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Home / All / Glass industry trends and buying guide / A Complete Guide to Optical Glass Domes & ZnS Infrared Windows

A Complete Guide to Optical Glass Domes & ZnS Infrared Windows

Apr 22,2026
In precision optical engineering, high-performance optical components determine the stability and efficiency of optical equipment. As a professional manufacturer of custom optical elements, we focus on optical glass domes and infrared optical windows, providing reliable optical solutions for underwater surveillance, security cameras, laser systems and infrared detection equipment around the world.
 
Optical Glass Domes: The Core Protective Optical Component
 
Optical glass domes are hemispherical optical parts made of high-quality optical glass materials, mainly including BK7/K9 glass, fused silica, high borosilicate glass and other high-transmittance materials. They are widely used in underwater cameras, marine monitoring equipment, CCTV security systems and aerospace optical devices.
 
Our optical glass domes support diversified customized designs: edge-free plain domes, flat-bottom domes and flanged domes, which can meet different installation needs. With precision polishing technology and professional anti-reflection (AR) coating, our domes feature ultra-high light transmittance, low optical distortion, high pressure resistance and waterproof performance, adapting to harsh underwater, outdoor and high-pressure working environments.
 
Key Optical Glass Dome Types & Applications
 
- BK7/K9 Glass Domes: Ideal for CCTV surveillance cameras, general optical imaging, with high light transmittance and low cost.
- Fused Silica Domes: High temperature resistance, low thermal expansion, perfect for underwater ROV and deep-sea monitoring.
- Borosilicate Glass Domes: Good balance of strength and transparency, suitable for industrial optical detectors.
 
ZnS Infrared Windows: Professional for 10.6μm Infrared Applications
 
ZnS (Zinc Sulfide) infrared windows are key optical components for infrared optical systems, specially designed for 10.6μm wavelength infrared laser and thermal imaging equipment. Made of high-purity zinc sulfide crystal materials, they have excellent infrared light transmittance and stable optical performance.
 
We provide customized ZnS infrared windows with anti-reflection coating, which effectively reduce light reflection loss, improve the sensitivity and accuracy of infrared detection and laser systems. They are widely used in industrial infrared detectors, thermal imaging cameras, laser optical equipment and military optical systems, supporting customized sizes and precision tolerance processing.
 
Why ZnS for 10.6μm Infrared Systems?
 
- High transmittance in 10.6μm infrared band, meeting CO2 laser and thermal imaging needs.
- Hard and durable crystal structure, suitable for harsh industrial and outdoor environments.
- Customizable AR coating, reducing surface reflection loss by over 95%.
 
Why Choose Our Custom Optical Components?
 
1. Material Selection
 
We provide a full range of optical material options, from conventional optical glass to infrared crystal materials, to meet the needs of different optical application scenarios.
 
2. Customized Processing
 
Support OEM & ODM customized services, adjustable size, shape, coating and tolerance, suitable for mass production and small-batch customized R&D.
 
3. High Precision Quality
 
Strict quality control in each production process, ensuring ultra-high surface accuracy, low distortion and stable optical performance.
 
4. Wide Application Coverage
 
Products are widely used in underwater monitoring, security surveillance, industrial optics, laser equipment and infrared thermal imaging fields, exported to global markets.
 
Final Thoughts
 
Whether you need standard optical glass domes or custom ZnS infrared windows, we always provide high-quality, high-precision optical components and professional after-sales service. As a reliable optical component supplier, we are committed to helping global customers optimize optical system performance and achieve business growth.
 
If you have customized needs for optical elements, please feel free to contact us, and we will provide you with a professional optical solution!

Learn more from our FAQ
Can you customize the samples style according to my design requirement?

Of course! We can customize the process according to your needs: shape cutting, AR AG coating, high temperature oven, polishing and tempering, anti-UV ink printing, based on our mature supply system for processing and customization

Can I get a sample with my own logo?

Since customized samples and shipping costs are high for both parties, in order to ensure a win-win situation for both parties and quality assurance, we only provide high-quality samples. But we can also provide existing product renderings and design mold services. Usually, we will first provide product renderings with your LOGO as a reference. Click to learn more about free samples

What is your Production MOQ?

The minimum order quantity for our factory production is flexible and negotiable. Usually the MOQ is 100 pieces, and lower quantity is acceptable for trial order. Please feel free to let us know the quantity you need.

Can I purchase your products in bulk? How is the MOQ?

Yes. Our MOQ is flexible and can be negotiated,Each variety starts at 100-500pcs.

How is the payment?

30% Deposit for order confirmation, 70% balance payment within one day before delivery.

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