Gemstone Window
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.
Overview
Specifications
| Parameter | Value |
|---|---|
| Dimension Tolerance [+0.0/-0.2mm(General), +0/-0.1(High precision)] | +0.0/-0.2mm(General), +0/-0.1(High precision) |
| Thickness Tolerance [±0.2mm(General),±0.05(High Precision)] | ±0.2mm(General),±0.05(High Precision) |
| Surface Quality [80/50(General),40-20(High Precision)] | 80/50(General),40-20(High Precision) |
| Clear Aperture | >90% |
| Flatness [633nm;λ@633nm(General),λ/4@633nm (High Precision)] | λ@633nm(General),λ/4@633nm (High Precision) |
| Parallelism [<3 arc min.(General). <30 arc sec.(High Precision)] | <3 arc min.(General). <30 arc sec.(High Precision) |
| AR Coated [Uncoated, AR] | Uncoated, AR |
Key Features
Datasheet
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