Germanium (Ge) Window
Germanium (Ge) is the preferred lens and window material for high performance infrared imaging systems in the 8–12 um wavelength band.
Description
Germanium (Ge) is the preferred lens and window material for high performance infrared imaging systems in the 8–12 um wavelength band.
Specifications:
| Specification | Value |
|---|---|
| Material | GE N Type <111>, Resistivity 5-40 ohm·cm |
| Diameter Tolerance | +0 / -0.10 mm |
| Thickness Tolerance | ±0.10 mm |
| Clear Aperture | >Central 90% of diameter |
| Surface Quality | 60-40 / 40-20 |
| Parallelism | 1~5 arc min |
| Surface Flatness | 1 λ or better |
| Chamfer | 0.15~0.35 mm × 45° |
| Coating | Uncoated, DLC, AR |
Note for Ge Window:
Please specify the material and resistivity
Custom-made Ge windows at any size are available.
Besides round, shape of quadrate, Stepped shape or other polygonal are available.
Thickness from 1.0mm to 80.0 mm is available upon request.
Better bevel is available upon request.
Ge Windows with Anti-Reflective(AR), High-Reflective(HR), DLC coating are available.
FAQs
1. What is your MOQ for germanium (Ge) window?
Our standard MOQ is 50 pieces for regular production.
For small orders (≤50 pcs), we can still accept production and provide full inspection reports and measurement data for each piece upon request.
2. Do you support small batch or prototype orders?
Yes. We support small batch and prototype production for testing and evaluation before mass production.
3. What is your production lead time?
- Standard polished fused silica windows: 4–5 weeks
- Coated optical windows (AR / HR): 5–6 weeks, depending on coating type and specifications
4. Do you provide inspection reports?
Yes. We provide quality inspection reports based on order quantity:
- ≤50 pcs: Full inspection data for each piece available
- 100–1,000 pcs: 5%–10% random sampling inspection reports
- >1,000 pcs: 0.5% sampling inspection reports
All inspection data includes dimensional and surface quality parameters.
5. What coating options are available?
We offer:
- Anti-Reflection (AR) coatings
- High-Reflection (HR) coatings
- Broadband coatings
- Custom wavelength coatings (UV / Visible / IR)
6. Can you manufacture custom sizes and shapes?
Yes. We support OEM manufacturing according to drawings.
Available shapes include:
- Round
- Square
- Rectangular
- Stepped
- Wedged
- Drilled / special structures
7. What quality certifications do you have?
We are certified under international quality management systems, including:
- ISO 9001 Quality Management System
- IATF 16949 Automotive Quality System
- Good Standardization Practices Certification
We also apply strict internal quality control processes, including dimensional inspection, surface quality testing, and coating performance verification before shipment.
