Positional tracking systems and methods
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United States of America Patent
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Jul 2, 2019
Grant Date -
May 12, 2016
app pub date -
Nov 10, 2015
filing date -
Nov 10, 2014
priority date (Note) -
In Force
status (Latency Note)
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Abstract
Optical positional tracking systems that may be used in virtual reality (VR)/augmented reality (AR) applications are described. Exemplary implementations comprise one or more receivers and one or more transmitters. Exemplary transmitters contains two orthogonal rotors that each emit a fan-shaped laser beam. Each beam is swept as the rotors are spun at constant speed. Exemplary optical receivers can be relatively small, and mounted at convenient locations on the VR display. These receivers consist of small optical detectors that may be mounted on head-mounted VR displays. Exemplary systems determine position by measuring the time at which each swept beam crosses each receiver/detector.
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