The sapphire optical window is a high-performance optical component manufactured from premium-grade single-crystal aluminum oxide (Al₂O₃). Known for its exceptional hardness, thermal resistance, and chemical stability, sapphire is one of the most reliable materials for demanding industrial, scientific, and medical applications.
This optical window is engineered to operate in extreme environments where conventional materials such as glass or quartz fail. With a purity level of up to 99.995%, it ensures superior optical clarity and minimal signal loss. The standard configuration features a 20 mm diameter (2 cm), while thickness and other dimensions can be fully customized to meet specific pressure, mechanical strength, or integration requirements.
With an outstanding transmission range from ultraviolet (190 nm) to mid-infrared (5 µm), this sapphire window supports a wide variety of optical systems, including spectroscopy, laser systems, and infrared sensing technologies. Its robust structure allows it to withstand high-pressure environments, rapid thermal cycling, and exposure to corrosive chemicals without compromising performance.
Belangrijkste kenmerken
Exceptional Thermal Stability
Sapphire optical windows can withstand extreme temperatures up to 2000°C, with stable continuous operation between 1500°C and 1700°C. This makes them ideal for high-temperature furnaces, combustion chambers, and vacuum systems where thermal shock resistance is critical.
Ultra-High Hardness and Durability
With a Mohs hardness of 9, sapphire is second only to diamond, providing outstanding resistance to scratching, abrasion, and mechanical wear. This ensures long-term optical clarity and significantly reduces maintenance and replacement costs.
Superior Chemical Resistance
Sapphire exhibits excellent resistance to acids, alkalis, and corrosive gases. Unlike traditional glass materials, it does not degrade or react in aggressive chemical environments, making it suitable for analytical chemistry and industrial processing applications.
Breed optisch transmissiebereik
The material offers excellent transmission from 190 nm in the ultraviolet region to 5 µm in the infrared spectrum. This broad range supports high-precision optical measurements, imaging systems, and sensor technologies.
Flexible Customization Options
To meet diverse application requirements, the sapphire optical window can be fully customized in terms of:
- Outer diameter (OD)
- Inner diameter (ID)
- Dikte
- Surface finish (DSP, SSP, CMP, MP)
- Optical quality standards (e.g., 60/40, 40/20 scratch-dig)
Toepassingen
Analytical and Spectroscopy Systems
Sapphire optical windows are widely used in FTIR and UV-Vis spectroscopy cells. Their chemical inertness allows accurate analysis of corrosive liquids and gases without contamination or degradation. The mechanical strength also enables operation under high-pressure sampling conditions.
High-Temperature Industrial Equipment
In furnaces, reactors, and vacuum chambers, sapphire windows serve as durable observation ports. They allow infrared sensors and monitoring systems to capture accurate data even at temperatures exceeding 1000°C. Their resistance to thermal shock ensures stable long-term operation.
Medical and Surgical Imaging
Sapphire windows are commonly used as protective covers for medical imaging devices and laser systems. Their high hardness prevents scratching during repeated sterilization processes, while their biocompatibility makes them suitable for sensitive medical environments.
Aerospace and Harsh Environment Sensors
Due to their ability to withstand extreme pressure, temperature fluctuations, and abrasive conditions, sapphire optical windows are ideal for aerospace sensors, deep-sea exploration equipment, and defense applications.
Specifications
| Eigendom | Specificatie |
|---|---|
| Materiaal | Single Crystal Al₂O₃ (Sapphire) |
| Purity | ≥ 99.995% |
| Hardheid | Mohs 9 |
| Overdrachtsbereik | 190 nm – 5 µm |
| Afwerking oppervlak | DSP / SSP / CMP / MP (Customizable) |
| Optical Quality | 60/40, 40/20 Available |
| Temperature Resistance | Up to 2000°C |
| Continuous Working Temp | 1500–1700°C |
| Chemische weerstand | Excellent (Acids, Alkalis, Plasma) |
| Thermische geleidbaarheid | High |
| Tolerance | ±0.25 mm |
| Maat | Fully Customizable |
FAQs
Q1: What material is used for this sapphire optical window?
A: The window is made from high-purity single-crystal aluminum oxide (Al₂O₃), which provides excellent optical, thermal, and mechanical properties.
Q2: What is the maximum operating temperature?
A: Sapphire can withstand temperatures up to 2000°C, with continuous operation typically between 1500°C and 1700°C depending on environmental conditions.
Q3: Can I customize the dimensions?
A: Yes, we offer full customization including diameter, thickness, inner diameter, and surface finish to meet your exact specifications.
Q4: What surface finishes are available?
A: We provide optical-grade polishing (e.g., 60/40, 40/20) as well as industrial-grade finishes based on application requirements.
Why Choose Sapphire Over Glass or Quartz?
Compared to traditional optical materials, sapphire offers significantly higher hardness, better thermal stability, and superior chemical resistance. While quartz provides good optical performance, it cannot match sapphire in extreme environments involving high temperature, pressure, or corrosive exposure. This makes sapphire the preferred choice for mission-critical applications.
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