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| Place of Origin | china |
| Brand Name | zmkj |
| Model Number | tube-EFG |
sapphire optical lens, Al2O3 single crystal glass ,sapphire optical glass ingots, sapphire optical rods,sapphire optical stick,Al2O3 single crystal glass lens,optical glass ingots by sapphire ,sapphire optical rods
EFG method Transparent Sapphire tubes Acid and alkali resistance high temperature 2100° resistance
+ can be customized as design size,shape,bevel chamfer,tolerance,artwork;
+ have normal size in stock as like led substrates ;
+ Widely uesd for ,optical window,lens,
watch coverglass militry etc;
+ The material is synthetic sapphire(hardness 9H) ;
+ Visible light transmittanceVisible light transmittance 85％ without coating
Sapphire is one of the hardest materials, and possesses very good transmission during the range
of visible and near IR spectrum.It is widely used as optical window in infrared and far infrared military equipments, apparatus and instruments of satellite and space technology, and navigation and spaceflight, such as night infrared scope/sight and night vision camera, etc.
The sapphire wafercrystal window is intensively applied in high-tech fields.
Sapphire optical windows are ideal for applications where high pressure, vacuum, or corrosive atmospheres are a consideration. Sapphire, a single crystal form of Al2O3, is resistant to attack by strong acids due to its high dielectric constant. It has high compressive strength and a high melting point. It is also resistant to UV radiation darkening.
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Property |
Specification |
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length |
500mm |
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Size tolerance |
﹢0.5mm |
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Edge Finish |
Ground and beveled |
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Surface Quality |
40-20 scratch-dig |
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Surface Flatness |
λ/4 @ 633 nm |
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Parallelism |
≤3 arc min (≤0.9 mrad) |
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Clear Aperture |
>80% of central diameter |
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Hardness (Knoop) |
1370 kg mm-2 |
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Young's modulus |
3.4 x 1011 N m-2 |
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Thermal Limit |
22 W m-1 K-1 |
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Thermal expansion coefficient |
8.4 x 10-6 K-1 |
Our company sapphire single crystal are made by KY method,we can supply sapphire led ingot
(2inch-8inch),sapphire wafer(1sp,2sp lapped),sapphire wafer block,all kinds of sapphire optical
cover window(applied to optical equipment,industry camera,cell phone watches and other special
optical components). So we can supply professional customized service in time and provide
cooperation and support of new product development and technology appliance,products as like
:
| Specifications | Our manufacturing capacity |
| Diameter(outer) | 0.1--350mm |
| Thickness | 0.1--200mm |
| Length | 0.1--400mm |
| Width | 0.1--400mm |
| TTV | 0-30um |
| Bow | ±30um |
| Warp | <0.01 |
| Side damage | <0.01 |
| Roughness | <0.3nm |
| S/D | 20/10--80/50 |
| Thinest Wall thickness | 0.1mm |
| Chamfering | According to the customer requirement |
| Crystal Orientation | ±0.01° |
| Vertical degree | 5′ |
| parallelism | 5′ |
| Surface line/Flatness | 1/10L-10L |
| Transmittance | 85% |
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