The optical germanium lenses Diaries
The optical germanium lenses Diaries
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Ge is usually appealing for its lower optical dispersion and as a consequence extremely small chromatic dispersion in it’s transmission spectrum.
fiveµm. This leaves germanium as the best and only option for brutally hard IR purposes. This is typically why you will note germanium Home windows and lenses serving in spots as inhospitable as outer Room, battlefields and in the midst of superior-driven CO2 laser programs. Extra on this afterwards.
Germanium has superb thermal security. It can stand up to large working temperatures with no degrading optical effectiveness.
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We offer aircraft, spherical, aspherical, cylindrical and toric mirrors for a variety of programs. They are really made and created by Jenoptik to meet your precise specifications. On top of that to conventional substrate resources, we also use metallic substrates.
Both monocrystalline and polycrystalline Ge could possibly be useful for manufacturing of optical elements. We develop Germanium lenses and Home windows for infrared thermal imaging applications and pyrometry (see our webpage Germanium Home windows and lenses for thermography).
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On the other hand, this is where they start diverging. Silicon is far lighter which has a density of 2.33g/cm3, rendering it ideal for body weight-sensitive programs and less than 50 percent the density of germanium. Furthermore, it is much more thermally resistant than germanium and having a Knoop Hardness of 1150 It is usually tougher and fewer brittle. Silicon also fees significantly less rendering it a much better candidate in various applications.
One particular quite common situation we see germanium utilized is within large and lower pace wind tunnels for jet propulsion experiments. Commonly, these Home windows are more info much larger than stock configurations achieving sizes in surplus of one hundred ninety-200mm.
These substantial-high quality cylinder optics are ideal for use in laser scanning, laser projection, beam homogenization and PCB fabrication. Also they are a fantastic solution in fault Examination.
Coatings from Jenoptik enable you to tutorial beams within a specific way. They filter distinct wavelengths, mirror optics or redirect them and lessen reflection if essential. We offer the following:
Recognizing the distinction between the different lens sorts might help pick which one particular to use when so that you can get most troubleshooting details.
Germanium was first utilized on a big scale to switch Among the most essential Digital parts, the diode.