公开(公告)号：US20240159885A1

公开(公告)日：2024-05-16

申请号：US18417904

申请日：2024-01-19

申请人： Waymo LLC

发明人： James Dunphy ,  David Schleuning ,  Ralph Shepard

IPC分类号： G01S7/497 ,  G02B26/08

CPC分类号： G01S7/497 ,  G02B26/0833

摘要： The present disclosure relates to multi-channel optical transmitter modules, lidar systems, and methods that involve micromirror devices. An example optical transmitter module includes at least one light-emitter device and a plurality of micromirror devices optically-coupled to the at least one light-emitter device. The at least one light-emitter device is configured to emit respective light beams toward an environment via the micromirror devices. The micromirror devices are configured to deflect the light beams. The optical transmitter module also includes a controller having at least one processor and a memory. The controller is configured to carry out operations. The operations include receiving information indicative of a retroreflector object in the environment. The operations include, based on the received information, causing at least one micromirror device of the plurality of micromirror devices to deflect at least one light beam so the at least one light beam does not interact with the retroreflector object.

公开(公告)号：US20230099679A1

公开(公告)日：2023-03-30

申请号：US18053255

申请日：2022-11-07

申请人： Waymo LLC

发明人： James Dunphy ,  David Hutchison

IPC分类号： G03F7/20 ,  G02B6/42

摘要： The present disclosure relates to systems and methods relating to the fabrication of light guide elements. An example system includes an optical component configured to direct light emitted by a light source to illuminate a photoresist material at one or more desired angles so as to expose an angled structure in the photoresist material. The photoresist material overlays at least a portion of a first surface of a substrate. The optical component includes a container containing a light-coupling material that is selected based in part on the one or more desired angles. The system also includes a reflective surface arranged to reflect at least a first portion of the emitted light to illuminate the photoresist material at the one or more desired angles.

公开(公告)号：US20210405536A1

公开(公告)日：2021-12-30

申请号：US17474779

申请日：2021-09-14

申请人： Waymo LLC

发明人： James Dunphy ,  David Hutchison

IPC分类号： G03F7/20 ,  G02B6/42

摘要： The present disclosure relates to systems and methods relating to the fabrication of light guide elements. An example system includes an optical component configured to direct light emitted by a light source to illuminate a photoresist material at one or more desired angles so as to expose an angled structure in the photoresist material. The photoresist material overlays at least a portion of a first surface of a substrate. The optical component includes a container containing a light-coupling material that is selected based in part on the one or more desired angles. The system also includes a reflective surface arranged to reflect at least a first portion of the emitted light to illuminate the photoresist material at the one or more desired angles.

公开(公告)号：US20210349185A1

公开(公告)日：2021-11-11

申请号：US17061003

申请日：2020-10-01

申请人： Waymo LLC

发明人： David Schleuning ,  Pierre-Yves Droz ,  Jason Watson ,  James Dunphy

IPC分类号： G01S7/487 ,  G01S7/481 ,  G01S7/4863

摘要： Example embodiments relate to crosstalk reduction for light detection and ranging (lidar) devices using wavelength locking. An example embodiment includes a lidar device. The lidar device includes a first light emitter configured to emit a first light signal and a second light emitter configured to emit a second light signal. The lidar device also includes a first light guide and a second light guide. In addition, the lidar device includes a first light detector and a second light detector. Further, the lidar device includes a first wavelength-locking mechanism configured to use a portion of the first light signal to maintain a wavelength of the first light signal and a second wavelength-locking mechanism configured to use a portion of the second light signal to maintain a wavelength of the second light signal. The wavelengths of the first light signal and the second light signal are different.