Sapphire Windows
Feature and Advantage:
- Shape-Free
- Extremely high hardness
- Excellent high-temperature resistance and thermal stability
- Wide wavelength band and high transmittance
- Excellent radiation resistance performance
PRODUCT
Detail
The main component of sapphire material is aluminium oxide, with a refractive index of approximately 1.7. It has a high spectral transmittance, and its light transmission range covers the ultraviolet band, visible light band, near-infrared band, and mid-infrared band. It has good thermal stability, with a melting point of up to 2323K and a boiling point of 3253K. It can maintain stable physical and chemical properties at high temperatures and can withstand drastic temperature changes without cracking. It has strong chemical stability. It is widely used in numerous fields such as optical instruments, medical equipment, semiconductors, LEDs, consumer electronics, instruments and meters, military industry, optical windows, etc.
Sizes can be customized as needed.
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Specifications
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Dimension Tolerance:
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+0.0/-0.2mm(General), +0/-0.1(High precision)
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Thickness Tolerance:
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±0.2mm（General),±0.05(High Precision)
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Surface Quality:
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80/50（General),40-20(High Precision)
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Clear Aperture:
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＞90%
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Flatness:
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λ@633nm（General),λ/4@633nm (High Precision)
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Parallelism:
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<3 arc min.(General). <30 arc sec.(High Precision)
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AR Coated:
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Uncoated, AR
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