Light-emitting device with diffractive structures and a synthetic hologram
AssigneeCommissariat A L'energie Atomique Et Aux Ene Alt
InventorChristophe MARTINEZ
Life of this patent
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Abstract
A light-emitting device comprising at least: a metal layer able to be heated and to propagate surface waves consecutive to the heating of the metal layer, with the metal layer being structured such that it comprises several diffraction patterns able to carry out a diffraction of the surface waves to free-space propagation modes, and wherein a synthetic hologram is encoded such that a phase image of each pixel of the hologram is encoded by an offset in the position of one of the diffraction patterns; a heater of the metal layer.
Claims17
A light-emitting device comprising at least:
- a metal layer able to be heated and to propagate surface waves consecutive to the heating of the metal layer, the metal layer being structured such that it comprises several diffraction patterns able to carry out a diffraction of the surface waves to free-space propagation modes, and wherein a synthetic hologram able to control the form of a light radiation intended to be emitted by the light-emitting device via controlling the wavefront intended to be emitted is coded such that the synthetic hologram corresponds to a phase image coded in each pixel by an offset of the position of one of the diffraction patterns in relation to a reference position of said one of the diffraction patterns;
- a heater of the metal layer.
A photovoltaic device comprising at least one light-emitting device, wherein the light-emitting device comprises at least:
- a metal layer able to be heated and to propagate surface waves consecutive to the heating of the metal layer, the metal layer being structured such that it comprises several diffraction patterns able to carry out a diffraction of the surface waves to free-space propagation modes, and wherein a synthetic hologram able to control the form of a light radiation intended to be emitted by the light-emitting device via controlling the wavefront intended to be emitted is coded such that the synthetic hologram corresponds to a phase image coded in each pixel by an offset of the position of one of the diffraction patterns in relation to a reference position of said one of the diffraction patterns;
- and wherein the metal layer of the light-emitting device is able to receive light rays received by the photovoltaic device, and further comprising at least one photovoltaic conversion element able to receive an image of the hologram intended to be emitted by the light-emitting device.
Dependencies are inferred from the claim text.