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1. (WO2018031165) SYSTEM AND METHOD FOR MEASURING REFERENCE AND RETURNED LIGHT BEAMS IN AN OPTICAL SYSTEM

Pub. No.:    WO/2018/031165    International Application No.:    PCT/US2017/041578
Publication Date: Fri Feb 16 00:59:59 CET 2018 International Filing Date: Wed Jul 12 01:59:59 CEST 2017
IPC: G01S 7/481
G01S 7/486
G01S 17/42
Applicants: QUALCOMM INCORPORATED
Inventors: JAROSINSKI, Tadeusz
SLOBODYANYUK, Volodimir
WYRWAS, John
RAINA, Manav
MCLAREN, Elbert
Title: SYSTEM AND METHOD FOR MEASURING REFERENCE AND RETURNED LIGHT BEAMS IN AN OPTICAL SYSTEM
Abstract:
Disclosed herein are techniques for measuring a reference beam and a corresponding returned beam from a target in a measurement system using a single sensor array. The system is configured such that the location of the reference beam is space apart from the location of the returned beam on the sensor array. A first set of sensor elements on the sensor array corresponding to the reference beam is dynamically activated based on a laser beam scanning control signal. The detection signal from the first set of sensor elements is used to determine a location and/or a pattern of the reference beam, which are then used to estimate a location and/or a pattern of the corresponding returned beam on the same sensor array and dynamically select and activate a second set of sensor elements on the sensor array based on the estimated location and/or pattern of the corresponding returned beam.