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Typical applications for Germanium window

Typical applications for Germanium include thermal imaging where the material can be used as a front optic while its index of refraction makes Germanium useful for wide-angle lenses and microscopes.

Germanium window

Typical applications for Germanium include thermal imaging where the material can be used as a front optic while its index of refraction makes Germanium useful for wide-angle lenses and microscopes. Additionally, Germanium components can be used for FLIR (Forward Looking Infrared) and FTIR (Fourier Transformed Infrared) spectroscopy systems, alongside other analytical instruments.

Germanium transmits over 45% between 2-14μm up to 45⁰C but transmission degrades slowly at 100⁰C then more rapidly above 200⁰C. Exposure to higher temperatures can lead to catastrophic failure in the material so Germanium is unsuitable for use in these conditions. Additionally, its relatively high density should be considered where weight is an issue. Germanium has a hardness of HK780, slightly higher than GaAs with which it shares similar mechanical properties.

Ebetter Optical stock a range of Germanium Windows DLC/AR coated for 7-12 µm, we can also offer custom Germanium windows to your specific requirement. Other Germanium components we can also offer are, Germanium lenses, Germanium prisms, and Germanium blanks to your specification for a range of applications. Every component is individually tested by our highly skilled technicians in our state of the art metrology lab to ensure all components meet our high quality standards

Germanium window

Materials  Optical grade germanium single crystals 
 Aperture  >90% 
 Dimension tolerance  +/-0.02mm 
 Thickness tolerance  +/-0.02mm 
 Surface Quality  20/10
 Parallelism  <30 arc sec
 Chamfer  0.3-0.5mmx45degree 
 Coating  AR/AR@7-14μm DLC/AR@7-14μm BBAR/BBAR@3-12μm 
For more information, please feel free to send us an Online Inquiry or Email us.

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