sapphire optical lens, Al2O3 single crystal glass ,sapphire optical
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,sapphire optical rods
About Sapphire Feature
+ 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.
Property | Specification |
Thickness | 0.5-50mm |
Size tolerance | 0 |
Edge Finish | Ground and beveled |
Surface Quality | 40-20 scratch-dig |
Surface Flatness | λ/4 @ 633 nm |
Parallelism | ≤3 arc min (≤0.9 mrad) |
Clear Aperture | >80% of central diameter |
Hardness (Knoop) | 1370 kg mm-2 |
Young's modulus | 3.4 x 1011 N m-2 |
Thermal Limit | 22 W m-1 K-1 |
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
:
commen specifications we can provide in sapphire optical lens
filed.
| 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% |
Packing ＆Delivery
