Si Window
Silicon( Si) is a good IR material , it can be used from 1.2 to 7 microns, its peak transmission range is in 3-5 micron. Silicon can be used in some circumstances where weight is a concern as that the density of Silicon is similar to optical glass. Silicon material is widely used in security and military applications.
Transmission Range: 1200 nm~7000 nm
Hermal Expansion Coefficient: 2.55x10-6/K
Density: 2.33g/cm3
Transmission Range: 1200 nm~7000 nm
Hermal Expansion Coefficient: 2.55x10-6/K
Density: 2.33g/cm3
Specifications
|
Material |
Silicon |
|
Dimension Tolerance |
+0.0/-0.1mm |
|
Thickness Tolerance |
±0.2mm |
|
Clear Aperture |
>90% |
|
Parallelism |
<1arc minutes |
|
Surface Quality |
60/40 or better |
|
Flatness |
<λ /2@633nm or better |
|
Chamfer |
Protected <0.5mmx45deg |
|
Coating |
None, per your request |
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