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Germanium (Ge) Windows
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TECHSPEC®鍺(Ge) 窗鏡現貨供應，可選三種抗反射鍍膜: 3 - 5μm波段適用於中紅外應用，3 - 12μm波段適用於寬帶多光譜應用, 8 - 12μm波段適用於熱成像應用。由於鍺窗口片的折射率很高 (對於2 - 14μm的光大約為4.0)，因此建議在這些鍺窗口片上使用抗反射鍍膜，以便在所需範圍內實現充足的穿透。鍺受温度影響嚴重，穿透率隨温度的升高而降低，因此，只能適用於100°C以下溫度的應用。在設計對重量有嚴格要求的系统時要考慮鍺的高密度(5.33 g/cm3)。鍺的努氏硬度是780，大約是氟化鎂硬度的兩倍，非常適用於需要堅固光學特性的紅外應用。
| AR COATED GERMANIUM | |
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Typical transmission of a 3mm thick Ge window with BBAR (3000-5000nm) coating at 0° AOI. The blue shaded region indicates the coating design wavelengh range, with the following specification: Ravg <3% @ 3000 - 5000nm Data outside this range is not guaranteed and is for reference only. |
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Typical transmission of a 3mm thick Ge window with BBAR (3000-12000nm) coating at 0° AOI. The blue shaded region indicates the coating design wavelengh range, with the following specification: Ravg <5.0% @ 3 - 12μm Data outside this range is not guaranteed and is for reference only. |
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Typical transmission of a 3mm thick Ge window with BBAR (8000-12000nm) coating at 0° AOI. The blue shaded region indicates the coating design wavelengh range, with the following specification: Ravg <3.0% @ 8 - 12μm Data outside this range is not guaranteed and is for reference only. |
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