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Light ranging device with electronically scanned emitter array and synchronized sensor array

A photoelectric sensor and transmitter technology, applied in measurement devices, phonon exciters, microstructure devices composed of elements that move relative to each other, etc., can solve image blur, reduce the signal-to-noise ratio of sensing signals, and generate noise, etc.

Pending Publication Date: 2020-04-10
OUSTER INC
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The large amount of emitted light also causes unwanted stray light that creates noise at the receiving end, reducing the signal-to-noise ratio of the sensed signal and causing blurred images

Method used

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  • Light ranging device with electronically scanned emitter array and synchronized sensor array
  • Light ranging device with electronically scanned emitter array and synchronized sensor array
  • Light ranging device with electronically scanned emitter array and synchronized sensor array

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Embodiment approach

[0188] According to some embodiments of the present disclosure, electronic scanning LIDAR systems may be configured as solid state systems with fixed structures. This LIDAR system does not rotate, so there is no need for separate motors to rotate the sensor and transmitter modules. Examples of solid-state LIDAR systems such as Figure 18 and 19 shown.

[0189] Figure 18 and 19 is a simplified illustration of an exemplary implementation of a solid-state electronic scanning LIDAR system. specifically, Figure 18 An implementation 1800 is shown in which solid-state electronic scanning LIDAR systems 1802a-d are implemented in an external area of ​​a road vehicle 1805, such as an automobile, according to some embodiments of the present disclosure; Figure 19 An implementation 1900 is shown in which solid-state electronic scanning LIDAR systems 1902a-b are implemented on top of a road vehicle 1905 in accordance with some embodiments of the present disclosure. In each embodim...

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Abstract

Embodiments describe a solid state electronic scanning LIDAR system that includes a scanning focal plane transmitting element and a scanning focal plane receiving element whose operations are synchronized so that the firing sequence of an emitter array in the transmitting element corresponds to a capturing sequence of a photosensor array in the receiving element. During operation, the emitter array can sequentially fire one or more light emitters into a scene and the reflected light can be received by a corresponding set of one or more photosensors through an aperture layer positioned in frontof the photosensors. Each light emitter can correspond with an aperture in the aperture layer, and each aperture can correspond to a photosensor in the receiving element such that each light emittercorresponds with a specific photosensor in the receiving element.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to U.S. Provisional Patent Application No. 62 / 528,879, filed July 5, 2017, the disclosure of which is hereby incorporated by reference in its entirety and for all purposes. Background technique [0003] 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 generate 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. [0004] Some LIDAR systems include mechanical, moving parts that physica...

Claims

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Application Information

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IPC IPC(8): G01S17/08G01S17/88G01S17/931G01S7/4863G01S17/10G01S17/89
CPCG01S17/88G01S17/931G01S17/10G02B3/0056G02B3/0068G02B26/08G01S7/4815G01S7/4863G01S17/89G01S7/4817H01L25/167H01S5/183G02B26/105G02B27/30H01L27/14643H01S5/4075G01S17/08G02B26/10H01L31/02027G06V20/58G01S7/497B81B5/00
Inventor A·帕卡拉M·弗里赫特
Owner OUSTER INC
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