Quartz Glass Window is a high-performance optical and industrial component made from high-purity fused silica. It is designed for extreme environments including high temperature furnaces, UV sterilization systems, semiconductor equipment, and precision optical instruments.
Quartz Glass Window is a high-performance optical and thermal component widely used in UV systems, high temperature furnaces, and precision optical equipment. Made from high-purity fused silica, it maintains excellent structural stability under extreme temperature fluctuations and strong ultraviolet radiation.
Unlike borosilicate or standard glass, quartz glass windows offer superior UV transmission, thermal shock resistance, and chemical stability, making them essential for semiconductor, optical, and industrial applications.
Quartz Glass Window Technical Data
Material Properties
Material: Fused Silica (SiO₂ ≥ 99.99%)
Density: 2.2 g/cm³
Hardness: Mohs 5.5–6
Surface Quality: Bubble-free, high optical clarity
Thermal Properties
Working Temperature: 1100–1200°C
Softening Point: 1750°C
Annealing Point: 1215°C
Thermal Expansion Coefficient: 5.5 × 10⁻⁷ /°C
Optical Properties
UV Transmission Range: 200–250 nm, transmission >80%
Visible Light Transmission: >93% (typical thickness)
IR Transmission: Stable transmission across infrared spectrum
Quartz Glass Window Types
UV Grade Quartz Glass Window
Designed for UV sterilization systems, UVC lamps, and photochemical equipment requiring high UV transmission and stability under ultraviolet exposure.
Optical Grade Quartz Glass Window
Used in precision optical instruments, imaging systems, and measurement devices requiring high transparency and low optical distortion.
High Temperature Furnace Window
Engineered for high temperature observation systems, furnace inspection ports, and thermal processing equipment operating above 1000°C.
Semiconductor Grade Quartz Window
Applied in semiconductor manufacturing equipment, wafer processing systems, and vacuum environments requiring ultra-high purity and stability.
Fully customized quartz glass windows manufactured according to drawings, including complex shapes, tight tolerances, and specialized engineering requirements.
UV Radiation Stability
Quartz glass windows maintain stable molecular structure under prolonged UV exposure, preventing discoloration, degradation, or optical failure in UV systems and sterilization equipment.
Ultra-Low Thermal Expansion
The extremely low thermal expansion coefficient minimizes internal stress under rapid temperature changes, ensuring excellent resistance to thermal shock and preventing cracking in high temperature environments.
Wide Optical Transmission Range (UV–IR)
Quartz glass windows provide stable and continuous transmission from deep ultraviolet to infrared wavelengths, making them ideal for optical systems, UV equipment, and precision measurement devices.
High Vacuum & High Temperature Stability
Due to its dense and stable silica network, quartz glass maintains structural integrity in vacuum environments and high-temperature industrial processes above 1000°C.
UV Sterilization & UVC Systems
Quartz Glass Windows are used as protective optical interfaces in UV sterilization and UVC lamp systems, providing high UV transmission while maintaining structural stability under continuous ultraviolet exposure.
Semiconductor Wafer Processing Equipment
Applied in semiconductor manufacturing systems, quartz glass windows ensure high purity, vacuum compatibility, and stable optical performance during wafer processing and inspection.
High Temperature Furnace Observation Windows
Used in industrial furnaces and thermal processing equipment, quartz glass windows allow real-time observation while withstanding temperatures above 1000°C without deformation.
Optical Measurement & Imaging Instruments
Ideal for precision optical systems, ensuring minimal signal distortion and stable transmission across UV–IR wavelengths for accurate measurement results.
Chemical Processing Equipment
Resistant to acids, solvents, and corrosive gases, quartz glass windows are widely used in chemical reactors and harsh industrial environments.
Laboratory & Research Systems
Used in laboratory equipment and scientific instruments requiring high optical clarity, thermal stability, and chemical resistance for experimental accuracy.
CNC High Precision Machining
Advanced CNC machining technology enables high-precision manufacturing of quartz glass windows with strict dimensional accuracy and smooth surface finishing, suitable for optical and industrial applications.
Laser Cutting & Drilling
High-energy laser processing allows precise cutting and drilling of complex quartz glass window shapes without compromising material integrity or optical performance.
Edge Polishing & Chamfering
Professional edge finishing ensures smooth, burr-free quartz glass window edges, improving mechanical strength, safety, and optical clarity.
Custom Drawing Production
We support full customization based on technical drawings, enabling the production of quartz glass windows with complex geometries and application-specific requirements.
Tight Tolerance Control
Strict dimensional tolerance control ensures consistent quality in quartz glass window production, meeting high-precision requirements for semiconductor, optical, and industrial systems.
OEM / ODM Manufacturing Support
We provide full OEM and ODM services for quartz glass window manufacturing, supporting private labeling, engineering collaboration, and customized industrial solutions.
Each quartz glass window is manufactured under strict quality control procedures to ensure consistent performance and reliability.
Key inspection standards include:
Dimensional accuracy measurement
Optical clarity inspection
Surface quality and bubble-free testing
Thermal resistance verification
Batch consistency control
Our production system ensures stable quality for industrial-grade quartz glass windows used in optical, UV, semiconductor, and high temperature applications.
Quartz glass windows are fragile precision components, therefore professional export packaging is essential to ensure safe transportation.
We use:
Multi-layer protective foam packaging
Reinforced wooden export crates
Shock-proof and moisture-resistant design
Custom labeling for OEM orders
We support global shipping via air, sea, and express delivery (DHL, FedEx, etc.), ensuring safe and timely delivery worldwide.