Vacuum Fittings Feedthroughs - Granzow
Vacuum Fittings Feedthroughs - Granzow
Vacuum Fittings Feedthroughs - Granzow
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CF-Sapphire Observation Windows<br />
Transmissivity [%]<br />
––––– Sapphire<br />
–– · –– Kodial<br />
- - - - - Borosilicate<br />
Wavelength [nm]<br />
Optical transmissivity for the UHV Sapphire observation windows<br />
All UHV observation windows with CF<br />
flanges are of a flat and embedded<br />
design (Zero-length design). This<br />
design provides a much wider viewing<br />
angle compared to observation windows<br />
manufactured according to a pottype<br />
design.<br />
The transmission range of sapphire lies<br />
between 250 nm and 5500 nm. The<br />
infrared limit is shifted far into the infrared<br />
range. Therefore these observation<br />
windows are used, for example, in<br />
solar simulation tests, laser experiments,<br />
high-temperature plasma research<br />
and spectrophotometric measurements.<br />
Standard types of glass are normally<br />
used for visual observations, for taking<br />
photographs of experimental details<br />
and, among other things, for pyrometric<br />
measurements.<br />
Advantages to the User<br />
- Embedded design<br />
- Optically plane-parallel almost up to<br />
the glass/metal seal<br />
- Flange offering a wide viewing angle<br />
s<br />
α<br />
d<br />
h<br />
50<br />
Dimensional drawing for the UHV sapphire observation<br />
windows<br />
Technical Data<br />
DN<br />
CF<br />
Thickness of the glass (s)<br />
mm<br />
Diameter of viewing area (d)<br />
mm<br />
Viewing angle (a) °<br />
Spacing of the glass (h), approx.<br />
mm<br />
Viewing distance<br />
mm<br />
Wavelength range<br />
nm<br />
Mean transmission ratio %<br />
Verwendete Glassorte<br />
Max. heating rate<br />
min<br />
Max. bakeout temperature °C<br />
Ordering information<br />
UHV sapphire observation windows Part No.<br />
40<br />
3.0<br />
23<br />
23<br />
10<br />
50<br />
250 to 5500<br />
> 80<br />
Sapphire<br />
5<br />
400<br />
210 122<br />
Oerlikon Leybold <strong>Vacuum</strong> Full Line Catalog<br />
45 C13
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