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China Star Optics Technology Co.,Ltd.
Optical Ge Windows,Infrared Germanium Lens,Uncoated Ge Window
| Min.Order | Unit Price |
|---|---|
| 1000 Piece/Pieces | USD 40 / Piece/Pieces |
| 500 Piece/Pieces | USD 50 / Piece/Pieces |
| 10 Piece/Pieces | USD 70 / Piece/Pieces |
Besides Ge Optical Round Window, other Infrared Window such as Zinc Selenide Windows, Caf2 Window, sapphire window and other Irregular Window are available upon request.
GE material feature high index of refraction (around 4.0 from 2 - 14μm), an anti-reflection coating is recommended on these germanium windows or Germanium Lens for sufficient transmission in the region of interest. Germanium is subject to thermal runaway, meaning that the transmission decreases as temperature increases. As such, these germanium windows or Germanium lens should be used at temperatures below 100°C. Germanium’s high density (5.33 g/cm3) should be considered when designing for weight-sensitive systems. The Knoop Hardness of germanium (780) is approximately twice that of magnesium fluoride, making it ideal for infrared applications requiring rugged optics. Germanium Infrared Lens, Germanium Aspheric Lens and other Germanium elements are available.
Specification of the Ge infrared window or Germanium lens:
| Standard precision of Germanium lens and Germanium infrared window | High-precision of Germanium lens and Germanium infrared window | | |
| Dimension Tolerance | φ5-250 mm+0/-0.2 | φ3-350 mm+0/-0.2 | |
| Thickness Tolerance | 1-50 mm+/-0.1 | 1-50 mm | |
| Parallelism | 1 arc minute | 10 arc seconds | |
| Surface Quality | 60/40 | 20/10 | |
| Flatness | N<λ/2@633 nm（at 50 mm） | N<λ/10@633 nm（at 50 mm） | |
| Clear Aperture | >90% | >95% | |
| Chamfer | Protected <0.5 mm x 45 deg | Protected <0.5 mm x 45 deg | |
Product Categories : Infrared Crystal Optical Lens > Germanium Lens
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