公开(公告)号：US20200067390A1

公开(公告)日：2020-02-27

申请号：US16665822

申请日：2019-10-28

Applicant: SZ DJI TECHNOLOGY CO., LTD.

Inventor： Zheyang Li ,  Huai Huang ,  Jin Zhao ,  Xiaoping Hong ,  Peng Wang

IPC: H02K16/02 ,  G02B26/10 ,  G02B7/18

Abstract: A driving device includes two rotor assemblies, a stator assembly, and a positioning assembly. Each rotor assembly includes a rotation axis and a rotor. The rotor includes a hollow chamber. The two rotor assemblies include a first rotor assembly and a second rotor assembly, a rotation axis of the first rotor assembly is parallel with a rotation axis of the second rotor assembly, a rotor of the first rotor assembly is at least partially embedded in a chamber of a rotor of the second rotor assembly. The stator assembly is surroundingly disposed at an outer side of the two rotor assemblies and drives a rotor. The rotor driven by the stator assembly causes another rotor of one of the first rotor assembly and the second rotor assembly to rotate. The positioning assembly is located outside of the rotors, and limits the rotors to rotate around corresponding fixed rotation axes.

公开(公告)号：US11221212B2

公开(公告)日：2022-01-11

申请号：US16587495

申请日：2019-09-30

Applicant: SZ DJI TECHNOLOGY CO., LTD.

Inventor： Huai Huang ,  Wei Ren ,  Peng Wang

IPC: G01B11/26 ,  B23K26/03 ,  B23K26/00

Abstract: A laser-based measurement device includes a motor comprising a hollow shaft. The laser-based measurement device also includes a laser transmitter disposed in the hollow shaft. The laser-based measurement device also includes an optical device disposed at the motor. The motor is configured to drive the optical device to rotate. The optical device is configured to guide a laser beam transmitted by the laser transmitter out of the hollow shaft, or to guide the laser beam reflected by an external environment into the hollow shaft.