Optical Germanium window with AR coating
Germanium(Ge) Windows for thermal imaging
Germanium windows are ideal for IR applications with its broad transmission range and opacity in the visible portion of the spectrum. Germanium has a high index of refraction, making it a perfect choice for applications that require low dispersion. Germanium is commonly used in IR imaging systems typically operating in the 2 µm to 12 µm spectral range, covers the LWIR (8-12μm) and MWIR (3-5μm) thermal imaging wavelength range. Germanium can be AR coated with Diamond producing an extremely tough front optic. Germanium is more rugged than other IR materials, but caution should be taken for high temperature applications where the material will become opaque in the IR realm as the temperature rises.
Features and Abilities
Diameter range: ~ 300mm; Various types of coating:
AR/AR@7-14um;
DLC (diamond or hard carbon coating)/AR@7-14um; BBAR/BBAR@3-12um;
Customized coating;
| Materials |
Optical grade germanium single crystals |
| Aperture |
>90% |
| Dimension tolerance |
+0.0/-0.2mm |
| Thickness tolerance |
+/-0.2mm |
| Surface Quality |
60/40 or 40/20 |
| Parallelism |
1 arc minute |
| Chamfer |
0.3-0.5mmx45degree |
| Coating |
AR/AR@7-14μm DLC/AR@7-14μm BBAR/BBAR@3-12μm See the curves below |
Q1. Are you a factory?
A1. Yes, we are a professional manufacturer of optical components, we have more than 20 years experience in optical cold working.
Q2. What is the MOQ of your products?
A2. No MOQ for customer if our product is in stock,
Q3: Can I custom the products based on my requirement?
A3.Yes, we can custom the material, specifications and optical coating for your optical components as your requirement.
Q4. How can I get sample from you?
A4. Just send us your requirements, then we will send samples accordingly.
Q5. How many days will samples be finished? How about mass products?
A5. Generally, we need 1~2 days to finish the sample production. As for the mass products, it depends on your order quantity.
Q6. What's the delivery time?
A6. (1) For inventory: the delivery time is 1-3 working days.
(2) For customized products: the delivery time is 7 to 25 working days. According to the quantity.
Q7. How do you control the quality?
A7. More than four times quality inspect during production process, we can provide the Quality test report.
Q8. How about your optical lens production ability per Month?
A8. About 20,000pcs/Month. According to the detail requirement
