ConFlat (CF) Calcium Fluoride (CaF2) Viewport


  • Calcium fluoride (CaF2) viewport
  • UHV rated vacuum optics
  • 0.90″ view diameter
  • 2.75″ ConFlat flange
  • Vacuum-optics with calcium fluoride window
  • Bakeable to 200°C
  • Stainless steel housing and flange
  • UHV compatible


  • Flange material: 304 stainless steel
  • Window material: Single crystal calcium fluoride
  • TWD < λ/4 @ 632nm (peak to valley)
  • Parallelism: < 3 arc minutes
  • Surface finish: 20/10 scratch-dig
  • Thermal range: -100°C to 200°C
  • Bake-out ramp rate: 20°C per minute
  • Leak rate < 1 X 10-9 atm-cc/sec He

*Dimensions are in inches unless otherwise specified

Part IDReference NumberDescription Flange Size View Diameter 3D CADDrawingUnit PriceIn StockQty, Add To Cart
Part ID9118063Reference NumberCF275-ZLVP-CAF2-0.90Description CF275 Calcium Fluoride (CaF2) ViewportFlange Size 2.75View Diameter 0.93D CADLoginDrawingLoginUnit Price$730.00Contact