112-5235E 25.4 mm Dia. x -1000 mm FL; Uncoated; Plano-Concave Lens

The 112-5235E is a Plano-Concave Lens with a diameter of 25.4 mm and a focal length of -1000 mm, making it a negatively powered lens. This lens is sourced from EKSMA Optics, a reputable vendor known for its high-quality optical components. The lens is uncoated, indicating that it does not have any additional layers to enhance its optical properties or protect it from environmental factors.

The lens's geometry is characterized by its base shape, which is circular, and its thickness. The edge thickness is 3 mm, while the center thickness is slightly less at 2.8 mm. The lens's inner and outer radii are both zero, indicating a simple concave shape. The lens's effective focal length (EFL) is -1000 mm, which is the distance at which a collimated beam of light would be focused by the lens.

The lens is made from CAF2 (Calcium Fluoride), a material with the Mal-1963 designation. This material is known for its excellent transparency across a wide range of wavelengths, making it suitable for various optical applications. The lens is designed to operate at a wavelength of 2940 nm.