Product Description
Optical windows are falt, plane parallel plates which are often used as protective barriers for electronic sensors or detectors from outside environments. When selecting windows, please consider materials, transmission, scattering, parallelism and resisitance to certain environment or mechanical properties of the substrate.
Silicon (Si) Windows
Silicon (Si) Windows manufactured from optical grade silicon are popular for the 1.2 - 7μm spectral region due to their low cost and low density. Due to its low density (half that of germanium or zinc selenide), silicon is ideal for weight sensitive applications, especially those in the 3 - 5μm region. Density is 2.329 g/cm3 and Knoop Hardness is 1150, making it harder and less brittle than germanium.
| Diameter |
0.2-300mm |
| Thickness |
0.1-100mm |
| Dimension tolerance |
+/-0.1mm or +/-0.02mm |
| Surface quality (scratch & dig) |
60/40, 40/20 or better |
| Clear aperture |
>85%, >90% |
| Surface accuracy |
L/10 L/2 L |
| Parallelism |
+/-3' ,+/-30'' |
| Bevel |
0.1~0.3mm x 45 degree |
| Coating |
AR, BBAR or Custom |
Shenyang Ebetter Optics Co., Ltd. offers standard and high precision optical windows in round,square, wedge shapes. We also support custom made optical windows in a variety of substrates, such as UV Fused silica, N-BK7, Germanium(Ge), Silicon(Si),Zinc Selenide(ZnSe). The high precision parallelism of 10 arc seconds, surface quality of 10/5 and flatness of λ/20.Single layer or multi-layer anti-reflection coatings are available.
Silicon Windows/Si Windows
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