Low Thermal Expansion Ceramic Mirrors

PHOTO: Low Thermal Expansion Ceramic Mirrors

High-rigidity enabled, 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.

Features

  • High Specific Rigidity
  • Low Thermal Expansion
In addition to providing ceramic components, Kyocera also offers precision polishing and mirror polishing.
Inquiries
  • Product specs
  • Features
  • Applications

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
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* Results are based on the model above.
  Investigated in Kyocera.

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Physical properties compared with
low thermal expansion glass


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Temperature dependence graph

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* All values are typical data from test pieces. The values are not guaranteed values.

Applications

Mirrors for telescopes

Mirrors for semiconductor processing equipment


Mirrors for three-dimensional measuring machines