is currently in stock. For more information, you can visit the provided weblink: http://www.alkor.net/CaF2_plano_concave_lenses.html