Silicon Optical Windows
Silicon Optical Windows
Silicon windows are ideal for IR applications, offering good transmittance from 1.2 to 7.0 µm. Silicon has a low 2.329 g/cm3 density, which is half the density of germanium and zinc selenide, making it a superb choice for weight-sensitive applications.
- Designed for 1.2 to 7 µm NIR and MWIR applications
- Ideal for weight-sensitive applications
- More robust and less brittle than germanium or zinc selenide windows See All Features
| Compare | Description | Drawings, CAD & Specs | Avail. | Price | ||
|---|---|---|---|---|---|---|
 | 10SI20Silicon Window, 25.4 mm Diameter, 2.0 mm Thick, Uncoated |
Specifications
- Diameter25.4 mm
- MaterialOptical Grade Silicon
- Antireflection CoatingUncoated
- Surface Flatnessλ/20 @ 10.6 µm
- Surface Quality40-20 scratch-dig
- Thickness2.0 mm
- Thickness Tolerance±0.25 mm
- Parallelism< 3 arc minute
- Cleaning
- Clear ApertureCentral 85% of diameter
- Diameter Tolerance±0.20 mm
Features
Ideal for Weight-Sensitive Applications
With a low 2.329 g/cm3 density, silicon windows are an ideal choice for weight-sensitive applications. Additionally, silicon is less brittle and more thermally stable than germanium and zinc selenide.
No Birefringence
Birefringence can degrade IR imaging performance, so selecting a material that is not birefringent is important. Since silicon features a cubic crystalline structure, it will not exhibit birefringence.
