Germanium Lenses
Featured Product from Avantier Inc.
Avantier Germanium lenses offer a combination of high refractive index, low dispersion, and exceptional ruggedness, making them well suited for demanding infrared applications. With a high refractive index among readily available IR-transmitting materials, Germanium provides minimal chromatic aberration due to its low dispersion. These properties make Germanium lenses a preferred choice for infrared applications such as FLIR and FTIR, as well as thermal imaging systems and precision analytical instruments operating in harsh conditions.
The unique ruggedness of Germanium, characterized by a Knoop hardness of 780 and a high density of 5.33 g/cm³, allows these lenses to withstand demanding environments and applications. Available in a wide variety of shapes and sizes, our Germanium lenses can be tailored to meet specific optical requirements. Options include spherical, plano-concave, plano-convex, concave-convex, and aspheric lenses.
Light Sources and Optical Components
Germanium infrared lenses are compatible with various light sources, including lasers and LEDs, ensuring reliable performance across different optical systems. They serve as essential optical components in high-precision systems, enhancing overall efficiency and effectiveness.
Optical System Integration
These lenses are ideal for integration into advanced optical systems requiring high performance. Their versatility allows for seamless incorporation into systems designed for imaging, sensing, and analysis.
Thermal Imaging
Our Germanium lenses are well suited for thermal imaging applications, providing high performance and reliability across diverse environments. Anti-reflection coatings further enhance their optical efficiency, making them suitable for both infrared and thermal imaging applications.
Specifications
Our lenses are designed for exceptional performance in the infrared region, making them perfect for IR applications. Specifications, ranging from diameters of 5 mm to 350 mm, ensure that our lenses maintain precision with focal length tolerances of +/-1%, while surface flatness is maintained at λ/4 @ 633nm. This precision, combined with a 20-10 scratch dig surface quality post-coating, positions our Germanium lenses as a reliable choice for a wide range of laser applications.
Factory Standard
| Substrate Material | Ge (Germanium) |
| Diameter | 5mm-350mm |
| Shape | Spherical Plano-Concave, P-Convex, Concave-Convex or Aspheric |
| Focal length | +/-1% |
| Surface Quality | 20-10 (after coating) |
| Surface Figure | l/4 @ 633nm |
| Antireflection Coating | @ 3-12 um |
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Stock – Germanium Aspheric Lenses
