new material
Silicon rectangular window is a high-performance optical component known for its exceptional infrared transmission, mechanical durability, and thermal stability. Engineered from crystalline silicon, it provides superior optical clarity, low refractive index, and resistance to environmental degradation, making it ideal for infrared imaging, aerospace applications, laser systems, and scientific instrumentation. Its robustness ensures long-term reliability in precision optical technologies and industrial applications.
Product Overview
The silicon rectangular window is an optical component made from high-purity silicon material, widely used in electronic sensors and external environmental detectors, typically as a protective window. The rectangular shape design effectively separates the internal components of instruments from the external environment, protecting internal devices from external influences. Silicon material offers excellent optical performance, providing high transmission in both visible and infrared bands while maintaining low reflection and absorption rates. With its high hardness, low expansion coefficient, and good thermal stability, the silicon rectangular window delivers outstanding performance in various optical systems.
Key Features
- High Transmission: Exhibits excellent transmission in both visible and infrared bands, ensuring efficient light transmission.
- Low Reflection & Low Absorption: Effectively reduces reflection loss, enhancing the transmission efficiency of optical systems.
- High Hardness: Silicon material has high hardness, making it suitable for demanding optical environments.
- Thermal Stability: Offers excellent thermal stability, maintaining stable performance even in high-temperature environments.
- Low Expansion Coefficient: The low expansion coefficient ensures that the silicon window can operate stably in environments with large temperature fluctuations.
Applications
- Defense & Weaponry: Used in optical protective windows for military equipment, ensuring that internal devices are shielded from external environmental interference.
- Thermal Imaging & Infrared Thermometers: Widely used in infrared imaging and temperature measurement fields.
- Night Vision & Satellites: Serves as an important optical component in infrared night vision systems and satellite optical systems.
- Infrared Lasers & Optical Systems: Extensively applied in infrared laser systems and infrared optical transmission devices.
- Scientific Equipment: Used as protective windows or light-transmitting windows in high-precision scientific equipment, providing stable optical performance.
| Optical Property | Value |
| Transmission Range | 1.2-15 μm |
| Refractive Index | 3.41776 @ 10μm |
| Reflection Loss | 46.1% @ 10μm |
| Structure | Single crystal, synthetic |
| Cleavage Planes | <111 |
| Physical Property | Value |
| Density | 2.33 g/cm³ |
| Melting Point | 1414 ℃ |
| Thermal Conductivity | 163 W/(m·K) @ 313K |
| Thermal Expansion | 2.6 × 10⁻⁶/K @ 293K |
| Knoop Hardness | 1100 kg/mm² |
| Specific Heat Capacity | 712.8 J/(kg·K) |
| Dielectric Constant | 13 @ f = 9.37 GHz |
| Young's Modulus | 130.91 GPa |
| Shear Modulus | 79.92 GPa |
| Bulk Modulus | 101.97 GPa |
| Poisson's Coefficient | 0.266 |
| Chemical Property | Value |
| Solubility | Insoluble |
| Molecular Weight | 28.09 g/mol |
| Parameter | Range |
| Diameter Range | 2-300 mm |
| Thickness | 0.12-60 mm |
| Surface Finish | 80-50, 60-40, 40-20, 20-10, 10-5 |
| Surface Accuracy | λ/2, λ/4, λ/8, λ/10 |
| Parallelism | <3' - 30" |
| Aperture Transmission | >90% |
| Coating | Customizable |
