Low Thermal Expansion Ceramic Mirrors
Highly rigid and extremely thin with reduced weight.- By utilizing dense cordierite with a low thermal expansion coefficient, deformation due to temperature change is suppressed.
- Due to the thin shape enabled by the high rigidity, and the complicated rib structures, weight can be reduced to approximately 1/3 compared with low thermal expansion glasses (based on Kyocera simulation).
- These materials offer excellent machinability yielding higher productivity for complicated shapes as well as shorter production times.
Property
High Specific Rigidity
Low Thermal Expansion
Product specs
- Material
- Cordierite
- Special process
- Weight reduction is possible by utilizing rib structures.
Features
Deflection depth compared with low thermal expansion glass
Deflection depth when supported by three points: Low thermal expansion glass vs. Ceramics Conditions for investigation
- Product size: φ1020 × 120mm (Rib structure)
- Supported position: Three points at the circumference
- Load : Own weight only
Physical properties compared with low thermal expansion glass
Temperature dependence graph
Applications
- Mirrors for telescopes
- Mirrors for semiconductor processing equipment
- Mirrors for three-dimensional measuring machines