eSource Optics Broadband VUV-UV Beamsplitters (BBVUVBS) are Metallic VUV-UV broadband beamsplitter coatings that are designed to provide 40% to 50% average Reflectance and Transmission over the 170nm to 300nm VUV-UV wavelength range @ 45 degrees Angle of Incidence (AOI) Unpolarized. Available sizes are 12.7mm, 25.4mm & 50.8mm Diameter.