new material
Germanium plano-concave lens is a high-performance optical component designed for superior infrared transmission, precise beam divergence control, and minimal optical distortion. Manufactured from high-purity germanium, it offers exceptional optical clarity, excellent durability, and stable spectral performance in demanding environments. This precision lens is widely used in infrared imaging systems, laser optics, aerospace applications, and scientific instrumentation, ensuring optimal functionality for advanced optical systems.
Product Overview
The germanium plano-concave lens is an optical element with a plano-concave surface, typically made from germanium single crystal material. This lens offers excellent optical and mechanical performance. Its main function is to alter the size and shape of the image, such as converting a point light source into a line or adjusting the image height without changing the image width. With a negative focal length, the germanium plano-concave lens diverges parallel incoming light, making it ideal for beam expansion and projection applications. It is particularly suited for infrared optical systems, such as infrared imaging and infrared spectrometers.
Key Features
- High Transparency: The germanium plano-concave lens provides excellent transparency, especially in the infrared spectrum (2-12μm), with outstanding transmission.
- Low Reflectivity: Through precision manufacturing and coating treatments, the lens minimizes reflective losses and enhances the efficiency of optical systems.
- High Mechanical Strength: Germanium has high hardness and mechanical strength, making it suitable for high-performance optical systems.
- Good Thermal Conductivity: Germanium has excellent thermal conductivity, which aids in heat dissipation and ensures stability in high-power applications.
- Chemical Stability: The germanium plano-concave lens is water-insoluble and offers good chemical stability, making it suitable for various operational environments.
- High Laser Damage Threshold: In laser applications, germanium lenses exhibit a high laser damage threshold, making them suitable for high-power laser systems.
Applications
- Infrared Imaging Systems: Due to its excellent infrared transparency, the germanium plano-concave lens is widely used in infrared imaging systems.
- Infrared Spectrometers: In infrared spectroscopic analysis, the germanium plano-concave lens is used to change beam direction and extend focal length, improving the precision of optical systems.
- Laser Systems: In laser systems, the germanium plano-concave lens is commonly used for beam expansion and collimation.
- Optical Imaging: In imaging systems, it is used to adjust image size and focal length.
- Projection Systems: Used in optical projection systems to adjust the divergence angle of beams.
| 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 |
