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US 11,686,821 B2Granted
Scan patterns for lidar systems
AssigneeLuminar, LLC
InventorsScott R. Campbell, Rodger W. Cleye, Jason M. Eichenholz, Lane A. Martin, Matthew D. Weed
Life of this patent
Estimating the term…
Abstract
A system includes a first lidar sensor and a second lidar sensor, where each lidar sensor includes a scanner configured to direct a set of pulses of light along a scan pattern and a receiver configured to detect scattered light from the set of light pulses. The scan patterns are at least partially overlapped in an overlap region. The system further includes an enclosure, where the first lidar sensor and the second lidar sensor are contained within the enclosure. Each scanner includes one or more mirrors, and each mirror is driven by a scan mechanism.
Claims13
A system comprising:
- a light source configured to produce a first set of pulses of light having a first wavelength and a second set of pulses of light having a second wavelength different from the first wavelength;
- a first lidar sensor comprising:
- a first scanner configured to scan the first set of pulses of light along a first scan pattern;
- and
- a first receiver configured to detect scattered light from the first set of pulses of light, wherein the first receiver comprises a first optical filter configured to transmit light at the first wavelength and block light at the second wavelength;
- a second lidar sensor comprising:
- a second scanner configured to scan the second set of pulses of light along a second scan pattern, wherein the first scan pattern and the second scan pattern are at least partially overlapped in an overlap region;
- and
- a second receiver configured to detect scattered light from the second set of pulses of light, wherein the second receiver comprises a second optical filter configured to transmit light at the second wavelength and block light at the first wavelength;
- an enclosure, wherein the first lidar sensor and the second lidar sensor are contained within the enclosure, wherein the enclosure comprises a window configured to transmit the first set of pulses of light and the second set of pulses of light, wherein the window comprises a surface with a dielectric coating that is anti-reflecting at the first and second wavelengths;
- and
- wherein the first scanner and the second scanner include one or more of a galvanometer scanner, a resonant scanner, a microelectromechanical systems (MEMS) device, a polygonal scanner, or a voice coil motor.
9 more elements
A vehicle comprising:
- a sensor system comprising:
- a light source configured to produce a first set of pulses of light having a first wavelength and a second set of pulses of light having a second wavelength different from the first wavelength;
- a first lidar sensor comprising:
- a first scanner configured to scan the first set of pulses of light along a first scan pattern;
- and
- a first receiver configured to detect scattered light from the first set of pulses of light to capture a first set of pixels, wherein the first receiver comprises a first optical filter configured to transmit light at the first wavelength and block light at the second wavelength;
- a second lidar sensor comprising:
- a second scanner configured to scan the second set of pulses of light along a second scan pattern, wherein the first scan pattern and the second scan pattern are at least partially overlapped in an overlap region;
- and
- a second receiver configured to detect scattered light from the second set of pulses of light to capture a second set of pixels, wherein the second receiver comprises a second optical filter configured to transmit light at the second wavelength and block light at the first wavelength;
- an enclosure, wherein the first lidar sensor and the second lidar sensor are contained within the enclosure, wherein the enclosure comprises a window configured to transmit the first set of pulses of light and the second set of pulses of light, wherein the window comprises a surface with a dielectric coating that is anti-reflecting at the first and second wavelengths;
- and
- wherein the first scanner and the second scanner include one or more of a galvanometer scanner, a resonant scanner, a microelectromechanical systems (MEMS) device, a polygonal scanner, or a voice coil motor;
- and
- a controller configured to sense or identify a target using at least the first set of pixels and the second set of pixels.
12 more elements
Dependencies are inferred from the claim text.