公开(公告)号：US20240151934A1

公开(公告)日：2024-05-09

申请号：US18415819

申请日：2024-01-18

Applicant: Waymo LLC

Inventor： Blaise GASSEND ,  Ryan DAVIS ,  David DUFF

IPC: G02B7/182 ,  G01S7/481 ,  G01S17/06 ,  G02B6/26 ,  G02B26/10 ,  H01S3/081

CPC classification number: G02B7/1821 ,  G01S7/4817 ,  G01S17/06 ,  G02B6/26 ,  G02B26/105 ,  H01S3/0811

Abstract: The present disclosure relates to optical devices and systems, specifically those related to light detection and ranging (LIDAR) systems. An example device includes a shaft defining a rotational axis. The shaft includes a first material having a first coefficient of thermal expansion. The device also includes a rotatable mirror disposed about the shaft. The rotatable mirror includes a multi-sided structure having an exterior surface and an interior surface. The multi-sided structure includes a second material having a second coefficient of thermal expansion. The second coefficient of thermal expansion is different from the first coefficient of thermal expansion. The multi-sided structure also includes a plurality of reflective surfaces disposed on the exterior surface of the multi-sided structure. The multi-sided structure yet further includes one or more support members coupled to the interior surface and the shaft.

公开(公告)号：US20220413260A1

公开(公告)日：2022-12-29

申请号：US17896814

申请日：2022-08-26

Applicant: Waymo LLC

Inventor： Blaise GASSEND ,  Ryan DAVIS ,  David DUFF

IPC: G02B7/182 ,  G01S17/06 ,  H01S3/081 ,  G02B26/10 ,  G02B6/26 ,  G01S7/481

Abstract: The present disclosure relates to optical devices and systems, specifically those related to light detection and ranging (LIDAR) systems. An example device includes a shaft defining a rotational axis. The shaft includes a first material having a first coefficient of thermal expansion. The device also includes a rotatable mirror disposed about the shaft. The rotatable mirror includes a multi-sided structure having an exterior surface and an interior surface. The multi-sided structure includes a second material having a second coefficient of thermal expansion. The second coefficient of thermal expansion is different from the first coefficient of thermal expansion. The multi-sided structure also includes a plurality of reflective surfaces disposed on the exterior surface of the multi-sided structure. The multi-sided structure yet further includes one or more support members coupled to the interior surface and the shaft.