NOVELTY - Layered waveguide stack radiant energy converter array comprises superposed waveguides (100), each having core layer disposed with radiant energy converter, and two conductive cladding layers disposed on opposing sides of core layer, and connected to converter as a charge carriers; each waveguide having inlet for passage of radiant energy, which extends between cladding layers, such that radiant energy entering the waveguide impinges on at least two layers of waveguide, the inlet further defining a minimum cutoff frequency for the energy to propagate in waveguide.    USE - As waveguide-based energy converter for converting radiant energy to electrical energy, used in e.g. solar power system, and digital photography.    ADVANTAGE - The device can increase the energy efficiency of a radiant energy conversion cell which is relatively inexpensive, easy to manufacture, and which does not significantly increase the surface dimensions or weight of the cell so as to adversely affect its usability. Also provides compact and efficient conversion elements to allow conversion of electrical energy to radiant energy.    DETAILED DESCRIPTION - Layered waveguide stack radiant energy converter array comprises superposed waveguides (100), each having core layer disposed with radiant energy converter, and two conductive cladding layers disposed on opposing sides of core layer, where conductive layers connected to the converter and acting as charge carriers; each waveguide having inlet for passage of radiant energy, which extends between cladding layers, such that radiant energy entering the waveguide impinges on at least two layers of waveguide, the inlet further defining a minimum cutoff frequency for the energy to propagate in waveguide; and energy combiners embedded within the stack for receiving radiant energy from at least one of the converters and for combining the incoming energy toward a normal angle to the stack surface; where each combiner has associated with at least one converter.    DESCRIPTION OF DRAWING(S) - The figure shows two-dimensional waveguide having converter formed between two bounding layers.    Waveguide (100)    Bounding layers (102, 103)    Waveguide axis (112)    Waveguide aperture (129)