Infrared window, germanium window
Germanium is the preferred lens and window material for high-performance infrared imaging in the 8–12μm band. Its high refractive index makes Ge ideal for low-power imaging systems, with little chromatic aberration and usually no correction required.
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Overview
Specifications
| Parameter | Value |
|---|---|
| Material [Shared by standard and high precision; Original cell colspan2] | N Type <111> |
| Electrical Resistivity [Shared by standard and high precision; Original cell colspan2] | 5~40 ohmcm |
| Diameter Tolerance [Shared by standard and high precision; Original cell colspan2] | +0/-0.10 |
| Thickness Tolerance [Shared by standard and high precision; Original cell colspan2] | ±0.10 mm |
| Clear Aperture Dimension [Shared by standard and high precision; Original cell colspan2] | >Central 90% of diameter |
| Edge Bevel [Shared by standard and high precision; Original cell colspan2] | 0.15~0.35mm×45° |
| Coating [Shared by standard and high precision; Original cell colspan2] | Uncoated, DLC, AR |
| Surface Finish [Standard precision] | 60-40 S/D |
| Parallelism [Standard precision] | 3~5 arc min |
| Surface Figure [Standard precision; per25mm] | 1λ |
| Surface Finish [High Precision] | 40-20 S/D |
| Parallelism [High Precision] | 1 arc min |
| Surface Figure [High Precision; per25mm] | λ/4 |
| Preferred infrared imaging band [Ge lens/window material; Summary] | 8~12 micrometers |
| Customizable thickness [Available on request] | 1.0~80.0 mm |
| Available Coatings [Customization information in precaution 4; Retained separately from the DLC spelling in the general cell] | AR、HR、DHL |
Datasheet
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