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Scanning lidar and method of producing the same

A scanning laser and lidar technology, applied in the direction of lasers, semiconductor lasers, phonon exciters, etc., can solve problems such as concurrent field of view and distance limitations

Active Publication Date: 2017-02-15
HRL LAB
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since it works in flash mode, the main disadvantage of this lidar is the limitation of concurrent field of view and distance

Method used

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  • Scanning lidar and method of producing the same
  • Scanning lidar and method of producing the same
  • Scanning lidar and method of producing the same

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Embodiment Construction

[0019] In the following description, numerous specific details are used to clearly describe the various specific embodiments disclosed herein. However, it will be understood by those skilled in the art that the present invention may be practiced without the specific details discussed below. In other instances, well-known features have not been described in order to avoid obscuring the invention.

[0020] Figure 1A A 3D heterogeneously integrated chip-scale scanning lidar transceiver 10 according to the present disclosure is shown. The lidar transceiver 10 has a single-mode laser diode 12 that operates in the ultraviolet, visible, near-infrared, mid-infrared, and long-wave infrared (LWIR) spectral regions, and has an optional The front facet and rear facet are coupled to the waveguide structures 14 and 16 of the laser diode 12 . The waveguide structures 14 and 16 are transparent at the emission wavelength of the laser diode 12 . Waveguide grating outcoupler structures 18 an...

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Abstract

A chip-scale scanning lidar includes a two dimensional (2D) scanning micromirror for a transmit beam and a 2D scanning micromirror for a receive beam, a laser diode and a photodetector, a first waveguide and first grating outcoupler coupled to a front facet of the laser diode, a second waveguide and a second grating outcoupler coupled to a rear facet of the laser diode on a substrate. A first fixed micromirror, a second micromirror, a third micromirror, and a focusing component are in a dielectric layer bonded to the substrate over the laser diode and photodetector. The photodetector is optically coupled to the second fixed micromirror and the third fixed micromirror for coherent detection.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS [0002] This application relates to and claims priority to and the benefit of US Patent Application Serial No. 14 / 317,695, filed June 27, 2014, the entire contents of which are incorporated herein by reference. [0003] This application relates to and claims priority to and the benefit of US Patent Application Serial No. 14 / 317,753, filed June 27, 2014, the entire contents of which are incorporated herein by reference. [0004] Statement Regarding Federal Funding [0005] none technical field [0006] The present disclosure relates to light detection and ranging (lidar), particularly scanning lidar. A specific example relates to a single-chip scanning lidar and a method of manufacturing the same. Background technique [0007] A variety of commercially available lidar systems are primarily geared towards automotive applications. Velodyne Lidar has introduced a pulsed lidar, the Velodyne-64E, with multi-row emitting laser / det...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/481G01S17/66G01S17/02G01S17/34G01S17/89H01S5/12
CPCG01S17/89G01S7/4808G01S7/4817G01S17/34H01S5/12G01S17/02H01S5/021H01S5/0215H01S5/0262
Inventor K·塞严帕米拉·R·帕特森奥列格·M·埃菲莫夫
Owner HRL LAB