Owing to its high hardness (Mohs hardness grade 9), excellent light transmittance (covering the ultraviolet to near-infrared wavelength range), high-temperature resistance, and chemical stability, sapphire optics window wafers are mainly applied in scenarios that require resistance to extreme environments and high optical performance. The specific applications are as follows:
Optics and Testing Field
- High-end optical instruments: Used as optical windows for microscopes, spectrometers, and laser equipment, ensuring that the lenses are not easily scratched during long-term use and the light transmittance remains stable.
- Infrared detection equipment: Suitable for windows of infrared thermometers and thermal imagers. Due to its low absorption property in the infrared wavelength range (especially 3-5μm), it ensures detection accuracy.
Industrial and Mechanical Field
- High-pressure/high-temperature observation windows: Applied as observation windows for petrochemical reaction kettles, high-pressure boilers, and rocket engine combustion chambers, withstanding extreme pressure (up to several thousand atmospheres) and temperature (up to approximately 2000℃).
- Wear-resistant component windows: Such as protective windows for CNC machine tools and laser cutting/welding equipment, resisting the impact and wear of metal chips and dust.
Consumer Electronics and Semiconductor Field
- High-end electronic screens: Previously used as protective lenses for the rear cameras of some flagship mobile phones (e.g., certain models of vivo and Huawei) and watch glasses of smartwatches, with better anti-drop and anti-scratch performance than ordinary glass.
- Semiconductor manufacturing: Served as optical windows for lithography equipment and plasma etching machines, withstanding the erosion of photoresist and corrosive gases, and ensuring the precision of chip manufacturing.
Aerospace and Military Field
- Aircraft optical systems: Used as optical windows for aircraft portholes (of some special aircraft models) and missile seekers, withstanding low temperatures at high altitudes, air flow impact, and particle wear during high-speed flight.
- Military detection equipment: Adapted to optical components of night-vision devices and radars, maintaining stable optical performance in complex battlefield environments (such as high humidity, heat, and sand and dust).
Medical Field
- Medical instrument windows: Act as optical protective parts for dental laser therapy instruments and ophthalmic surgical equipment (e.g., femtosecond laser instruments), combining biocompatibility and resistance to disinfection (such as disinfection with alcohol and high-temperature sterilization).
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