Invention Grant
- Patent Title: Systems and methods for weighted combination of quadrant photodetector output for beam tracking
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Application No.: US15986148Application Date: 2018-05-22
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Publication No.: US10594396B1Publication Date: 2020-03-17
- Inventor: Chiyun Xia , Harvard Keese Harding, Jr. , Chien-Chung Chen , Ferze Daligues Patawaran
- Applicant: Facebook, Inc.
- Applicant Address: US CA Menlo Park
- Assignee: Facebook, Inc.
- Current Assignee: Facebook, Inc.
- Current Assignee Address: US CA Menlo Park
- Agency: FisherBroyles, LLP
- Main IPC: H04B10/112
- 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.
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