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Ge Window & Lens

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Product Details

In the range of 2-12 μ m, germanium is the most commonly used material for making optical lens and optical window in high-efficiency infrared imaging system. Germanium has the characteristics of high refractive index (about 4.0 at 2-12μ m band), small surface curvature and color difference.

Opticreate produces high-precision germanium window and lens, could do AR coating and DLC (Diamond like carbon) coating according to customers' requirements

MaterialGe
Diameter tolerance+0.0/-0.05mm
DiameterD2-D300mm
Focal length tolerance±2%(for lens)
Centration≤0.01mm(high precision 0.005mm)
Power
Irregularityλ/4
Surface Quality40-20
Bevel0.25 mm × 45°
CoatingAR Coating,DLC coating(Diamond like carbon)