公开(公告)号：US20200091740A1

公开(公告)日：2020-03-19

申请号：US16573483

申请日：2019-09-17

Applicant: North Inc.

Inventor： Philip Michael Isaacs ,  Kai Xu ,  David Vandervies

IPC: H02J7/00 ,  H02M3/155 ,  H03K5/24

Abstract: A portable charger system provides two charger ports with different charging characteristics. Two devices having different charging characteristics may be coupled to the two charger ports to be charged simultaneously.

公开(公告)号：US20190196228A1

公开(公告)日：2019-06-27

申请号：US16231275

申请日：2018-12-21

Applicant: NORTH INC.

Inventor： Joshua Moore ,  Kai Xu ,  George Shaker

IPC: G02C11/00 ,  G02C5/14 ,  H01Q1/27 ,  G02B27/01

CPC classification number: H01Q1/273 ,  G02C5/14 ,  G02C11/10

Abstract: The present disclosure relates to systems, devices and methods for eyeglasses frames and eyeglasses frames assemblies for wearable electronic devices, and particularly relates to systems, devices, and methods that employ an antenna in eyeglasses frames and eyeglasses frames assemblies for wearable heads-up displays. In an embodiment, a pair of eyeglasses includes a first arm housing a radio and an antenna passing internally from the radio to at least a portion of a front eyeglass frame, which includes a first and second rim securely physically coupled by a bridge. A power source is coupled to the first arm or a second arm and electrically coupled to the radio via an electrically conductive path.

公开(公告)号：US10444610B2

公开(公告)日：2019-10-15

申请号：US16047859

申请日：2018-07-27

Applicant: North Inc.

Inventor： Kai Xu

IPC: G02B27/01 ,  G03B21/00 ,  G03B21/20 ,  H01S5/026 ,  G02B27/10 ,  H01L25/16 ,  H01S5/062 ,  H04B10/50 ,  H04B10/69 ,  H04N9/31 ,  H01S5/068 ,  H01S5/40 ,  H01S5/00 ,  H01S5/042 ,  H01S5/0683

Abstract: Laser safety systems, devices, and methods for use in laser projectors are described. A laser projector includes any number of laser diodes that each emit laser light, a laser diode power source, a current sensor to detect a magnitude of the electric current output by the power source, a photodetector to detect a power/intensity of the laser light, a beam splitter to direct a first portion of the light towards the photodetector and a second portion of the light towards an output on the projector, and first and second laser safety circuits responsive to signals from the photodetector and the current sensor, respectively. The laser safety circuits selectively electrically couples/uncouples the laser diodes from the power source depending on signals from the photodetector and/or the current sensor. Particular applications of the laser safety systems, devices, and methods in a wearable heads-up display are described.

公开(公告)号：US10444609B2

公开(公告)日：2019-10-15

申请号：US16047857

申请日：2018-07-27

Applicant: North Inc.

Inventor： Kai Xu

IPC: G03B21/20 ,  G02B27/01 ,  G02B27/10 ,  H01L25/16 ,  G03B21/00 ,  H01S5/026 ,  H01S5/062 ,  H04B10/50 ,  H04B10/69 ,  H04N9/31 ,  H01S5/068 ,  H01S5/40 ,  H01S5/00 ,  H01S5/042 ,  H01S5/0683

Abstract: Laser safety systems, devices, and methods for use in laser projectors are described. A laser projector includes any number of laser diodes that each emit laser light, a laser diode power source, a current sensor to detect a magnitude of the electric current output by the power source, a photodetector to detect a power/intensity of the laser light, a beam splitter to direct a first portion of the light towards the photodetector and a second portion of the light towards an output on the projector, and first and second laser safety circuits responsive to signals from the photodetector and the current sensor, respectively. The laser safety circuits selectively electrically couples/uncouples the laser diodes from the power source depending on signals from the photodetector and/or the current sensor. Particular applications of the laser safety systems, devices, and methods in a wearable heads-up display are described.

公开(公告)号：US10444608B2

公开(公告)日：2019-10-15

申请号：US16047852

申请日：2018-07-27

Applicant: North Inc.

Inventor： Kai Xu

IPC: H04N9/31 ,  H01S5/062 ,  H01S5/40 ,  H04B10/50 ,  H04B10/69 ,  G03B21/20 ,  G02B27/01 ,  G02B27/10 ,  H01L25/16 ,  G03B21/00 ,  H01S5/026 ,  H01S5/068 ,  H01S5/00 ,  H01S5/042 ,  H01S5/0683

Abstract: Laser safety systems, devices, and methods for use in laser projectors are described. A laser projector includes any number of laser diodes that each emit laser light, a laser diode power source, a current sensor to detect a magnitude of the electric current output by the power source, a photodetector to detect a power/intensity of the laser light, a beam splitter to direct a first portion of the light towards the photodetector and a second portion of the light towards an output on the projector, and first and second laser safety circuits responsive to signals from the photodetector and the current sensor, respectively. The laser safety circuits selectively electrically couples/uncouples the laser diodes from the power source depending on signals from the photodetector and/or the current sensor. Particular applications of the laser safety systems, devices, and methods in a wearable heads-up display are described.

公开(公告)号：US20190198982A1

公开(公告)日：2019-06-27

申请号：US16231279

申请日：2018-12-21

Applicant: NORTH INC.

Inventor： Joshua Moore ,  Kai Xu ,  George Shaker

IPC: H01Q1/27 ,  G02C5/14 ,  G02C11/00

Abstract: The present disclosure relates to systems, devices and methods for eyeglasses frames and eyeglasses frames assemblies for wearable electronic devices, and particularly relates to systems, devices, and methods that employ an antenna in eyeglasses frames and eyeglasses frames assemblies for wearable heads-up displays. In an embodiment, a pair of eyeglasses includes a first arm housing a radio and an antenna passing internally from the radio to at least a portion of a front eyeglass frame, which includes a first and second rim securely physically coupled by a bridge. A power source is coupled to the first arm or a second arm and electrically coupled to the radio via an electrically conductive path.