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US 11,442,151 B2Granted
Holographic waveguide LIDAR
AssigneeDigiLens Inc.
InventorsMilan Momcilo Popovich, Jonathan David Waldern, Alastair John Grant
Life of this patent
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Abstract
A holographic waveguide LIDAR comprises a transmitter waveguide coupled to a beam deflector and a receiver waveguide coupled to a detector module. The transmitter waveguide contains an array of grating elements for diffracting a scanned laser beam into a predefined angular ranges. The receiver waveguide contains an array of grating elements for diffracting light reflected from external points within a predefined angular range towards the detector module.
Claims20
A waveguide sensor, comprising:
- a source of first wavelength light;
- at least one beam deflector for scanning said light;
- a transmitter waveguide containing a multiplicity of transmitter grating elements disposed in at least one grating layer, each said transmitter grating element operative to diffract light into a predefined range of output directions;
- a receiver waveguide containing a multiplicity of receiver grating elements disposed in at least one grating layer, each said receiver grating element diffracting light reflected from external points and incident within a predefined angular range into a TIR path to said detector;
- and
- a detector optically coupled to said receiver waveguide,
- wherein said at least one beam deflector is optically coupled to said transmitter waveguide and configured such that scanned light coupled into said transmitter waveguide executes angular sweeps about the principal diffraction directions of said transmitter grating elements of said transmitter waveguide.
4 more elements
Dependencies are inferred from the claim text.