Patent ID: 7115851

Claim:
A heliostat device comprising: planar reflectors and a frame, an azimuth angle adjusting mechanism, an altitudinal angle adjusting mechanism, a sunlight tracking sensor, the azimuth angle adjusting mechanism comprising a vertical shaft and a sleeve for the vertical shaft, a bottom support rotating around a central axial line (ZZ′) of the vertical shaft, the altitudinal angle adjusting mechanism comprising at least one transversal main turning shaft parallel with the planar reflectors, the intersecting point (O 1 ) in space of the vertical shaft axial line and the transversal main turning shaft axial line or the setting point (O 2 ) on the shortest connecting line between the two axial lines coincides with the center of one of the planar reflectors, and a directed sensor with a light sensing surface facing the planar reflector, a central axial line of the directed sensor coincides or is parallel with the connecting line (O 1 O′) or (O 2 O′) of the intersecting point (O 1 ) or setting point (O 2 ) with the center (O′) of the directed projection area.