公开(公告)号：US20190331490A1

公开(公告)日：2019-10-31

申请号：US16203718

申请日：2018-11-29

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Yifei ZHANG ,  Tailiang LI ,  Ying ZHANG ,  Kai ZHAO

IPC: G01C15/02 ,  G01C3/06 ,  G06F3/01

Abstract: The present disclosure provides a distance measuring device, a distance measuring system and a distance measuring method. The distance measuring device includes a finger sleeve assembly and a communication component. The finger sleeve assembly includes a first interphalangeal joint and a second interphalangeal joint that is rotatable connected to the first interphalangeal joint. The communication component is disposed on the finger sleeve assembly and is configured to transmit and/or receive a ranging signal.

公开(公告)号：US20190025689A1

公开(公告)日：2019-01-24

申请号：US15993994

申请日：2018-05-31

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Hongtao GUAN ,  Wenchu DONG ,  Junwei YAN ,  Ying ZHANG ,  Tailiang LI

IPC: G03B21/53

Abstract: The disclosure provides a focusing method of optical machine of projector, a focusing device and an optical machine. The focusing method comprises steps of: detecting deformation amount of lens of an optical machine; and controlling and adjusting a focal length of the lens of the optical machine according to the deformation amount of the lens of the optical machine. In the he focusing method, by detecting the deformation amount of the lens of the optical machine in real time and controlling to adjust the focal length of the lens of the optical machine in real time according to the deformation amount of the lens of the optical machine, the adjustment precision of the focal length of the lens of the optical machine can be greatly improved.