Abstract: The invention relates to a method of increasing the output power from photovoltaic cells with different known systems and of reducing to a minimum the temperature of photovoltaic cells, which negatively affects the voltage. The system used to perform the invention method comprises prisms which are disposed on several adjacent surfaces, forming angles therebetween, and calculated such that all of the refracted light rays converge fully on the surface of the solar module. The material used for said prisms absorbs most of the ultraviolet rays.

Abstract: A light-source multiplication device having a light transmissive portion including one substantially planer face and an opposite face with multiple facets, a light emitting diode for generating light juxtaposed with and directed towards the light transmissive portion, wherein the facets on the light transmissive portion are angled such that images of light from the light emitting diode project in parallel from each facet.

Abstract: A light-source multiplication device useful in a warning light device, a traffic signal light device, a light display or a lighted sign includes light-emissive diodes as light sources with a multi-prism having facets having apices on an imaginary spherical surface for providing multiple images of the light-emissive diodes, some of which can be viewed over a wide field of vision, thereby minimizing power and maintenance requirements of the device.