This is the PLCX-50.8-206.0-UV, a Plano-Convex Spherical Lens with a diameter of 50.8 mm, sourced from CVI Laser Optics. The lens is designed for use with a wavelength of 266 nm and is made from UVFS material, specifically identified as UVFS MAL-1965.
The lens's geometry is characterized by its edge thickness of 4.8 mm and center thickness of 6.4 mm. The effective focal length (EFL) is 412.3 mm, making it suitable for a variety of optical applications. The lens's curvature is defined by a radius (R1) of 206 mm, with no inner or outer radius specified.
The lens is uncoated, which means it does not have any additional layers to enhance its optical properties. This may be suitable for applications where specific coatings are not required or desired.
The lens's status is "in stock" as of the last update, and more detailed information can be found in the provided weblink. This lens is a part of a larger catalog of spherical lenses available at 3DOptix.