Sapphire Glass Window
A sapphire glass window is an ultra-high-performance optical window made from synthetic sapphire (single-crystal aluminum oxide, Al₂O₃). It offers exceptional durability, clarity, and resistance to extreme environments, making it ideal for demanding applications.
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Model Number
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Sapphire glass
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Size tolerance
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+0.0/-0.25
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Edge Finish
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Ground and beveled
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Surface Quality
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40-20 scratch-dig
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Parallelism
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≤3 arc min (≤0.9 mrad)
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Clear Aperture
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>80% of central diameter
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Hardness (Knoop)
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1370 kg mm*-2
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Thermal Limit
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22 W m*-1 K*-1
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Common Applications
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Aerospace & Defense: Missile domes, IR windows, laser systems.
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Semiconductor: Wafer inspection, vacuum chamber viewports.
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Medical: Surgical instruments, endoscope lenses.
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High-End Electronics: Smartwatch screens (e.g., Apple Watch), smartphone camera covers.
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Industrial: High-pressure reactor sight glasses, abrasive slurry monitoring.
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