High Quality IR Germanium Infrared Lens (Ge Lens)

Optical Ge window:Why use a Ge window?            Germanium is a high index material that is used to manufacture Attenuated Total reflection (ATR) prisms for spectroscopy. Its refractive index is

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Optical Ge window:Why use a Ge window?            

Germanium is a high index material that is used to manufacture Attenuated Total reflection (ATR) prisms for spectroscopy. Its refractive index is such that germanium makes an effective natural 50% beamsplitter without the need for coatings. 

Germanium (Ge) Optical Components are used in many Infrared (IR) applications or systems, including thermal imaging, spectroscopy, or with monochromatic light sources such as quantum cascade lasers. German (Ge) Optical Components are Optical Components designed for high performance in the Infrared (IR) spectrum without the use of Infrared (IR) anti-reflection coatings. 

 The Knoop Hardness of germanium (780) is approximately twice that of magnesium fluoride, making it ideal for infrared applications requiring rugged optics. Germanium is subject to thermal runaway, meaning that the transmission decreases as temperature increases. As such,germanium windows 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. Windows are typically availabe in a variety of sizes, contact us for availability.


SubstrateGermanium (Ge)
Diameter Tolerance (mm)0
Clear Aperture (%)90
Thickness (mm)0.5-1.5
Thickness Tolerance (mm)0.1
Surface Quality60 - 40
Surface Accuracy1/10 @ 10.6μm
Density (g/cm3)5.33
Knoop Hardness (kg/mm2)780
Coating8-12 μm
Wavelength Range (μm)2.0 - 16.0 μm
Damage Threshold0.5 J/cm2 (10.6 µm, 100 ns, 
 1 Hz, Ø0.478 mm)

Coating Curve

High Quality IR Germanium Infrared Lens (Ge Lens) in Swir

High Quality IR Germanium Infrared Lens (Ge Lens) in Swir

Quality Control Process

High Quality IR Germanium Infrared Lens (Ge Lens) in Swir

Company Information

Company summary: Qinhuangdao Intrinsic crystal technology co.,ltd
Date created: 2008 years Employees: 140workers plant Size(sq.m): 15,000
Company type: private Trademark: ICC Annual sales: 8-10$Million
D-U-N-S number:53-098-3523 Certificates: ISO9001/14001/18001 import/export status: yes
Industry: crystal material and precision optics Tax.ID: 91130301678536714D

Business Description
ICC is focused on crystal material growth, precision optics fabrication, and coating service to the world market.
growth material: NO.1 for CaF2/BaF2/MgF2/LiF, leading supplier for silicon.
Precision optics: windows, spherical lenses, prism, UV-IR optics
Coating service: 6 sets coating machines by IAD technology to make mirror, filter, beam splitter, polarizer
testing devices: ZyGo, AFM, FTIR microscope, 5sec goniomenter, reflective & transmission eccentric instrument

Business advantage
Crystal material of CaF2, BaF2, MgF2, LiF, and Silicon
Plano optics and IR/UV lenses sets size for D3.0-300mm.
We can supply free charges samples and build inventory for repeated or large orders
High Quality IR Germanium Infrared Lens (Ge Lens) in Swir


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