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[China]
Trade Verify
Address: Rm5-616,No.851,Dianshanhu avenue, Qingpu area，Shanghai city，CHINA
Contact name:Wang
SHANGHAI FAMOUS TRADE CO.,LTD |
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Verified Suppliers
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DSP double side polished customized shape with hole 4inch dia100mm
0.5mm Al2O3 sapphire optical glass wafer for window
1. About Sapphire
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 crystal
window is intensively applied in high-tech fields.
Feature
+ can be customized as design size,shape,bevel
chamfer,tolerance,artwork;
+ have normal size in stock;
+ Widely uesd for watch glass,optical window,lens,militry etc;
+ The material is synthetic sapphire(hardness 9H) ;
+ Flatness: <20μm;
+ vision light transmissivity:85％
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 | 0.005mm |
| 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 produced by KY
method,we can supply sapphire
ingot(2inch,4inch,6inch,8inch),sapphire wafer(single/double side
polishing),sapphire block,all kinds of sapphire optical
window(applied to optical equipment,industry camera,cell phone
watches and other special optical components),if you have any
requirements,please contact us.
2. Pictures Size For Sapphire windows
Materials: 99.999％ sapphire optical grade ,no bubble ,color
and crystal boundar.
size :
dia100xdia20x0.5mmt, -----> (dia0.5~dia300mm we can provide)
Orientation:
C(0001)±1°, ----->
(C,R,A,M-axis ok)
Tolerance
:±0.025mm ------>
(±0.005 ok)
surface: double side poshlied
------> (1sp,2sp.lapped.as-cut ok)
Ra:
＜ 0.3nm
SD:
40/20
,----------> (20/10,60/40,80/50 ok)
3. Our products 
sapphire lens by customized shape also can be
provided,please refer to our homepage products.
FAQ:
Q: What's the way of shipping and cost?
A:(1) it is fine If you have your own express account ,If not,we
could help you
ship them and Freight is in accordance with the actual settlement.
Q: How to pay? What's your MOQ?
A: 50％ deposit ,T/T, Paypal.
(1) For inventory, the MOQ is 5pcs. if 25pcs it's better.
(2) For customized products, the MOQ is 10-30pcs up.
Packing ＆ Delivery
Packaging products → single cassette or 25 pcs boxes in cleaning
room for wafers
Inner packing → Foam plastics anti-vibration cushion liner for
package
Outer packing → five layers corrugated carton paper box or as
required
Shipping by air → UPS , DHL , Fedex , TNT, EMS ,SF ,etc
