LC5952 25.4 mm Dia. CaF2 Plano-Concave Lens; EFL=-200mm Uncoated

The LC5952 is a Plano-Concave Spherical Lens with a diameter of 25.4 mm, sourced from Thorlabs. This lens is designed for use in the visible light spectrum, specifically at a wavelength of 588 nm. The lens's geometry includes a center thickness of 3.5 mm and an effective focal length (EFL) of -200 mm, making it suitable for applications that require a concave lens.

The lens is made from 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 also has a relatively high Abbe number, making it a good choice for achromatic doublets.

Notably, this lens is uncoated. Coatings are often applied to lenses to enhance their performance by reducing reflection, increasing transmission, or providing protection from environmental factors. However, in this case, the lens is left uncoated, which may be desirable for specific applications where the natural properties of the CaF2 material are preferred.

The lens's geometry, material, and coating status make it a versatile component for various optical systems. However, as with any optical element, it's crucial to consider the specific requirements of your application to ensure the LC5952 is the right choice for your needs.