Polarization multiplexed structured light emitters
AssigneeAmazon Technologies, Inc.
InventorScott Patrick Campbell
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Abstract
A system includes a housing and a light emission source positioned within the housing and including a first light emitter array characterized by a first polarization state and a second light emitter array characterized by a second polarization state. The light emitted by the light emission source is configured to propagate along an optical axis. The system also includes a lens positioned within the housing along the optical axis and a wavefront modification element positioned within the housing along the optical axis. The wavefront modification element comprises a polarization-sensitive diffractive structure.
Claims20
A system, comprising:
- a housing;
- a light emission source positioned within the housing and including a first, one-dimensional light emitter array characterized by a first polarization state and a second, two-dimensional light emitter array characterized by a second polarization state orthogonal to the first polarization state, wherein light emitted by the light emission source is configured to propagate along an optical axis;
- a lens positioned within the housing along the optical axis;
- and
- a wavefront modification element positioned within the housing along the optical axis, wherein the wavefront modification element comprises a polarization-sensitive diffractive structure.
A system, comprising:
- a housing;
- a polarized light emission source disposed in the housing and operable to emit light along an optical axis, wherein the polarized light emission source includes a plurality of light emitters, wherein a first subset of the plurality of light emitters is arrayed as a first array including a first number of light emitters arrayed in an array direction by an array dimension and characterized by a first polarization state and a second subset of the plurality of light emitters is arrayed as a second array including the first number of light emitters arrayed in the array direction by the array dimension and characterized by a second polarization state orthogonal to the first polarization state, wherein the second array is offset from the first array in the array direction by half of the array dimension;
- and
- a wavefront modification element positioned within the housing along the optical axis, wherein the wavefront modification element comprises a polarization-sensitive diffractive structure configured to generate, in a far field, a first diffraction pattern corresponding to the first subset of the plurality of light emitters and a second diffraction pattern corresponding to the second subset of the plurality of light emitters.
A system comprising:
- a housing;
- a polarized light emission source disposed in the housing and operable to emit light along an optical axis, wherein the polarized light emission source includes a plurality of light emitters, wherein a first subset of the plurality of light emitters is characterized by a first polarization state and a second subset of the plurality of light emitters is characterized by a second polarization state orthogonal to the first polarization state;
- and
- a wavefront modification element positioned within the housing along the optical axis, wherein the wavefront modification element comprises a polarization-sensitive diffractive structure configured to generate, in a far field, a first diffraction pattern corresponding to the first subset of the plurality of light emitters and having a first field of irradiation and a second diffraction pattern corresponding to the second subset of the plurality of light emitters and having a second field of irradiation different than the first field of irradiation.
Dependencies are inferred from the claim text.