Apex Vacuum

Extended Range UHV Calcium Fluoride Viewports


Calcium Fluoride (CaF2) Viewport, UHV Rated Vacuum Optics, 0.40″ View Dia, 1.33″ Conflat Flange

  • Vacuum-Optics w/ Calcium Fluoride Window
  • Bakeable to 200 degrees C
  • Stainless Steel Housing & Flange
  • Compatible with UHV

More Information Below.



We offer metal sealed (CF Flange), extended-range optics in 1 inch and 2 inch view diameters with a combined range of transmission from 120nm to 20 microns.

  • Flange Material: 304/316 Stainless Steel
  • Surface Finish: 20/10 Scratch/Dig
  • Flatness: l /4@ 632 nm Transmitted Wavefront
  • Leak Rate: <2×10(-10) atm cc/sec He
  • Thermal Range: -100°C to 200°C

Additional information


2.75CF, 4.50CF

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