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US 10,591,923 B2Granted
Method and apparatus for parallel illumination by a VCSEL array
AssigneeGM Global Technology Operations LLC
InventorsAriel Lipson, Michael Slutsky, Itai Afek
Life of this patent
Estimating the term…
Abstract
The present application generally relates communications and hazard avoidance within a monitored driving environment. More specifically, the application teaches a system for improved target object detection in a vehicle equipped with a laser detection and ranging LIDAR system by simultaneously transmitting multiple lasers in an array and resolving angular ambiguities using angle sensitive detection techniques.
Claims10
A LIDAR system comprising:
- a laser emitting device for emitting a laser in a first direction;
- a detector having a first detection portion for detecting a first laser intensity, a second detection portion for detecting a second laser intensity and a third detection portion for detecting a third laser intensity;
- a lens for distributing a laser reflection at a junction of the first detection portion and the second detection portion;
- and
- a processor for determining an angle of incidence of the laser reflection at the detector in response to a ratio of the first laser intensity and the second laser intensity, wherein the processor can further determine an elevation of incidence at the detector by determining a ratio of the first laser intensity and the third laser intensity.
2 more elements
A LiDAR system comprising:
- a transmitter for transmitting a light pulse;
- a first lens for altering the direction of the light pulse;
- a detector having a first detection region, a second detection region, and a third detection region for detecting a reflection of the light pulse;
- a second lens for defocusing the light pulse such that the light pulse is distributed over a portion of the first detection region and a portion of the second detection region;
- and
- a processor for determining an angle of incidence of the reflection of the light pulse at the detector in response to a first intensity of the reflection of light pulse incident on the first detection region and a second intensity of the reflection of the light pulse incident on the second detection region and wherein the processor is further operative determine an elevation of incidence at the detector by determining a ratio of the first intensity and the third intensity.
3 more elements
Dependencies are inferred from the claim text.