Optical Windows & Viewports | Borosilicate, Quartz & Sapphire

High-performance optical windows in borosilicate glass, fused quartz, and sapphire. We supply round and square viewports with custom AR, HR, and protective coatings. Ideal for vacuum chambers, laser systems, and harsh environment applications.

DN70 DN80 Optical Window for Pressure Vessels & Sensor Protection

Standard size DN70/DN80 optical windows provide clear viewing for pressure vessels, industrial sensors and equipment protection.

Heat-Resistant Lighting Window Glass for Stage Lights & Projectors

High-transmission borosilicate windows for stage lights . Withstands high temperatures with excellent optical clarity and durability.

Industrial Sight Glass for Pressure Vessels & Chemical Reactors

High-strength borosilicate sight glasses withstand harsh industrial environments. Perfect for monitoring chemical processes safely.

High Temperature Viewport Windows for Boilers & Heating Systems

Heat-resistant viewport windows maintain clarity in boilers and heating systems. Withstand thermal cycling and pressure changes.

Fused Silica UV Windows for High Power Laser & UV Lighting Systems

Premium fused silica windows provide high UV transmission and laser damage threshold for demanding optical applications.

Chemical Resistant Sight Glass for Pharmaceutical & Food Processing

Corrosion-resistant sight glasses ensure safe viewing in pharmaceutical and food processing applications. Easy to clean and maintain.

For Industrial Furnaces & Sensors: High-Temp Viewing Windows

Our robust, round viewing windows maintain clarity under extreme heat in demanding applications.

High Temperature Optical Windows for Industrial Heating & Monitoring

Heat-resistant optical windows maintain stability in high-temperature industrial processes and monitoring systems.

Wear-resistant sapphire optical windows for extreme environments

Durable sapphire windows provide exceptional hardness and resistance to harsh environments and abrasion.

Scratch Resistant Optical Windows for Durable Equipment Protection

Hard-coated scratch resistant optical windows protect sensitive equipment while maintaining optical clarity.

For Industrial Furnaces & Sensors: High-Temp Viewing Windows

Our robust, round viewing windows maintain clarity under extreme heat in demanding applications.

Borosilicate optical windows for lighting and industrial applications

High-quality borosilicate optical windows offer excellent thermal shock resistance for lighting systems and industrial equipment.

Complete product samples within 21 day

We have advanced production equipment, the latest tempered glass technology, and strong customized production capabilities. We have a mature logistics team that can transport products to customers in a timely and safe manner.

Inquiry and Confirmation
Receive and confirm the customer’s inquiry, ensuring accurate specifications and information.
Quotation and Sample Preparation
Prepare and send the quotation. Once confirmed by the customer, create the sample.
Sample Delivery and Feedback
Deliver the sample to the customer, gather feedback, and confirm the sample meets requirements.
Bulk Order Confirmation and Production
Once the sample is approved, confirm the bulk order, verify details, and start mass production.
Quality Inspection and Packaging
Conduct quality checks after production to ensure standards are met and packaged as required.
Shipping and Delivery

Our other products

Rod Lens

Source custom Rod Lens
  • From prototyping to production
  • Huge selection of high-quality materials & finishes
  • Get full IP protection and quality documentation
See Our Custom Glass

Aspherical Lens

Source Custom Aspherical Lens
  • From prototyping to production
  • Huge selection of high-quality materials & finishes 
  • Get full IP protection and quality documentation
See Our Custom Glass

Optical Prisms

Source Custom Optical Prisms
  • From prototyping to series production
  • Huge selection of high-quality glass materials
  • Get full IP protection and quality documentation
See Our Custom Glass

Contact Us

Your feedback fuels our growth, and your questions drive our solutions.

We value your feedback, inquiries, and suggestions. Please feel free to get in touch with us

General inquiries

Please contact us via sales@bo-glass.com, and we will reply to you as soon as possible.

Interested to work with us

Drop your resume at info@bo-glass.com
and we will get back to you shortly.

    We uses the contact information you provide to us to contact you about our relevent content, products, and services.