Abstract: The invention concerns a device for collecting infrared solar radiation by heating a circulating blade of air circulating between two transparent glazed walls. The first glazed wall polarises light in a circular manner. The second glazed wall reflects infrared radiation towards the first glazed wall. The infrared radiation which has been reflected has changed polarisation direction and is then absorbed by the first glazed wall which heats up, and in turn heats the circulating blade of air in contact with same.

Abstract: An heliostat includes a plane mirror and a first axis of rotation which is positioned parallel to the axis of rotation of the Earth. The solar radiation reflected by the mirror is permanently oriented toward a stationary Fresnel lens which is perpendicular to the first axis of rotation and which concentrates the solar radiation toward a stationary target. A solar field is composed of a plurality of heliostats according to such characteristics and all the first axes of rotation of which are rotated by a mechanical linkage coupled to a rod which is moved by a single motor. This arrangement reduces the total cost of the installation.