Light-emitting device with diffractive structures and a synthetic hologram
AssigneeCommissariat A L'energie Atomique Et Aux Energies Alternatives
InventorChristophe Martinez
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Abstract
A light-emitting device including 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, wherein a synthetic hologram is encoded such that a phase image of a pixel of the hologram is encoded by an offset in the position of one of the diffraction patterns, and a heater of the metal layer.
Claims17
A light-emitting device comprising:
- 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 the metal layer comprises several diffraction patterns able to carry out a diffraction of the surface waves to free-space propagation modes, 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, includes a plurality of pixels and is coded such that the synthetic hologram corresponds to a phase image coded in each of said plurality of pixels 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
- a heater of the metal layer.
A photovoltaic device comprising:
- at least one light-emitting device,
- wherein the light-emitting device comprises:
- 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, 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, includes a plurality of pixels and is coded such that the synthetic hologram corresponds to a phase image coded in each of said plurality of pixels 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;
- wherein the metal layer of the light-emitting device is able to receive light rays received by the photovoltaic device, and
- wherein the photovoltaic device further comprises:
- 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.