new material
Germanium plano-convex lens is a high-performance optical component designed for superior infrared transmission, precise light focusing, and excellent durability. Manufactured from high-purity germanium, it offers outstanding optical clarity, minimal distortion, and strong resistance to environmental fluctuations. This precision lens is widely used in infrared imaging, laser optics, aerospace applications, and scientific research, ensuring optimal optical performance for advanced optical systems.
Product Overview
The germanium plano-convex lens is an optical component made from germanium single-crystal material, designed with one flat surface and one convex surface. It is widely used for focusing light and converging it to a single point, making it especially suitable for infrared optical systems. Germanium lenses offer high transparency and can transmit light in the wavelength range of 2–16 μm, making them ideal for use in LiDAR systems, optical sensors, spectrometers, and other equipment for beam shaping and optical path adjustments. Germanium’s high refractive index, hardness, and excellent thermal conductivity allow it to perform well in harsh environments.
Key Features
- Wide Spectral Transmission: Capable of transmitting light in the 2–16 μm wavelength range, making it ideal for infrared applications.
- High Refractive Index: The high refractive index enables effective light focusing and adjustment.
- High Hardness and Durability: Germanium has a high Vickers hardness, making it suitable for high-load environments.
- Excellent Thermal Conductivity: With great heat dissipation, germanium is suitable for use in high-temperature environments.
- Chemical Stability: Germanium is inert to air, water, acids, and bases, making it ideal for use in harsh environments.
Applications
- Infrared Optical Systems: Used as lenses and window materials in infrared imaging, detection, and other systems.
- Laser Systems: Used in LiDAR systems and CO2 lasers for beam collimation and focusing.
- Optical Sensors and Spectrometers: Serves as an optical element for beam shaping, collimation, and expansion.
- Thermal Imaging Systems: Used in thermal imaging systems for high-performance infrared imaging and detection.
- Harsh Environment Applications: Suitable for optical applications in high-temperature, high-pressure, and harsh environments.
| Optical Property | Value |
| Transmission Range | 2-15 μm |
| Reflection Loss | 4.0028 @ 10.6 μm |
| Absorption Coefficient | 1.3 × 10⁻³ @ 3.8 μm |
| 3 × 10⁻² @ 10.6 μm | |
| Structure | Cubic Crystal System |
| Cleavage Planes | <111 |
| Physical Property | Value |
| Density | 5.33 g/cm³ |
| Melting Point | 936 ℃ |
| Thermal Conductivity | 58.61 W/(m·K) @ 293K |
| Thermal Expansion | 6.1 × 10⁻⁶/K @ 298K |
| Knoop Hardness | 780 kg/mm² |
| Specific Heat Capacity | 310 J/(kg·K) |
| Dielectric Constant | 16.6 @ 9.37 GHz |
| Young's Modulus | 102.7 GPa |
| Shear Modulus | 67 GPa |
| Bulk Modulus | 77.2 GPa |
| Poisson's Coefficient | 0.28 |
| Chemical Property | Value |
| Solubility | Insoluble |
| Molecular Weight | 72.61 g/mol |
| Property | Value |
| Diameter Range | 2-300mm |
| Focal Length | 15-5000mm |
| Thickness | 0.12-60mm |
| Surface Quality | 80-50, 60-40, 40-20, 20-10, 10-5 |
| Surface Flatness | λ/2, λ/4, λ/8, λ/10 |
| Clear Aperture | >90% |
| Coating | Customizable |
