CF275-ZLVP-ZNSE-0.90

CF275 Zinc Selenide Viewport

Description

• Zinc selenide (ZnSe) viewport
• UHV rated vacuum optics
• 0.90″ view diameter
• 2.75″ ConFlat flange
• Vacuum-optics w/ zinc selenide window
• Bakeable to 200°C
• Stainless steel housing and flange
• UHV compatible

Specifications

• Flange material: 304 stainless steel
• Window material: Zinc selenide
• TWD < 1λ @ 632nm (peak to valley)
• Parallelism: < 3 arc minutes
• Surface finish: 40/20 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