>Products Line
Sapphire Windows


 

 

Products Line
Sapphire&Ruby
Sapphire Windows
Sapphire Ring Jewel
Sapphire Rod
Jewels Bearing
Sapphire Pivot
Sapphire&Ruby Ball
Sapphire Tubes
Sapphire Assemblies
Sapphire Block
Custom Made
 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

   

sapphire window

Sapphire is a single crystal aluminum oxide (Al2O3). It is one of the hardest materials. Sapphire has good transmission characteristics over the visible, and near IR spectrum. It exhibits high mechanical strength, chemical resistance, thermal conductivity and thermal stability. It is often used as window materials in specific field such as space technology where scratch or high temperature resistance is required.

Sapphire Physical Properties

Crystal Symmetry Hexagonal System  
Lattice constant A a =4.75 ; 
c =12.97
Transparence range μm 0.18- 4.5
Density g/cm3 3.98
Mohs hardness 9
Melting point

oC

2030
Thermal conductivity W/m/K 0.04
Expansion coefficien 10-6/K 8.4
Refractive Index 1.0 μm 1.755

Sapphire Window

Sapphire window is made from synthetic sapphire and can be made much thinner than BK7 windows.. It is highly durable with a wide transmission range. Sapphire window is best suited for scratch resistance application that requires better transmission over a wide range spectrum.

 

High Precision Sapphire Windows

Material: Sapphire
Clear Aperture: 85%
Flatness: <l/4
Parallelism: <1 arc minute
Surface Quality: 40/20
Bevel: 0.25mm x 45°
Coating: Available upon request

 

Standard Sapphire Windows

Material: Sapphire
Clear Aperture: 85%
Flatness: 1 l per 25mm @633nm
Parallelism: <3~5 arc minutes
Surface Quality: 60/40
Bevel: 0.25mm x 45°
Coating: Available upon request

 

Standard Product Information

High Precision

Standard Precision

f ± 0.1 (mm)

T±0.2 (mm)
f ± 0.1 (mm)
T ± 0.2 (mm)
10.0
6.0
10.0
3.0
25.0
6.0
15.0
3.0
50.0

10.0

25.0
3.0
   
50.0

3.0

 

 

 


Home | About us | Sales Organization | Products | Manufacturing | Specialities | Contact
 
E-Mail: sales@chonghong.com
 
© Copyrigt Chonghong Industries Ltd, 2004