Borosilicate Window Description
Borosilicate Window is ideal for high temperature and harsh environment applications. Borosilicate glass products can maintain flatness under different environmental conditions due to their excellent shock resistance and heat resistance. Borosilicate windows are manufactured using a floating technology that produces superior surface accuracy of 4-6λ per inch. The windows are three times more resistant to thermal shock than standard calcium carbonate glass.
Borosilicate Window Specifications
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Abbe Number (vd)
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65.41
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Clear Aperture (%)
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≥90
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Density (g/cm3)
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2.23
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Knoop Hardness (kg/mm2)
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480
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Resistance to Temperature Difference (K)
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Short Term, 1 hr: 110K
1 - 100 hrs: 90K
Long Term, >100 hrs: 80K
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Surface Flatness (P-V)
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4 - 6λ
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Thermal Shock (K)
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Up to 4mm Thick: 175K
4 - 6mm Thick: 160K
6 - 15mm Thick: 150K
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Young's Modulus (GPa)
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64
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Coefficient of Thermal Expansion CTE (10-6/℃)
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3.25 (+20 to +300℃)
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Index of Refraction nd
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1.472
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Poisson's Ratio
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0.2
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Surface Quality
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80-50
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Transformation Temperature (℃)
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525
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Borosilicate Window Application
Borosilicate Window is used as exit windows for high-power CO2 lasers. It has higher thermal conductivity and lower absorption capabilities than other infrared materials, thus minimizing the impact on beam quality. Other common applications include diamond-based nuclear detectors, general microwave engineering, and use as microwave windows in multispectral optical systems.
Borosilicate Window Packaging
Our Borosilicate Window is carefully handled during storage and transportation to preserve the quality of our product in its original condition.
