Sapphire Viewports – DUV Grade

sapphire-viewport

Sapphire Viewports – DUV Grade

£0£988

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TECHNICAL SPECS – CLICK HERE

Sapphire Viewports – DUV 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 DUV sapphire viewports are offered as standard with the crystal axis at 0°, i.e. parallel to the surface of the viewport. (UV – Random crystal orientation versions are available, as are versions with 90° orientation on request)

Features:
UHV Compatible.
Bakeable to 450°C.

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

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

Max. Thermal Gradient : 25°C per minute

Optical properties
Crystal orientation : 0°
Surface finish : 20/10 scratch/dig
UV transmission @ 248nm (internal) : 99.8%
parallelism : <10 arc seconds
Homogeneity grade : A
Inclusion class : 0
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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.FlangeABCDEPriceQuantityPDF & STP
SVP-DUV-17.5-40CF 1 DN40CF 17.5 2.0 2.0 19.6 - P.O.A
    SVP-DUV-23.8-40CF 1 DN40CF 23.8 2.0 2.0 25.9 - £340
    SVP-DUV-36.5-40CF 1 DN40CF 36.5 2.0 3.3 38.6 - £689
    SVP-DUV-36.5-63CF 1 DN63CF 36.5 2.0 3.3 38.6 - £821
    SVP-DUV-49.2-63CF 1 DN63CF 49.2 2.4 2.5 51.3 - £988
    SVP-DUV-17.5-AW 2 WELD 17.5 2.0 19.5 38.1 11.2 P.O.A
      SVP-DUV-23.8-AW 2 WELD 23.8 2.0 25.9 38.1 11.2 £320
      SVP-DUV-36.5-AW 2 WELD 36.5 2.0 38.6 63.5 11.7 £740
      SVP-DUV-49.2-AW 2 WELD 49.2 2.4 51.3 63.5 13.7 £837
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