公开(公告)号：US10887014B1

公开(公告)日：2021-01-05

申请号：US16379020

申请日：2019-04-09

Applicant: Facebook, Inc.

Inventor： Kevin Michael Birnbaum ,  Harvard Keese Harding, Jr. ,  Eric Douglas Miller

IPC: H04B10/112 ,  H04B10/50 ,  G02B26/08 ,  H04B10/40 ,  G02B27/28

Abstract: An optical transceiver for controlling a steering angle between a receive light beam and a transmit light beam includes an optical beam coupling device. The optical beam coupling device comprises a plurality of optical elements configured to control a steering angle between the receive light beam received by the optical beam coupling device along a first line of sight (LOS) and the transmit light beam that is output from the optical beam coupling device along a second LOS different from the first LOS, wherein both the receive light beam and the transmit light beam pass through the plurality of optical elements. The plurality of optical elements have a set of combinations for different positions of each of the optical elements, wherein each position in the set of combinations induces a different steering angle between the transmit light beam and the receive light beam.

公开(公告)号：US10594396B1

公开(公告)日：2020-03-17

申请号：US15986148

申请日：2018-05-22

Applicant: Facebook, Inc.

Inventor： Chiyun Xia ,  Harvard Keese Harding, Jr. ,  Chien-Chung Chen ,  Ferze Daligues Patawaran

IPC: H04B10/112 ,  H04B10/60 ,  G01J1/44 ,  G01J1/04 ,  G01J1/42

Abstract: The disclosed system may include (1) an optical element that receives an optical beam, (2) a wide field-of-view (FOV) quadrant photodetector that receives, from the optical element, first light originating from the optical beam, (3) a narrow FOV quadrant photodetector that receives, from the optical element, second light originating from the optical beam, and (4) a controller that controls an orientation of the optical element during at least a period of time based on a weighted combination of (a) output of the wide FOV quadrant photodetector in response to the first light, and (b) output of the narrow FOV quadrant photodetector in response to the second light. Various other systems, methods, and computer-readable media are also disclosed.

公开(公告)号：US10298325B1

公开(公告)日：2019-05-21

申请号：US15995457

申请日：2018-06-01

Applicant: Facebook, Inc.

Inventor： Kevin Michael Birnbaum ,  Harvard Keese Harding, Jr. ,  Eric Douglas Miller

IPC: G02B26/08 ,  G02B27/28 ,  H04B10/40 ,  H04B10/50 ,  H04B10/112

Abstract: An optical transceiver for controlling a steering angle between a receive light beam and a transmit light beam includes an optical beam coupling device. The optical beam coupling device comprises a plurality of optical elements configured to control a steering angle between the receive light beam received by the optical beam coupling device along a first line of sight (LOS) and the transmit light beam that is output from the optical beam coupling device along a second LOS different from the first LOS, wherein both the receive light beam and the transmit light beam pass through the plurality of optical elements. The plurality of optical elements have a set of combinations for different positions of each of the optical elements, wherein each position in the set of combinations induces a different steering angle between the transmit light beam and the receive light beam.