公开(公告)号：US20220269070A1

公开(公告)日：2022-08-25

申请号：US17220627

申请日：2021-04-01

Applicant: GOOGLE LLC

Inventor： Sangtak Park ,  Matthew Wakelin ,  Jordan Van Wyk

IPC: G02B26/08 ,  B81B3/00

Abstract: A system includes an optical reflector to reflect the light, the optical reflector having a rotor, a first stator, and a second stator. The system further includes a controller in communication with the optical reflector. The controller is to drive the optical reflector by applying a first actuation voltage to the first stator, and a second actuation voltage to the second stator. Further, the controller is to apply an excitation voltage to the first stator. Furthermore, the controller is to determine a relationship between a first capacitance between the rotor and the first stator, and a second capacitance between the rotor and the second stator. Based on the relationship, the controller is to determine a position attribute of the optical reflector.

公开(公告)号：US12072485B2

公开(公告)日：2024-08-27

申请号：US17220627

申请日：2021-04-01

Applicant: GOOGLE LLC

Inventor： Sangtak Park ,  Matthew Wakelin ,  Jordan Van Wyk

IPC: G02B26/08 ,  B81B3/00

CPC classification number: G02B26/0841 ,  B81B3/0083 ,  B81B2201/047

Abstract: A system includes an optical reflector to reflect the light, the optical reflector having a rotor, a first stator, and a second stator. The system further includes a controller in communication with the optical reflector. The controller is to drive the optical reflector by applying a first actuation voltage to the first stator, and a second actuation voltage to the second stator. Further, the controller is to apply an excitation voltage to the first stator. Furthermore, the controller is to determine a relationship between a first capacitance between the rotor and the first stator, and a second capacitance between the rotor and the second stator. Based on the relationship, the controller is to determine a position attribute of the optical reflector.