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1. (WO2018200423) TRACKING OPTICAL FLOW OF BACKSCATTERED LASER SPECKLE PATTERNS

Pub. No.:    WO/2018/200423    International Application No.:    PCT/US2018/028964
Publication Date: Fri Nov 02 00:59:59 CET 2018 International Filing Date: Tue Apr 24 01:59:59 CEST 2018
IPC: G02B 6/00
G02B 26/00
G02B 26/08
G02B 26/10
G02B 27/01
Applicants: MAGIC LEAP, INC.
Inventors: SINAY, Asif
FREEDMAN, Barak
Title: TRACKING OPTICAL FLOW OF BACKSCATTERED LASER SPECKLE PATTERNS
Abstract:
Augmented reality headgear includes transparent displays that allow a user to simultaneously view the real world and virtual content positioned in the real world and further includes at least one source of coherent light and at least one sensor array for sensing, at a series of times, speckle patterns produced when the coherent light impinges environment surfaces. Circuitry is provided for sensing shifts in the speckle pattern and determining motion which caused the shift of the speckle pattern and adjusting the display of virtual objects displayed by the augmented reality headgear to compensate for the motion.