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Synchronized image capturing for electronic scanning lidar systems

A technology of electronic scanning and image light, which is applied in the parts of TV systems, radio wave measurement systems, image communication, etc., can solve the problem of uncomplicated manufacturing of flash LIDAR systems

Pending Publication Date: 2022-02-25
OUSTER INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Flash LIDAR systems are less complex to manufacture due to the lack of moving parts; however, since all emitters are activated at once, they can require a significant amount of power to operate, and they can require a significant amount of processing power to process detections from all pixels at once device signal

Method used

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  • Synchronized image capturing for electronic scanning lidar systems
  • Synchronized image capturing for electronic scanning lidar systems
  • Synchronized image capturing for electronic scanning lidar systems

Examples

Experimental program
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Embodiment Construction

[0029] Some embodiments of the present disclosure relate to stationary solid-state LIDAR systems in which no spinning columns are present. Embodiments may not only emit narrowband light into a field outside the LIDAR system and capture the emitted narrowband light for time-of-flight measurements after it reflects off objects in the field, but may also sense the ambient visible light of the field. Embodiments may then use the captured emitted light to create a three-dimensional representation of the field, and use the captured ambient visible light to create a high-resolution two-dimensional image of the field. The 3D representation of the field can then be matched to the 2D image of the scene, improving the situational awareness of solid-state LIDAR systems.

[0030] A solid-state array electronic scanning LIDAR system according to some embodiments of the present disclosure may include a light transmission module and a light sensing module. The light transmission module may i...

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PUM

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Abstract

Embodiments describe an electronically scanning optical system including an emitter array configured to emit light into a field, a time of flight (TOF) sensor array configured to detect emitted light reflected back from the field, an image sensor array configured to detect ambient light in the field, where a field of view of the emitter array corresponds to a field of view of the TOF sensor array and at least a subset of a field of view of the image sensor array. The optical system further including an emitter controller configured to activate a subset of the plurality of light emitters at a time, a TOF sensor controller configured to synchronize the readout of individual TOF photosensors concurrently with the firing of corresponding light emitters, and an image sensor controller configured to capture an image that is presentative of the field during the emission cycle.

Description

Background technique [0001] Light imaging, detection and ranging (LIDAR) systems measure the distance to a target by illuminating the target with a pulsed laser light and measuring the reflected pulses with a sensor. The time-of-flight measurements can then be used to make a digital 3D representation of the target. LIDAR systems can be used in a variety of applications that require the use of 3D depth images, including archaeology, geography, geology, forestry, mapping, construction, medical imaging, and military applications, among others. Autonomous vehicles can also use LIDAR for obstacle detection and avoidance and vehicle navigation. [0002] Some LIDAR systems include mechanical, moving parts that physically scan the transmitting and receiving elements at a rotational angle of less than or equal to 360° to capture images of the scene in the field. One example of such a system that can be used for obstacle detection and avoidance in vehicles is commonly referred to as a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S17/86G01S17/894G01S17/42G01S17/89G01S7/4865G01S7/481
CPCG01S17/86G01S17/42G01S17/931G01S7/4815G01S7/4816G01S17/87G01S17/894G01S7/484G01S7/4863G01S7/4817G01S17/89H04N25/44H03K3/42
Inventor A·帕卡拉
Owner OUSTER INC