Jobs at Thermionics
Viewports
Thermionics viewports are mounted in UHV stainless steel flanges in the sizes noted below. Useable to below 1 x 10-11 Torr. Polished window surfaces offer a minimum of distortion and provide maximum light transmission. The custom viewports are available for special applications, i.e., special materials and/or optical properties. Viewport Specifications Useful Transmission Range in Microns--80% Minimum Bakeout Temperature Window-to-Sleeve Transition Zero profile wide angle glass 0.32 to 2.7 400°C Matched- expansion seal Nonmagnetic glass 0.32 to 2.7 400°C Housekeeper seal Quartz 0.29 to 2.0 200° max. Lead alloy (melts at 300°) Sapphire 0.25 to 5.5 450°C Brazed joint Ordering Information -- Zero Profile, Wide-Angle Viewports Model No. V Viewing Dia. Nom. Flange Size A Flange O.D. B Bolt Circle Dia. C Flange Thickness Glass Thickness Ship Wt. lbs. Price ZPV-075 0.625 1.33 1.33 1.062 0.285 0.062 1.0 Consult Factory ZPV-100 0.625 2.12 2.12 1.625 0.470 0.062 1.0 ZPV-150 1.40 2.75 2.75 2.312 0.500 0.105 1.0 ZPV-200 1.40 3.37 3.37 2.850 0.625 0.105 2.0 ZPV-250 2.69 4.50 4.50 3.628 0.680 0.175 4.0 ZPV-300 2.69 4.62 4.62 4.030 0.750 0.175 5.0 ZPV-400 3.88 6.00 6.00 5.128 0.780 0.200 6.0 ZPV-500 3.88 6.75 6.75 5.969 0.840 0.200 7.0 ZPV-600 5.38 8.00 8.00 7.128 0.880 0.375 9.0 ZPV-800 5.38 8.00 10.0 9.128 0.970 0.375 10.0 Ordering Information -- Non-magnetic Viewports Model No. V Viewing Dia. Nom. Flange Size A Flange O.D. B Bolt Circle Dia. C Flange Thickness Glass Thickness H Window- Sleeve Extension Ship Wt. lbs. Price NMV-150 1.37 2.75 2.75 2.312 0.50 0.120 1.75 1.0 Consult Factory NMV-250 2.50 4.50 4.50 3.628 0.75 0.120 1.75 4.5 NMV-400 3.50 6.00 6.00 5.128 0.84 0.220 1.75 6.0 NMV-600 5.38 8.00 8.00 7.128 0.94 0.220 2.00 10.0 Ordering Information -- Quartz Viewports Model No. V Viewing Dia. Nom. Flange Size A Flange O.D. B Bolt Circle Dia. C Flange Thickness Glass Thickness H Window- Sleeve Extension Ship Wt. lbs. Price QVP-150 1.37 2.75 2.75 2.312 0.50 0.125 0.56 3.0 Consult Factory QVP-250 2.37 4.50 4.50 3.628 0.75 0.250 0.78 6.0 QVP-400 3.84 6.00 6.00 5.128 0.84 0.250 1.00 9.0 QVP-600 5.78 8.00 8.00 7.128 0.94 0.375 1.31 13.0 QVP-800 7.78 10.00 10.00 9.128 0.97 0.375 1.49 17.0 Ordering Information -- Sapphire Viewports Model No. V Viewing Dia. Nom. Flange Size A Flange O.D. B Bolt Circle Dia. C Flange Thickness H Window- Sleeve Extension Ship Wt. lbs. Price SVP-075 0.625 1.33 1.33 1.060 0.28 0.062 0.5 Consult Factory SVP-100 1.000 2.75 2.75 2.312 0.50 0.062 2.0 SVP-200 2.000 4.50 4.50 3.628 0.75 0.125 4.0
The custom viewports are available for special applications, i.e., special materials and/or optical properties.
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