Light-emitting apparatus using metasurfaces and light-emitting method thereof
Assignee10644137 Canada Inc.
InventorsHamid Pahlevaninezhad, Aria Moaven, Majid Pahlevaninezhad, Sam Scherwitz
Life of this patent
Estimating the term…
Abstract
A light-emitting apparatus for facilitating the growth of one or more plants. The apparatus has a light-emitting layer comprising one or more light-emitting diodes for emitting light, and at least one optical-transformation layer having one or more optical-transformation units. Each optical-transformation unit has a metasurface for adjusting one or more parameters of the light emitted from the light-emitting layer. In some embodiments, the light-emitting apparatus may further have a polarization-control layer sandwiched between the light-emitting layer and the optical-transformation layer.
Claims9
A light-emitting apparatus comprising:
- a light-emitting layer for emitting light;
- and
- an optical-transformation layer coupled to the light-emitting layer, the optical-transformation layer comprising one or more optical-transformation units, each optical-transformation unit comprising a metasurface for adjusting one or more parameters of the light emitted from the light-emitting layer,
- wherein the light-emitting layer comprises one or more light-emitting units;
- wherein the optical-transformation layer comprises a housing comprising one or more receptacles for receiving the one or more metasurfaces;
- and
- wherein the one or more receptacles are at locations corresponding to those of the one or more light-emitting units for aligning the one or more metasurfaces with the one or more light-emitting units.
A light-emitting apparatus comprising:
- a light-emitting layer for emitting light towards a source field of view (FOV);
- and
- at least one metasurface layer in front of the light-emitting layer for directing the light emitted from the light-emitting layer towards a first FOV having an angular span smaller than that of the source FOV;
- and
- a polarization-control layer sandwiched between the light-emitting layer and the at least one optical-transformation layer;
- wherein the polarization-control layer is configured for, in response to a control signal, polarizing the light emitted from the light-emitting layer to a first polarization state or to a second polarization state;
- and
- wherein the at least one optical-transformation layer is configured for directing the light from the polarization-control layer in the first polarization state towards a first FOV having an angular span smaller than that of the source FOV, and directing the light from the polarization-control layer in the second polarization state towards a second FOV having an angular span greater than that of the first FOV.
A light-emitting apparatus comprising:
- a light-emitting layer for emitting light;
- and
- at least one metasurface layer in front of the light-emitting layer for directing the light emitted from the light-emitting layer in a first polarization state towards a first FOV and directing the light emitted from the light-emitting layer in a second polarization state towards a second FOV;
- wherein the first and second FOVs are overlapped and laterally offset from each other for forming a three-dimensional (3D) perception to a user wearing a pair of glasses with lenses of different polarization states.
A light-emitting apparatus comprising:
- a light-emitting layer for emitting light;
- and
- at least one metasurface layer in front of the light-emitting layer for directing the light emitted from the light-emitting layer in a first polarization state towards a first FOV and directing the light emitted from the light-emitting layer in a second polarization state towards a second FOV;
- wherein the first and second FOVs are laterally offset from each other such that the first FOV is only viewable to a first eye of a user at a predefined distance and the second FOV is only viewable to a second eye of the user at the predefined distance, for forming a 3D perception to the user.
Dependencies are inferred from the claim text.