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Sapphire window plate with a circular aperture is a high-performance optical component renowned for its exceptional hardness, superior thermal stability, and outstanding optical clarity. Manufactured from crystalline sapphire (Al₂O₃), it offers excellent scratch resistance, minimal optical distortion, and broad spectral transmission, making it an essential material for laser systems, infrared imaging, aerospace applications, and precision scientific instruments. Its durability and ability to withstand extreme environments ensure long-term reliability in demanding optical applications.
Product Overview
The sapphire circular aperture window plate is a high-quality optical element made from sapphire crystal. Sapphire material is known for its exceptional strength and hardness, along with high-temperature stability and corrosion resistance, allowing it to maintain superior optical performance even in extreme environments. The circular aperture design ensures precise control over light transmission and provides highly efficient optical performance for various optical systems.
Key Features
- High Strength and Hardness: Sapphire window plates have outstanding hardness and scratch resistance, ensuring long-lasting optical performance in demanding environments. Ideal for high-performance applications that require durable optical components.
- High-Temperature Stability: Sapphire material maintains its optical properties and stability even at high temperatures, making it suitable for use in environments with extreme temperature fluctuations.
- Corrosion Resistance: Sapphire exhibits excellent resistance to many chemical substances, ensuring that it performs reliably in complex and harsh environments.
- Precise Optical Performance: The circular aperture design allows for accurate control of light transmission, providing precise beam characteristics to meet specific optical requirements.
- High Transmission and Low Scatter: Ensures efficient optical signal transmission, minimizing light loss and scatter, and providing high-quality optical imaging performance.
Applications
Sapphire circular aperture window plates are widely used in advanced optical systems, particularly in the following areas:
- Sensor and Detector Protection Windows: Sapphire window plates are used to protect the internal components of sensors and detectors, effectively isolating them from external environmental impacts.
- Lasers and Optical Instruments: Due to their high transparency and durability, sapphire window plates are commonly used in laser systems and optical instruments, ensuring stable light signal transmission.
- Optical Communication Systems: Sapphire’s stability and high transmission make it suitable for use in optical communication systems, ensuring reliable signal transmission.
- MOCVD Epitaxial Substrates: Sapphire window plates are also used as substrates for epitaxial growth and in other optical research applications, thanks to their excellent material properties.
| Optical Property | Value |
| Transmission Range | 0.2-5 μm |
| Refractive Index (Ne) | 1.7771 |
| Structure | Trigonal crystal system |
| Physical Property | Value |
| Density | 3.98 g/cm³ |
| Melting Point | 2030 ℃ |
| Thermal Conductivity | 25.2 W/(m·℃) |
| Thermal Expansion | 5.66×10⁻⁶ ℃⁻¹ |
| Specific Heat Capacity | 0.7610×10³ J/(kg·℃) |
| Young's Modulus | 34-37 GPa |
| Volume Elasticity Coefficient | 250 GPa |
| Poisson's Coefficient | 0.309 |
| Chemical Property | Value |
| Molecular Weight | 101.96 g/mol |
| Solubility | 98×10⁻⁶ g/L |
| 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 |
