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US 11,686,824 B2Granted
LiDAR systems that use a multi-facet mirror
AssigneeInnovusion, Inc.
InventorsMicah Ledbetter, Junwei Bao, Rui Zhang, Yimin Li
Life of this patent
Estimating the term…
Abstract
Embodiments discussed herein refer to using LiDAR systems that uses a rotating polygon with a multi-facet mirror. Such multi-facet galvanometer mirror arrangements generate a point map that has reduced curvature.
Claims24
A light detection and ranging (LiDAR) system, comprising:
- a beam steering system comprising:
- a polygon comprising a plurality of facets and configured to rotate around a first rotational axis;
- and
- a multi-facet mirror configured to rotate about a second rotational axis, wherein the multi-facet mirror comprises a plurality of facets connected together directly or via one or more joint members, and wherein planar surfaces of the plurality of facets form respective skew angles with respect to the second rotational axis, at least one of the skew angles being a non-zero skew angle;
- a laser system configured to emit light pulses that are steered by the beam steering system within a field of view (FOV) of the LiDAR system;
- and
- a receiver system configured to process return pulses corresponding to the emitted light pulses to generate a point map of the FOV.
4 more elements
A light detection and ranging (LiDAR) system, comprising
- a beam steering system comprising:
- a polygon system comprising a polygon configured to rotate around a first rotational axis;
- and
- a multi-facet mirror system comprising:
- a mirror rotation mechanism;
- and
- a multi-facet galvanometer mirror (MFGM) configured to rotate about a second rotational axis under the control of the mirror rotation mechanism, wherein the MFGM comprises a plurality of facets, the plurality of facets being connected together directly or via one or more joint members, and wherein planar surfaces of the plurality of facets form respective skew angles with respect to the second rotational axis, at least one of the skew angles being a non-zero skew angle;
- a laser system configured to emit a plurality of light beams that are steered by the beam steering system within a field of view (FOV) the LiDAR system;
- a receiver system configured to process return pulses corresponding to the emitted light pulses to generate a point map of the FOV;
- and
- a controller configured to control the laser system and the mirror rotation mechanism.
8 more elements
A light detection and ranging (LiDAR) system, comprising:
- a beam steering system comprising:
- a motor;
- a polygon comprising a plurality of facets and configured to rotate around a first rotational axis;
- and
- a multi-facet mirror comprising at least two facets connected together via a joint member,
- wherein the motor is configured to oscillate a first facet of the at least two facets about a second rotational axis, and wherein the joint member is configured to oscillate a second facet of the at least two facets about a third rotational axis in conjunction with operation of the motor;
- a laser system configured to emit light pulses that are steered by the beam steering system within a field of view (FOV) the LiDAR system;
- and
- a receiver system configured to process return pulses corresponding to the emitted light pulses to generate a point map of the FOV.
6 more elements
Dependencies are inferred from the claim text.