Custom Fused Quartz Windows
Shanghai Optics manufactures custom fused quartz windows with surface quality up to 10/5 Scratch-Dig for UV, visible, and infrared optical systems. Our fused quartz windows provide excellent optical transmission, low thermal expansion, outstanding chemical resistance, and high thermal stability for demanding laser, semiconductor, scientific, industrial, and high-temperature applications.
Available in standard and custom dimensions, our fused quartz windows can be manufactured with surface quality up to 10/5 Scratch-Dig, precision polishing, tight dimensional tolerances, custom optical coatings, drilled holes, wedges, bevels, and complex geometries to meet prototype, OEM, and volume production requirements.
Typical Applications
- Laser Systems: High thermal stability and reliable optical transmission make fused quartz windows suitable for laser processing, beam delivery, and industrial laser systems.
- Semiconductor Equipment: Used as protective optical windows for semiconductor inspection, metrology, and wafer processing equipment.
- Scientific Instruments: Excellent chemical durability and optical stability support spectroscopy, laboratory instruments, and analytical systems.
- Industrial Optics: Designed for machine vision, optical sensors, industrial inspection, and process monitoring.
- High-Temperature Environments: Low thermal expansion and excellent heat resistance make fused quartz windows ideal for furnaces, vacuum systems, and harsh industrial environments.
- Optical Sensors: Protective optical windows for UV, visible, and infrared sensing systems.
Why Choose Fused Quartz Windows?
Fused quartz windows are valued for their excellent optical performance, durability, and cost-effectiveness. Compared with conventional optical glass, fused quartz offers superior thermal stability, excellent chemical resistance, and reliable transmission across ultraviolet, visible, and near-infrared wavelengths.
Key advantages
- Transmission over 80% from 260–2500 nm
- High temperature resistance up to 1050°C
- Low coefficient of thermal expansion
- Excellent chemical durability
- Good mechanical strength
- Suitable for demanding industrial environments
These characteristics make fused quartz windows an excellent choice for industrial laser systems, semiconductor equipment, high-temperature processing, scientific instrumentation, and optical sensing applications where durability and stable optical performance are essential.
Fused Quartz vs Fused Silica
Although fused quartz and fused silica share many optical properties, they differ in raw material and manufacturing process.
Fused Quartz | Fused Silica |
Natural quartz | Synthetic silica |
Lower cost | Higher purity |
Excellent thermal stability | Better UV transmission |
Industrial applications | Precision optics |
Fused Quartz Windows Custom Specifications:
Specification | Capability |
Diameter | 1–500 mm (Commercial grade up to 1300 × 1300 mm) |
Thickness | 0.1–50 mm |
Tolerance | Up to ±0.02 mm |
Surface Quality | 80/50 to 10/5 Scratch-Dig |
Surface Flatness | λ/10 @633 nm |
Parallelism | Up to 5 arc sec |
Materials | Commercial Quartz, Heraeus Herasil, GE124, OHARA SK1300, Corning 7980 |
Coatings | AR, Silver, Gold |
Custom Options | Wedges, holes, polished edges, bevels, custom shapes |
The specifications above represent our standard manufacturing capabilities. Custom dimensions, optical coatings, edge treatments, and precision tolerances are available upon request.
Custom Manufacturing
Shanghai Optics manufactures custom fused quartz windows to meet a wide range of optical and mechanical requirements. Our capabilities include:- Custom diameters and thicknesses
- Large-format fused quartz windows
- Precision polishing
- Drilled holes and slots
- Wedges and custom geometries
- Polished edges and bevels
- AR, Silver, and Gold coatings
- Prototype to OEM production
Frequently Asked Questions
What is a fused quartz window?
Fused quartz windows are flat optical components made from natural quartz that provide excellent thermal stability, chemical resistance, and optical transmission for industrial and scientific applications.
What is the difference between fused quartz and fused silica?
Fused quartz is manufactured from natural quartz, while fused silica is produced from synthetic silicon dioxide. Fused silica offers higher purity and better UV performance, whereas fused quartz is often selected as a cost-effective solution for industrial optical systems.
What temperatures can fused quartz windows withstand?
Fused quartz windows can typically operate at temperatures up to 1050°C, making them suitable for furnaces, industrial processing equipment, and other high-temperature environments.
What coatings are available?
Shanghai Optics offers anti-reflection (AR), silver, gold, and other custom coatings based on wavelength and application requirements.
Can Shanghai Optics manufacture custom fused quartz windows?
Yes. We manufacture custom fused quartz windows with flexible dimensions, thicknesses, coatings, edge finishes, drilled holes, and OEM production capabilities.
Which fused quartz material does Shanghai Optics use?
Shanghai Optics manufactures fused quartz windows using high-quality materials including Heraeus Herasil, GE124, OHARA SK1300, and commercial fused quartz, allowing us to recommend the most suitable material based on optical performance, operating environment, and budget requirements.
Need Custom Fused Quartz Windows?
Whether you need standard fused quartz windows or fully customized optical windows for laser systems, industrial equipment, semiconductor manufacturing, or scientific research, Shanghai Optics can help.
Our Capabilities
- Custom dimensions and thicknesses
- Precision polishing
- AR, Silver, and Gold coatings
- Large-format quartz windows
- Prototype and OEM production
