公开(公告)号：US20230367132A1

公开(公告)日：2023-11-16

申请号：US18322401

申请日：2023-05-23

Applicant: Magic Leap, Inc.

Inventor： Hui-Chuan Cheng ,  Chulwoo Oh ,  Clinton Carlisle ,  Michael Anthony Klug ,  William J. Molteni, Jr.

IPC: G02B27/09 ,  G02B27/01 ,  G02B27/10

CPC classification number: G02B27/0944 ,  G02B27/0172 ,  G02B27/1046 ,  G02B27/1026 ,  G06T19/006

Abstract: Illuminations systems that separate different colors into laterally displaced beams may be used to direct different color image content into an eyepiece for displaying images in the eye. Such an eyepiece may be used, for example, for an augmented reality head mounted display. Illumination systems may be provided that utilize one or more waveguides to direct light from a light source towards a spatial light modulator. Light from the spatial light modulator may be directed towards an eyepiece. Some aspects of the invention provide for light of different colors to be outcoupled at different angles from the one or more waveguides and directed along different beam paths.

公开(公告)号：US20230244082A1

公开(公告)日：2023-08-03

申请号：US18160900

申请日：2023-01-27

Applicant: Magic Leap, Inc.

Inventor： Hui-Chuan Cheng ,  Hyunsun Chung ,  Jahja I. Trisnadi ,  Clinton Carlisle ,  Chulwoo Oh ,  Kevin Richard Curtis

IPC: G02B27/01 ,  G02B27/14 ,  G03B21/00 ,  G06T19/00 ,  G09G3/24 ,  G02B30/26 ,  G02B27/00 ,  G06F3/01 ,  G02B5/30 ,  F21V8/00 ,  G02F1/137

CPC classification number: G02B27/0172 ,  G02B27/141 ,  G03B21/00 ,  G06T19/00 ,  G09G3/24 ,  G02B30/26 ,  G02B27/0093 ,  G06F3/012 ,  G02B5/3016 ,  G02B6/0076 ,  G02B27/0103 ,  G02F1/137 ,  G02B2027/0174 ,  G02B2027/0134 ,  G03B21/208

Abstract: An optical device may include a light turning element. The optical device can include a first surface that is parallel to a horizontal axis and a second surface opposite to the first surface. The optical device may include a light module that includes a plurality of light emitters. The light module can be configured to combine light for the plurality of emitters. The optical device can further include a light input surface that is between the first and the second surfaces and is disposed with respect to the light module to receive light emitted from the plurality of emitters. The optical device may include an end reflector that is disposed on a side opposite the light input surface. The light coupled into the light turning element may be reflected by the end reflector and/or reflected from the second surface towards the first surface.

公开(公告)号：US20230236426A1

公开(公告)日：2023-07-27

申请号：US18296238

申请日：2023-04-05

Applicant: Magic Leap, Inc.

Inventor： David Manly ,  Vaibhav Mathur ,  Clinton Carlisle ,  Jonathan Alexander Rolon ,  Chulwoo Oh

IPC: G02B27/01 ,  G02B27/28 ,  G02F1/1335 ,  G02F1/13363 ,  G02F1/139

CPC classification number: G02B27/0172 ,  G02B27/281 ,  G02F1/133528 ,  G02F1/13363 ,  G02F1/1393 ,  G02F1/133502 ,  G02B2027/0178 ,  G02F2413/02 ,  G02F2413/05 ,  G02F2203/48 ,  G02F1/133541 ,  G02F1/133638

Abstract: A head-mounted apparatus include an eyepiece that include a variable dimming assembly and a frame mounting the eyepiece so that a user side of the eyepiece faces a towards a user and a world side of the eyepiece opposite the first side faces away from the user. The dynamic dimming assembly selectively modulates an intensity of light transmitted parallel to an optical axis from the world side to the user side during operation. The dynamic dimming assembly includes a variable birefringence cell having multiple pixels each having an independently variable birefringence, a first linear polarizer arranged on the user side of the variable birefringence cell, the first linear polarizer being configured to transmit light propagating parallel to the optical axis linearly polarized along a pass axis of the first linear polarizer orthogonal to the optical axis, a quarter wave plate arranged between the variable birefringence cell and the first linear polarizer, a fast axis of the quarter wave plate being arranged relative to the pass axis of the first linear polarizer to transform linearly polarized light transmitted by the first linear polarizer into circularly polarized light, and a second linear polarizer on the world side of the variable birefringence cell.

公开(公告)号：US11693282B2

公开(公告)日：2023-07-04

申请号：US17379895

申请日：2021-07-19

Applicant: Magic Leap, Inc.

Inventor： Chulwoo Oh ,  Mauro Melli ,  Christophe Peroz ,  Vikramjit Singh ,  Frank Xu ,  Michael Anthony Klug

IPC: G02F1/1347 ,  G02F1/29 ,  G02B5/18 ,  G02B6/00 ,  B81C1/00 ,  G02B5/30 ,  G02B27/00 ,  G02B27/01 ,  G02B3/00 ,  G02B27/10 ,  G02B30/36 ,  G02F1/1337

CPC classification number: G02F1/1347 ,  G02B5/1809 ,  G02B5/1847 ,  G02F1/29 ,  B81C1/0046 ,  G02B3/00 ,  G02B5/1833 ,  G02B5/1861 ,  G02B5/3016 ,  G02B5/3083 ,  G02B27/0081 ,  G02B27/0093 ,  G02B27/1006 ,  G02B30/36 ,  G02B2006/0098 ,  G02B2027/0134 ,  G02B2027/0174 ,  G02F1/133726 ,  G02F2203/24 ,  G02F2203/28

Abstract: An optical device includes a liquid crystal layer having a first plurality of liquid crystal molecules arranged in a first pattern and a second plurality of liquid crystal molecules arranged in a second pattern. The first and the second pattern are separated from each other by a distance of about 20 nm and about 100 nm along a longitudinal or a transverse axis of the liquid crystal layer. The first and the second plurality of liquid crystal molecules are configured as first and second grating structures that can redirect light of visible or infrared wavelengths.

公开(公告)号：US11586065B2

公开(公告)日：2023-02-21

申请号：US17174163

申请日：2021-02-11

Applicant: Magic Leap, Inc.

Inventor： Chulwoo Oh

IPC: G02F1/1335 ,  G02B27/42 ,  G02B5/18 ,  G02B27/01 ,  G02B5/30 ,  G02B6/34

Abstract: The present disclosure relates to display systems and, more particularly, to augmented reality display systems. A diffraction grating includes a plurality of different diffracting zones having a periodically repeating lateral dimension corresponding to a grating period adapted for light diffraction. The diffraction grating additionally includes a plurality of different liquid crystal layers corresponding to the different diffracting zones. The different liquid crystal layers have liquid crystal molecules that are aligned differently, such that the different diffracting zones have different optical properties associated with light diffraction.

公开(公告)号：US11561401B2

公开(公告)日：2023-01-24

申请号：US17096557

申请日：2020-11-12

Applicant: MAGIC LEAP, INC.

Inventor： Vaibhav Mathur ,  Joshua Naaman Haddock ,  Ted Diehl ,  Chulwoo Oh ,  Clinton Carlisle

IPC: G02F1/1333 ,  G02B27/01 ,  G02F1/1335 ,  G02F1/13363 ,  G02F1/1343 ,  G02F1/1368 ,  F21V8/00

Abstract: Techniques are described for operating an optical system. In some embodiments, light associated with a world object is received at the optical system. Virtual image light is projected onto an eyepiece of the optical system. A portion of a system field of view of the optical system to be at least partially dimmed is determined based on information detected by the optical system. A plurality of spatially-resolved dimming values for the portion of the system field of view may be determined based on the detected information. The detected information may include light information, gaze information, and/or image information. A dimmer of the optical system may be adjusted to reduce an intensity of light associated with the world object in the portion of the system field of view according to the plurality of dimming values.

公开(公告)号：US11435572B2

公开(公告)日：2022-09-06

申请号：US15796669

申请日：2017-10-27

Applicant: Magic Leap, Inc.

Inventor： Ivan Li-Chuen Yeoh ,  Lionel Ernest Edwin ,  Barak Freedman ,  Vaibhav Mathur ,  Xiaoyang Zhang ,  Timothy Mark Dalrymple ,  Clinton Carlisle ,  Chulwoo Oh ,  Philip Premysler

IPC: G02B26/12 ,  G02B5/30 ,  G02B5/18 ,  G02B26/10 ,  F21V8/00 ,  G02B26/08 ,  G02B27/01 ,  G02B27/10 ,  G02B27/28

Abstract: An image display system includes an optical subsystem configured to emit a first light beam and a second light beam, wherein the first light beam illuminates a first portion of a composite field of view and the second beam illuminates a second portion of the composite field of view. A scanning mirror is positioned to intercept and reflect the first light beam and the second light beam. The system also has a waveguide with at least one input coupling optical element for receiving the first light beam and the second light beam into the waveguide. The waveguide also has an output coupling optical element for projecting a plurality of output light beams derived from the first light beam and the second light beam from the waveguide to illuminate the composite field of view.

公开(公告)号：US20220179257A1

公开(公告)日：2022-06-09

申请号：US17673587

申请日：2022-02-16

Applicant: Magic Leap, Inc.

Inventor： Chulwoo Oh

IPC: G02F1/137 ,  G02F1/29 ,  G02F1/1335 ,  G02F1/01 ,  G02B27/01 ,  G06F3/038

Abstract: Examples of diffractive devices comprise a cholesteric liquid crystal (CLC) layer comprising a plurality of chiral structures, wherein each chiral structure comprises a plurality of liquid crystal molecules that extend in a layer depth direction by at least a helical pitch and are successively rotated in a first rotation direction. Arrangements of the liquid crystal molecules of the chiral structures vary periodically in a lateral direction perpendicular to the layer depth direction to provide a diffraction grating. The diffractive devices can be configured to reflect light having a particular wavelength range and sense of circular polarization. The diffractive devices can be used in waveguides and imaging systems in augmented or virtual reality systems.

公开(公告)号：US20210356747A1

公开(公告)日：2021-11-18

申请号：US17320090

申请日：2021-05-13

Applicant: Magic Leap, Inc.

Inventor： Ravi Kumar Komandury ,  Chulwoo Oh ,  Kevin Messer ,  Ioannis Papadopoulos

IPC: G02B27/01

Abstract: A pupil separation system includes an input surface, a central portion including a set of dichroic mirrors, a first reflective surface disposed laterally with respect to the central portion, and a second reflective surface disposed laterally with respect to the central portion. The pupil separation system also includes an exit face including a central surface operable to transmit light in a first wavelength range, a first peripheral surface adjacent the central surface and operable to transmit light in a second wavelength range, and a second peripheral surface adjacent the central surface and opposite to the first peripheral surface. The second peripheral surface is operable to transmit light in a third wavelength range.

公开(公告)号：US20210302802A1

公开(公告)日：2021-09-30

申请号：US17143039

申请日：2021-01-06

Applicant: Magic Leap, Inc.

Inventor： Chulwoo Oh

IPC: G02F1/365 ,  G02B3/00 ,  G02F1/00 ,  G02F1/1335

Abstract: A two-dimensional waveguide light multiplexer is described herein that can efficiently multiplex and distribute a light signal in two dimensions. An example of a two-dimensional waveguide light multiplexer can include a waveguide, a first diffraction grating, and a second diffraction grating disposed above the first diffraction grating and arranged such that the grating direction of the first diffraction grating is perpendicular to the grating direction of the second diffraction grating. Methods of fabricating a two-dimensional waveguide light multiplexer are also disclosed.