Germanium Optics (Ge Optics) for Infrared Imaging & Sensing
Precision-engineered infrared optical components for defense, industrial, aerospace, and scientific applications.
Avantier Inc. specializes in high-performance germanium optics (Ge optics)—including lenses, windows, and domes—designed to meet the rigorous demands of infrared light imaging systems. With superior infrared region transmission properties, high refractive index, and rugged durability, germanium is a cornerstone raw material for MWIR and LWIR applications, including thermal imaging, remote sensing, spectroscopy, and defense.
Why Germanium for Infrared Optics?
Germanium (Ge) is a crystalline semiconductor known for its exceptional transmission in the 2–14 µm wavelength range. It offers a combination of optical clarity, durability, and coating compatibility that makes it ideal for infrared system integration.
Key benefits of germanium:
- Excellent IR transmission (MWIR & LWIR)
- High refractive index (~4.0 at 10 µm)
- Minimal chromatic aberration due to low dispersion, ensuring sharp imaging performance
- Compatible with AR coatings, DLC coatings, and broadband coatings
- Stable performance across temperature extremes
- Mechanical hardness for harsh environments
Our Germanium Optics Product Line
Avantier offers a wide range of germanium optical components, available in standard or fully customized configurations.
High-precision lenses for thermal imaging, FLIR, and FTIR spectroscopy. Available with anti-reflective coatings and custom focal lengths. Excellent for wide-angle IR imaging systems.
Infrared aspheric lenses minimize aberrations and maximize image quality across the IR spectrum. Ideal for surveillance, remote sensing, and scientific instrumentation.
Optimized for the medium-wave infrared (3–5 µm), our MWIR lenses are available in 25–250 mm focal lengths and support detectors like 640×512-15 µm. Engineered for precise alignment and minimal thermal shift.
Designed for long-wave infrared (8–12 µm), our LWIR lenses deliver high-performance imaging for predictive maintenance, medical diagnostics, and defense surveillance.
Engineered for use in aerospace, UAV, and marine environments, our domes provide IR transparency and mechanical protection for sensitive optical systems.
Durable and thermally stable, germanium windows provide excellent IR transmission while withstanding tough environmental conditions. Ideal for sensor protection and IR system sealing.
Coatings & Customization
Every optical component can be tailored to meet your exact design specifications:
- Coating options: Diamond-like carbon (DLC), AR, BBAR
- Surface quality: Up to 20-10 scratch-dig
- Custom shapes: Plano-convex, bi-convex, aspheric, dome and others upon request
- Dimensional tolerances: Precision-ground and polished to spec
Our engineering team provides full support throughout the design, prototyping, and production phases.
Applications of Germanium Optics
Our optics are used in a broad range of industries, including:
- Thermal imaging systems (military, industrial, medical)
- FLIR and IR surveillance cameras
- Gas detection and spectroscopy
- Aerospace and drone imaging
- Environmental monitoring
- Remote sensing
Request a Quote or Speak with Our Engineers
Whether you’re building a custom IR imaging system or sourcing germanium optics for production, Avantier Inc. is your trusted partner for precision and performance.
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