Sapphire Viewports – DUV Grade

sapphire-viewport

Sapphire Viewports – DUV Grade

£236£819

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Technical Specs

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 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.

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°
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-17.5-40CF1 DN40CF 17.5 2.0 2.0 19.6- £248
    SVP-DUV-23.8-40CF1 DN40CF 23.8 2.0 2.0 25.9- £282
      SVP-DUV-36.5-63CF1 DN63CF 36.5 2.0 3.3 38.6- £681
        SVP-DUV-49.2-63CF1 DN63CF 49.2 2.42.5 51.3- £819
          SVP-DUV-17.5-AW 2 WELD 17.5 2.0 19.5 38.1 11.2 £236
            SVP-DUV-23.8-AW 2 WELD 23.8 2.0 25.9 38.1 11.2 £265
              SVP-DUV-36.5-AW 2 WELD 36.5 2.0 38.6 63.5 11.7 £614
                SVP-DUV-49.2-AW 2 WELD 49.2 2.4 51.3 63.5 13.7 £693
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