Description
Germanium (Ge) Meniscus Lens is a high-performance convex-concave optical component with one convex surface and one concave surface, available in both positive and negative focal length designs to meet diverse optical system requirements. Crafted from high-purity germanium crystal, it is specifically optimized for mid-wave infrared (MWIR) and long-wave infrared (LWIR) applications,featuring an ultra-broad infrared transmission range and superior spherical aberration correction.It supports custom coatings and specifications, making it widely applicable in thermal imaging, remote sensing, laser systems, and scientific research fields that require high-quality infrared optical components.
Factory Custom 8-14um IR Ge Meniscus Lens DLC Coated Optical Germanium Infrared Lens for Aerospace Optics
Specifications
| Material: | Ge |
|---|---|
| Diameter: | 25 mm |
| ROC1: | 33.38 mm |
| ROC2: | -50.04 mm |
| Dimension Tolerance: | +0/-0.1mm |
| Surface Quality: | 60-40,40-20,or better |
| Flatness: | 4/λ |
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Features
- High-Purity Germanium Substrate: Made of high-purity germanium crystal with excellent optical homogeneity, low internal stress, and minimal impurities, ensuring low light scattering, high refractive index (n≈4.0 at 10.6μm), and stable performance in harsh environments
- Superior Spherical Aberration Correction: The unique convex-concave meniscus design effectively minimizes spherical aberration and reduces spot sizes, providing better optical performance than comparable plano-convex lenses, making it ideal for high-precision infrared imaging and beam shaping systems
- Excellent Chemical Stability: Inert to air, water, acids, and alkalis, with high Knoop hardness, ensuring strong wear resistance and corrosion resistance, suitable for long-term use in harsh industrial and outdoor environments
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Controlled Thermal Performance: Operates stably at temperatures below 100℃ (to avoid thermal runaway, which reduces transmission as temperature increases), with a suitable thermal conductivity for infrared system integration, adapting to most industrial and scientific research temperature environments
Applications
- Thermal Imaging Systems: Widely used in thermal cameras, night vision devices, and infrared surveillance equipment for MWIR and LWIR imaging, suitable for industrial temperature monitoring, security surveillance, and outdoor low-light detection applications
- Remote Sensing & Aerospace: Integrated into satellite-borne infrared sensors, airborne remote sensing equipment, and aerospace optical systems, used for atmospheric monitoring, environmental detection, and aerospace surveillance due to its stable performance and broad infrared transmission range
- Spectroscopy & Scientific Research: Used in infrared spectrophotometers, monochromators, and spectrometers for 2.0-16.0μm infrared spectroscopy, applicable in material science, atmospheric research, and high-energy physics experiments
- Industrial & Defense: Utilized in industrial infrared detection equipment, missile guidance systems, and military surveillance devices, leveraging its chemical stability, wear resistance, and superior infrared optical performance in harsh environments
- Optical Communication: Employed in mid-infrared optical communication systems and fiber coupling devices to adjust beam divergence angles and improve coupling efficiency, especially in 3-5μm and 8-12μm communication bands
- Medical & Biomedical Optics: Used in infrared diagnostic equipment and medical spectroscopy systems for non-invasive detection and analysis, where its broad infrared transmission and stable performance are essential
Frequently Asked Questions
What is the difference between positive and negative Ge meniscus lenses?
Is germanium a toxic material? How to handle it properly?
What is the clear aperture of the lens?
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