Sapphire Viewports – UV Grade

sapphire-viewport

Sapphire Viewports – UV Grade

£118£1,176

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Technical Specs

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
___________________________________________
* – 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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