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Silicon carbide mirror

Special Design and Technology Bureau with Pilot Production ISP NASU
Volodymyr Maslov

This solution can be applied in optical industry for telescopes mirrors manufacturing.
A mirror is manufactured from two materials with the similar coefficient of thermal expansion: Si ( lower details) and glass-ceramic ( top optical layer).
The offered technical solution has following advantages:
-    high quality of optical surface;
-    ecologically clear manufactures technologies;
-    opportunity of manufacturing large-sized  mirrors;
-    simplicity of manufacturing due to opportunity of  traditional optical manufacturing equipment applying;
-    relatively low cost in comparison with analogues due to opportunity of mirror base manufacturing with  powder-like metallurgy method.
Diameter of mirror - 150 mm and thickness - 30 mm. Quality of optical surface N=1÷3, ΔN=5, R_Z=0.05÷0.025