公开(公告)号：US20180314416A1

公开(公告)日：2018-11-01

申请号：US15965696

申请日：2018-04-27

Applicant: Magic Leap, Inc.

Inventor： James M. Powderly ,  Savannah Niles ,  Christopher David Nesladek ,  Isioma Osagbemwenorue Azu ,  Marshal Ainsworth Fontaine ,  Haney Awad ,  William Wheeler ,  Brian David Schwab ,  Brian Bucknor

IPC: G06F3/0488 ,  G06F3/041 ,  G09G3/32

Abstract: A light emitting user input device can include a touch sensitive portion configured to accept user input (e.g., from a user's thumb) and a light emitting portion configured to output a light pattern. The light pattern can be used to assist the user in interacting with the user input device. Examples include emulating a multi-degree-of-freedom controller, indicating scrolling or swiping actions, indicating presence of objects nearby the device, indicating receipt of notifications, assisting pairing the user input device with another device, or assisting calibrating the user input device. The light emitting user input device can be used to provide user input to a wearable device, such as, e.g., a head mounted display device.

公开(公告)号：US20170307891A1

公开(公告)日：2017-10-26

申请号：US15495597

申请日：2017-04-24

Applicant: Magic Leap, Inc.

Inventor： Brian Bucknor ,  Christopher Lopez ,  Michael Janusz Woods ,  Aly H. M. Aly ,  James William Palmer ,  Evan Francis Rynk

IPC: G02B27/01 ,  G06F3/16 ,  G06T19/00 ,  G01S1/70

CPC classification number: G01S1/70 ,  G02B27/0093 ,  G02B27/017 ,  G02B27/0179 ,  G02B2027/0138 ,  G02B2027/0178 ,  G02B2027/0187 ,  G06F3/165 ,  H01H9/0228 ,  H01H9/0235

Abstract: Head-mounted augmented reality (AR) devices can track pose of a wearer's head to provide a three-dimensional virtual representation of objects in the wearer's environment. An electromagnetic (EM) tracking system can track head or body pose. A handheld user input device can include an EM emitter that generates an EM field, and the head-mounted AR device can include an EM sensor that senses the EM field. EM information from the sensor can be analyzed to determine location and/or orientation of the sensor and thereby the wearer's pose. The EM emitter and sensor may utilize time division multiplexing (TDM) or dynamic frequency tuning to operate at multiple frequencies. Voltage gain control may be implemented in the transmitter, rather than the sensor, allowing smaller and lighter weight sensor designs. The EM sensor can implement noise cancellation to reduce the level of EM interference generated by nearby audio speakers.