Type: Optical Window 
Material: VUV CaF2
Form: Single Crystal
Orientation: Random 
Diameter 10.0 +/-0.05 mm 
Thickness: 3.0 +/-0.05 mm
Surface Quality: 20/10 S/D both sides
Surface Flatness: 1/2 λ @ 632.8nm both sides
Clear Aperture: ≥ 80% Central Diameter 
Parallelism: ≤ 2 arc minutes
Transmission: T > 90% @ 190nm 

                                                

                                                   
         eSource Optics / PMB 126, 1225 Providence Rd, Whitinsville, MA 01588

       VUV-UV Optical Filters & Mirrors/ VUV-UV Windows/Lenses & Prisms