Holographic LIDAR system
AssigneeEnvisics Ltd
InventorsJamieson Christmas, Dackson Masiyano, Mikael Collin
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Abstract
There is provided a lighting device arranged to produce a controllable light beam for illuminating a scene. The device comprises an addressable spatial light modulator arranged to provide a selectable phase delay distribution to a beam of incident light. The device further comprises Fourier optics arranged to receive phase-modulated light from the spatial light modulator and form a light distribution. The device further comprises projection optics arranged to project the light distribution to form a pattern of illumination as said controllable light beam.
Claims19
A method for performing a light detection and ranging (“LIDAR”) measurement on a scene, comprising:
- providing a beam of incident light;
- illuminating an addressable spatial light modulator with the beam of incident light;
- providing, using the spatial light modulator, a selectable phase delay distribution to the beam of incident light with the addressable spatial modulator to provide an exit beam, the phase delay distribution comprising a representation of a pattern of illumination in the Fourier domain;
- performing a frequency-space transformation upon the phase-modulated light of the exit beam to form an image in the spatial domain;
- and
- projecting the image in the spatial domain to form a pattern of illumination in space, the pattern of illumination in space illuminating the scene.
A light detection and ranging (“LIDAR”) system, the system comprising
- a lighting device arranged to produce a controllable light beam for illuminating a scene, the device comprising:
- a source of incident light;
- an addressable spatial light modulator arranged to provide a selectable phase delay distribution to a beam of incident light from the source, the phase delay distribution comprising a representation of a pattern of illumination in the Fourier domain;
- Fourier optics arranged to receive phase-modulated light from the spatial light modulator and perform a frequency-space transformation upon the received phase-modulated light to form a light distribution;
- projection optics arranged to project the light distribution to form the pattern of illumination as said controllable light;
- and
- a light detector arranged to detect light reflected from the controllable light beam by the scene.
Dependencies are inferred from the claim text.