Solar heat collector, sunlight collecting reflector, sunlight collecting system, and solar energy utilization system

摘要

A sunlight collecting reflector comprises a plurality of first reflectors (12) on which a sunlight is reflected towards an upper light collecting point; and a reflector group (11) constituted by a plurality of reflector segments (21-26) on which the reflected sunlight on the plurality of first reflectors is reflected to a lower light collecting point in a heat collector (13), wherein each of the plurality of the reflector segments (21-26) has reflecting surfaces (21a-26a) which make the sunlight converge on the lower light collecting point, and the reflecting surfaces (21a-26a) of the reflector segments (21-26) comprised in the reflector group (11) are arranged along quadrics of revolution whose confocus is located at the lower light collecting point of the sunlight and whose curvature radiuses are different.