公开(公告)号：US20250067847A1

公开(公告)日：2025-02-27

申请号：US18943728

申请日：2024-11-11

Applicant: Magic Leap, Inc.

Inventor： Charles David Melville ,  Mathew D. Watson ,  Abhijith Rajiv ,  Benjamin John Kuehn

IPC: G01S7/481 ,  G02B26/10

Abstract: A method of measuring a position of a scanning cantilever includes providing a housing including an actuation region, a position measurement region including an aperture, and an oscillation region. The method also includes providing a drive signal to an actuator disposed in the actuation region, oscillating the scanning cantilever in response to the drive signal, generating a first light beam using a first optical source, directing the first light beam toward the aperture, detecting at least a portion of the first light beam using a first photodetector, generating a second light beam using a second optical source, directing the second light beam toward the aperture, detecting at least a portion of the second light beam using a second photodetector, and determining the position of the scanning cantilever based on the detected portion of the first light beam and the detected portion of the second light beam.

公开(公告)号：US12135435B2

公开(公告)日：2024-11-05

申请号：US17210236

申请日：2021-03-23

Applicant: Magic Leap, Inc.

Inventor： Brian T. Schowengerdt ,  Mathew D. Watson

IPC: G02B27/42 ,  G02B26/10 ,  G02B27/01 ,  G03B21/14

Abstract: A method of displaying an image to a viewer includes operating a fiber scanning projector to produce a scanned light beam incident on an incoupling diffractive optical element (DOE) coupled to a waveguide. A portion of the light beam is reflected via a reflective back surface of the incoupling DOE. The reflected portion of the scanned light beam is incident on a reflective optical element, which reflects the light beam back to the incoupling DOE. The returning light beam is then diffracted by the incoupling DOE to produce a second pass first diffracted light beam. The second pass first diffracted light beam is propagated within the planar waveguide via total internal reflection (TIR) to an outcoupling DOE, which directs a portion of the second pass first diffracted light beam toward an eye of a viewer to display the image to the user.

公开(公告)号：US11935206B2

公开(公告)日：2024-03-19

申请号：US18296141

申请日：2023-04-05

Applicant: Magic Leap, Inc.

Inventor： Brian T. Schowengerdt ,  Mathew D. Watson ,  David Tinch ,  Ivan Li Chuen Yeoh ,  John Graham Macnamara ,  Lionel Ernest Edwin ,  Michael Anthony Klug ,  William Hudson Welch

IPC: G06T19/00 ,  G02B5/18 ,  G02B26/08 ,  G02B27/01 ,  G02B27/09 ,  G02B27/10 ,  G02B27/30 ,  G02B27/42 ,  G02B6/12

CPC classification number: G06T19/006 ,  G02B5/18 ,  G02B26/08 ,  G02B27/0172 ,  G02B27/0944 ,  G02B27/0955 ,  G02B27/0972 ,  G02B27/10 ,  G02B27/106 ,  G02B27/30 ,  G02B27/42 ,  G02B2006/1215 ,  G02B2027/0123 ,  G02B2027/0178

Abstract: A virtual image generation system comprises a planar optical waveguide having opposing first and second faces, an in-coupling (IC) element configured for optically coupling a collimated light beam from an image projection assembly into the planar optical waveguide as an in-coupled light beam, a first orthogonal pupil expansion (OPE) element associated with the first face of the planar optical waveguide for splitting the in-coupled light beam into a first set of orthogonal light beamlets, a second orthogonal pupil expansion (OPE) element associated with the second face of the planar optical waveguide for splitting the in-coupled light beam into a second set of orthogonal light beamlets, and an exit pupil expansion (EPE) element associated with the planar optical waveguide for splitting the first and second sets of orthogonal light beamlets into an array of out-coupled light beamlets that exit the planar optical waveguide.

公开(公告)号：US11838496B2

公开(公告)日：2023-12-05

申请号：US17306732

申请日：2021-05-03

Applicant: Magic Leap, Inc.

Inventor： Brian T Schowengerdt ,  Mathew D. Watson ,  Samuel Scott Frank ,  Charles David Melville

IPC: H04N13/383 ,  G02B27/01 ,  H04N9/31 ,  H04N13/344 ,  G02B27/00 ,  G02C11/00

CPC classification number: H04N13/383 ,  G02B27/0081 ,  G02B27/0093 ,  G02B27/0172 ,  G02B27/0179 ,  H04N9/3129 ,  H04N13/344 ,  G02B2027/0123 ,  G02B2027/0178 ,  G02B2027/0187 ,  G02C11/10

Abstract: An eye tracking system includes a pair of glasses including two frames; a light scanning projector coupled to the pair of glasses and operable to scan a beam of light to project an image frame including a plurality of pixels; an eyepiece mounted in one of the two frames and optically coupled to the light scanning projector; one or more photodetectors coupled to one of the two frames and operable to detect time-varying reflected signals; and a processor coupled to the light scanning projector and the photodetectors. The eyepiece includes an exit pupil expander operable to direct a portion of the beam of light towards an eye of a user. Each of the time-varying reflected signals is associated with the plurality of pixels. The processor is operable to correlate the time-varying reflected signals with the plurality of pixels and determine a first eye orientation.

公开(公告)号：US20210344897A1

公开(公告)日：2021-11-04

申请号：US17306732

申请日：2021-05-03

Applicant: Magic Leap, Inc.

Inventor： Brian T. Schowengerdt ,  Mathew D. Watson ,  Samuel Scott Frank ,  Charles David Melville

IPC: H04N13/383 ,  G02B27/01 ,  H04N9/31 ,  H04N13/344 ,  G02B27/00

Abstract: An eye tracking system includes a pair of glasses including two frames; a light scanning projector coupled to the pair of glasses and operable to scan a beam of light to project an image frame including a plurality of pixels; an eyepiece mounted in one of the two frames and optically coupled to the light scanning projector; one or more photodetectors coupled to one of the two frames and operable to detect time-varying reflected signals; and a processor coupled to the light scanning projector and the photodetectors. The eyepiece includes an exit pupil expander operable to direct a portion of the beam of light towards an eye of a user. Each of the time-varying reflected signals is associated with the plurality of pixels. The processor is operable to correlate the time-varying reflected signals with the plurality of pixels and determine a first eye orientation.

公开(公告)号：US11107288B2

公开(公告)日：2021-08-31

申请号：US16903279

申请日：2020-06-16

Applicant: Magic Leap, Inc.

Inventor： Brian T. Schowengerdt ,  Mathew D. Watson ,  David Tinch ,  Ivan Li Chuen Yeoh ,  John Graham Macnamara ,  Lionel Ernest Edwin ,  Michael Anthony Klug ,  William Hudson Welch

IPC: G06T19/00 ,  G02B27/09 ,  G02B27/10 ,  G02B27/30 ,  G02B5/18 ,  G02B27/42 ,  G02B27/01 ,  G02B26/08 ,  G02B6/12

Abstract: A virtual image generation system comprises a planar optical waveguide having opposing first and second faces, an in-coupling (IC) element configured for optically coupling a collimated light beam from an image projection assembly into the planar optical waveguide as an in-coupled light beam, a first orthogonal pupil expansion (OPE) element associated with the first face of the planar optical waveguide for splitting the in-coupled light beam into a first set of orthogonal light beamlets, a second orthogonal pupil expansion (OPE) element associated with the second face of the planar optical waveguide for splitting the in-coupled light beam into a second set of orthogonal light beamlets, and an exit pupil expansion (EPE) element associated with the planar optical waveguide for splitting the first and second sets of orthogonal light beamlets into an array of out-coupled light beamlets that exit the planar optical waveguide.

公开(公告)号：US11067797B2

公开(公告)日：2021-07-20

申请号：US15479700

申请日：2017-04-05

Applicant: MAGIC LEAP, INC.

Inventor： Brian T. Schowengerdt ,  Mathew D. Watson

IPC: G02B27/01 ,  G02B30/52

Abstract: An augmented reality system includes a light source configured to generate a virtual light beam. The system also includes a light guiding optical element having an entry portion, an exit portion, and a surface having a diverter disposed adjacent thereto. The light source and the light guiding optical element are configured such that the virtual light beam enters the light guiding optical element through the entry portion, propagates through the light guiding optical element by at least partially reflecting off of the surface, and exits the light guiding optical element through the exit portion. The light guiding optical element is transparent to a first real-world light beam. The diverter is configured to modify a light path of a second real-world light beam at the surface.

公开(公告)号：US11022793B2

公开(公告)日：2021-06-01

申请号：US15927765

申请日：2018-03-21

Applicant: Magic Leap, Inc.

Inventor： Brian T. Schowengerdt ,  Mathew D. Watson ,  Charles David Melville ,  Samuel Scott Frank

IPC: H04N9/14 ,  H04N9/31 ,  G02B26/10 ,  G02B27/28 ,  G02B27/30 ,  G02B27/01

Abstract: A fiber scanning projector includes a piezoelectric element and a scanning fiber mechanically coupled to the piezoelectric element. The fiber scanning projector also includes an optical assembly section operable to receive light from the scanning fiber. The optical assembly section includes a prism element, a collimating element coupled to the prism element at an interface, a quarter wave plate, and a polarizing beam splitter disposed at the interface.

公开(公告)号：US10723653B2

公开(公告)日：2020-07-28

申请号：US15851049

申请日：2017-12-21

Applicant: Magic Leap, Inc.

Inventor： Brian T. Schowengerdt ,  Mathew D. Watson ,  Charles David Melville ,  An-Shyang Chu ,  Timothy Mark Dalrymple ,  Vaibhav Mathur ,  Alejandro Lopez ,  Aaron Mark Schuelke

IPC: C03C25/68 ,  C03C25/6208

Abstract: A method of fabricating a variable diameter fiber includes providing a fiber optic cable, focusing a laser beam at a predetermined location inside the fiber optic cable, and creating a damage site at the predetermined location. The method also includes focusing the laser beam at a series of additional predetermined locations inside the fiber optic cable and creating a plurality of additional damage sites at the additional predetermined locations. The damage site and the additional damage sites define a variable diameter profile. The method further includes exposing the fiber optic cable to an etchant solution, preferentially etching the damage site and the plurality of additional damage sites, and separating a portion of the fiber optic cable to release the variable diameter fiber.

公开(公告)号：US10254483B2

公开(公告)日：2019-04-09

申请号：US15851005

申请日：2017-12-21

Applicant: Magic Leap, Inc.

Inventor： Brian T. Schowengerdt ,  Mathew D. Watson ,  Charles David Melville

IPC: G02B6/26 ,  C03C25/68 ,  G02B6/255 ,  G02B26/10

Abstract: A fiber optic element of a fiber scanning system includes a motion actuator having longitudinal side members, an internal orifice, a first support region, a central region, and a second support region. The fiber optic element also includes a first fiber optic cable passing through the internal orifice and having a first fiber joint as well as a second fiber optic cable passing through the internal orifice. The second fiber optic cable has a second fiber joint disposed in the central region and spliced to the first fiber joint, a second coupling region, a light delivery region, and a light emission tip. The light delivery region is characterized by a first diameter and the light emission tip is characterized by a second diameter less than the first diameter.