The 131-1578 is a UVFS Precision Plano-Convex Axicon Prism, sourced from the reputable optical components vendor, EKSMA Optics. This axicon prism boasts a diameter of 50.8 mm and a thickness of 3.5 mm at the edge, while the center thickness measures 5.4 mm. The apex angle of this axicon is 3.1066860685499065 degrees, and it features a convex geometry.
The material ID of this axicon prism is UVFS Mal-1965. It is designed to operate at a wavelength of 633 nm. The prism does not come with any coating, as indicated by the empty 'coating' field in the item data.
This axicon prism is available for purchase directly from the EKSMA Optics website, and the link provided in the item data indicates that it is currently in stock. The detailed specifications and availability make this axicon prism a suitable choice for various optical applications.