定日镜(heliostat)是一种带有镜子的装置,通常是平面镜,其转动以使阳光反射到预定目标。主要用于太阳能热电厂
The Solar Two solar-thermal power project near Daggett, California. Every mirror in the field of heliostats reflects sunlight continuously onto the receiver on the tower.
Dominador Solar Thermal Plant in Chile.