Thermophotovoltaic converter. A device for converting heat into electricity that directly transforms the radiant heat (photons) into electricity through the photovoltaic effect. In this invention, the photovoltaic cell is located inside an incandescent cavity, or emitter, which is heated by an external thermal source. The cell consists of two faces arranged to absorb the thermal radiation of the walls of said cavity. In order to dissipate the heat not converted into electricity by the cell, it is surrounded by a heat-carrying fluid that is transparent to the thermal radiation in the spectral range of response of the photovoltaic cell. (Machine-translation by Google Translate, not legally binding)