Lidar based 3-d imaging with far-field illumination overlap

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	Lidar based 3-d imaging with far-field illumination overlap
其他题名	Lidar based 3-d imaging with far-field illumination overlap
	HALL, DAVID S.; REKOW, MATHEW NOEL; KERSTENS, PIETER J.
	2017-08-03
专利权人	VELODYNE LIDAR, INC.
公开日期	2017-08-03
授权国家	世界知识产权组织
专利类型	发明申请
摘要	Methods and systems for performing 3-D LIDAR measurements of objects simultaneously illuminated by two or more beams of light in the far field are described herein. A 3-D LIDAR based measurement device simultaneously emits at least two beams of light into a three dimensional environment from different locations. A portion of the three dimensional environment is simultaneously illuminated by the two or more light beams at a distance of at least five meters from the LIDAR device. However, the two or more light beams do not overlap at a distance less than five meters from the LIDAR device. The beams of light are slightly divergent, having highest intensity at the device and steadily lower intensity further away. By overlapping illumination beams in the far field, but not near the LIDAR device, overall intensity is maintained at moderate levels throughout the field of view of the LIDAR device.
其他摘要	本文描述了用于对远场中的两个或更多个光束同时照射的物体进行3-D LIDAR测量的方法和系统。基于三维激光雷达的测量装置同时将来自不同位置的至少两束光发射到三维环境中。三维环境的一部分由两个或更多个光束同时照射，距离LIDAR装置至少五米。然而，两个或更多个光束在距离LIDAR装置不到5米的距离处不重叠。光束稍微发散，在装置处具有最高强度并且在更远的地方具有稳定的较低强度。通过在远场中但不在LIDAR设备附近重叠照明光束，在LIDAR设备的整个视场中整体强度保持在中等水平。
主权项	A light detection and ranging (LIDAR) device, comprising : one or more illumination sources configured to emit two or more light beams from the LIDAR device into a three dimensional environment in a plurality of different directions such that a portion of the three dimensional environment is illuminated by each of the two or more light beams, wherein a first of the two or more light beams is emitted from the LIDAR device at a first location, and a second of the two or more light beams is emitted from the LIDAR device at a second location that is spatially distinct from the first location; one or more photosensitive detectors configured to detect an amount of light reflected from a location in the three dimensional environment simultaneously illuminated by the two or more light beams; and a computing system configured to determine a time of flight of the two or more light beams emitted from the one or more illumination sources and detected by the one or more photosensitive detectors.
申请日期	2017-01-31
专利号	WO2017132704A1
专利状态	未确认
申请号	PCT/US2017/015874
公开（公告）号	WO2017132704A1
IPC 分类号	G01S17/89 \| G01C3/08 \| G01J3/02 \| G01J3/28 \| G01J3/44 \| G01S7/497 \| G01S17/06
专利代理人	SPANO, JOSEPH S.
代理机构	-
文献类型	专利
条目标识符	http://ir.opt.ac.cn/handle/181661/62566
专题	半导体激光器专利数据库
作者单位	VELODYNE LIDAR, INC.
推荐引用方式 GB/T 7714	HALL, DAVID S.,REKOW, MATHEW NOEL,KERSTENS, PIETER J.. Lidar based 3-d imaging with far-field illumination overlap. WO2017132704A1[P]. 2017-08-03.