ConFlat (CF) DUV Grade (Laser) Fused Silica Viewport


  • DUV grade (laser) fused silica viewport
  • Zero-length profile
  • ConFlat flange
  • Laser grade fused silica windows
  • Bakeable to 200°C
  • Non-magnetic materials
  • Excellent transmission for UV to 248nm
  • UHV compatible



  • Flange material:
    • 316L stainless steel (1.33″)
    • 304 stainless steel (2.75″ to 6.00″)
  • Window material: Corning HPFS 7980 fused silica or equivalent
  • TWD < λ/4 @ 632nm (peak to valley)
  • Parallelism:
    • < 30 arc seconds (1.33″)
    • < 10 arc seconds (2.75″ to 6.00″)
  • Surface finish: 20/10 scratch-dig
  • Thermal range: -100°C to 200°C
  • Bake-out ramp rate: 20°C per minute
  • Homogeneity grade: A
  • Inclusion class: 0
  • Leak rate < 1 X 10-9 atm-cc/sec He


Available Options: Call for price and delivery

  • All Titanium Viewports
  • Weld Adapters
  • Re-entrant Designs
  • ISO Flanges
  • AR Coating for 1550nmAR Coating for 808nm
  • Dual AR Coatings
  • EUV Grade (Excimer) Viewports
  • IR Grade (Low OH) Viewports
  • Geochronological Viewports
  • Custom viewports and coatings

*Dimensions are in inches unless otherwise specified

Part IDReference NumberDescription Flange Size View Diameter 3D CADDrawingUnit PriceIn StockQty, Add To Cart
Part ID9118040Reference NumberCF133-ZLVP-Q-DUV-0.63Description CF133 DUV Grade (Laser) Fused Silica Viewport Flange Size 1.33View Diameter 0.633D CADLoginDrawingLoginUnit Price$385.00Contact
Part ID9118041Reference NumberCF275-ZLVP-Q-DUV-1.40Description CF275 DUV Grade (Laser) Fused Silica Viewport Flange Size 2.75View Diameter 1.43D CADLoginDrawingLoginUnit Price$440.00Contact
Part ID9118042Reference NumberCF450-ZLVP-Q-DUV-2.69Description CF450 DUV Grade (Laser) Fused Silica Viewport Flange Size 4.5View Diameter 2.693D CADLoginDrawingLoginUnit Price$1,165.00Contact
Part ID9118043Reference NumberCF600-ZLVP-Q-DUV-3.88Description CF600 DUV Grade (Laser) Fused Silica Viewport Flange Size 6View Diameter 3.883D CADLoginDrawingLoginUnit Price$1,700.00Contact