OPTICAL CONDENSER, AND HEAT COLLECTION APPARATUS AND SOLAR THERMAL POWER GENERATION APPARATUS EQUIPPED THEREWITH

摘要

A mirror structure (31) having a plurality of mirrors (32) has a centre of gravity (Q1) located between the plurality of mirrors (32). A driving device (40) for rotating the mirror structure (31) is provided with: a first rotational shaft (52) which has a first rotational axis (A1) as the central axis thereof, and which is rotatably supported by a supporting base (80); a first drive mechanism (60) for rotating the first rotational shaft (52); a second rotational shaft (42) which has the mirror structure (31) mounted thereto, which has a second rotational axis (A2) orthogonal to the first rotational axis (A1) as the central axis thereof, and which is rotatably attached to the first rotational shaft (52); and a second drive mechanism (45) for rotating the second rotational shaft (42). The centre of gravity (Q1) of the mirror structure (31) is located in the centre of the first rotational shaft (52) and in the centre of the second rotational shaft (42).