Large Aperture Telescope Mirror Blanks & Pre-Polished Substrates
Fine-ground mirror substrates (600 grit) | For research, observatories and engineering projects
What We Deliver
Large fused silica mirror blanks up to 1.8 m, concave fine-ground to 600 grit.
- Mirror blanks up to 1.8 m diameter
- Fused silica
- Concave fine grinding from flat blanks
- Standard delivery: fine-ground to 600 grit
Why Research Teams Outsource This Stage
The early grinding stage of large-aperture mirrors is time-consuming, high-risk and equipment-intensive. By outsourcing this stage, research teams can focus their resources on precision figuring, testing and system integration.
Reduced polishing time
Lower material risk
Shorter project cycle
No over lap with customers’ core optical work
Typical Applications
University and institutional
Research and development telescopes
Engineering validation mirrors
Optical system prototypes
Segmented mirror pre-projects
Technical Overview
- Main diameter range: 300 mm – 1800 mm
- Materials: Fused silica
- Surface condition: Fine-ground, ready for polishing
- Geometry: Concave spherical (custom radius)






Discuss Your Mirror Substrate Requirement
High quality customer service is the daily priority of ISATE Glass Industrial Limited. This includes quality of products, service and deliveries to ensure that its business and individual customers remain satisfied and loyal.