Sapphire Viewports – UV Grade

sapphire-viewport

Sapphire Viewports – UV Grade

£118£1,176

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TECHNICAL SPECS – CLICK HERE

Sapphire Viewports – UV Grade

These viewports employ a synthetic single crystal sapphire as the window material. Single crystal synthetic sapphire displays very different optical, physical and thermal characteristics depending upon the direction of the axis of the crystal structure. LewVac’s sapphire viewports are offered as standard with the crystal axis at 90°, i.e. parallel to the surface of the viewport. 0° crystal orientation versions are available upon request

Features:
UHV Compatible.
Bakeable to 450°C.
Window material is cut at right angles to optical axis. (Parallel available on request).

Specifications:
Materials
Window : Sapphire, single crystal
Carrier : Kovar®
Flanges : St.St.

Max. Bakeout Temperature* :
CF flanged viewports : 250°C
KF flanged viewports : 150°C
Weldable viewports : 450°C

Max. Thermal Gradient : 25°C per minute

Optical properties
Crystal orientation : 0-90°
Surface finish : 50/20 scratch/dig
UV transmission @ 250nm (external) : 50%
parallelism : <3 arc minutes
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* – Assembly rating is reduced to that of the lowest rated component.

Anti-Reflective Coating :- Anti-reflective coatings are available, please call our sales office to discuss your specific requirements.


Product CodeFig.FlangeABCDEFPriceQuantityPDF & STP
SVP-UV-14.9-16CF1DN16CF14.91.62.515.212.7- £168
SVP-UV-17.5-40CF 2 DN40CF 17.5 2.0 2.0 19.6 -- £189
SVP-UV-23.8-40CF 2 DN40CF 23.8 2.0 2.0 25.9 -- £215
SVP-UV-36.5-40CF 2 DN40CF 36.5 2.0 3.3 38.6 -- £504
SVP-UV-36.5-63CF 2 DN63CF 36.5 2.0 3.3 38.6 -- £504
SVP-UV-49.2-63CF 2 DN63CF 49.2 2.42.5 51.3 -- £588
SVP-UV-14.9-16KF 3 DN16KF14.91.6 3.315.212.7- £168
SVP-UV-15.2-25KF 3 DN25KF 15.21.6 7.8 15.9 9.7- £177
SVP-UV-17.5-40KF 4 DN40KF 17.5 2.0 3.3 19.612.7- £189
SVP-UV-23.8-40KF 4 DN40KF 23.8 2.0 3.3 25.912.7- £210
SVP-UV-23.8-50KF 4 DN50KF 23.8 2.0 3.3 25.912.7- £215
SVP-UV-14.9-SW 5 WELD14.91.6 2.3 16.7 10.9- £139
SVP-UV-8.6-SW 6 WELD 8.61.6 0.8 9.6 7.9 15.6 £118
SVP-UV-11.6-SW 6 WELD 11.61.6 0.8 11.7 7.1 18.8 £139
SVP-UV-17.5-SW 7 WELD 17.5 2.0 19.5 24.8 11.2- £152
    SVP-UV-23.8-SW 7 WELD 23.8 2.0 25.9 31.8 11.2- £160
      SVP-UV-36.5-SW 7 WELD 36.5 2.0 38.6 44.5 11.2- £399
        SVP-UV-49.2-SW 7 WELD 49.2 2.4 51.3 56.4 13.0- £437
          SVP-UV-17.5-AW 8 WELD 17.5 2.0 19.5 38.1 11.2- £177
          SVP-UV-23.8-AW 8 WELD 23.8 2.0 25.9 38.1 11.2- £198
          SVP-UV-36.5-AW 8 WELD 36.5 2.0 38.6 63.5 12.4- £437
          SVP-UV-49.2-AW 8 WELD 49.2 2.4 51.3 63.5 13.7- £462
          SVP-UV-74.9-AW 8 WELD 74.9 3.2 76.7 88.9 14.0- £1,176
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