公开(公告)号：US11994670B2

公开(公告)日：2024-05-28

申请号：US17715730

申请日：2022-04-07

Applicant: Magic Leap, Inc.

Inventor： Sharad D. Bhagat ,  David Carl Jurbergs ,  Ryan Jason Ong ,  Christophe Peroz ,  Chieh Chang ,  Ling Li

IPC: G02B27/00 ,  B29D11/00 ,  F21V8/00 ,  G02B5/22

CPC classification number: G02B27/0025 ,  B29D11/00663 ,  G02B5/22 ,  G02B6/0026 ,  G02B6/0065 ,  G02B27/0081 ,  B29K2995/002

Abstract: Color-selective waveguides, methods for fabricating color-selective waveguides, and augmented reality (AR)/mixed reality (MR) applications including color-selective waveguides are described. The color-selective waveguides can advantageously reduce or block stray light entering a waveguide (e.g., red, green, or blue waveguide), thereby reducing or eliminating back-reflection or back-scattering into the eyepiece.

公开(公告)号：US11320591B2

公开(公告)日：2022-05-03

申请号：US17321837

申请日：2021-05-17

Applicant: Magic Leap, Inc.

Inventor： Chieh Chang ,  Christophe Peroz ,  Sharad D. Bhagat ,  Michael Anthony Klug ,  Charles Scott Carden ,  Roy Matthew Patterson ,  Matthew S. Shafran

IPC: G02B6/132 ,  B29D11/00 ,  G02B6/10 ,  G02B27/01 ,  B29C35/08 ,  G02B6/12

Abstract: In an example method of forming a waveguide film, a photocurable material is dispensed into a space between a first mold portion and a second mold portion opposite the first mold portion. Further, a relative separation between a surface of the first mold portion with respect to a surface of the second mold portion opposing the surface of the first mold portion is adjusted. The photocurable material in the space is irradiated with radiation suitable for photocuring the photocurable material to form a cured waveguide film. Concurrent to irradiating the photocurable material, the relative separation between the surface of the first mold portion and the surface of the second mold portion is varied and/or an intensity of the radiation irradiating the photocurable material is varied.

公开(公告)号：US11318692B2

公开(公告)日：2022-05-03

申请号：US16163350

申请日：2018-10-17

Applicant: Magic Leap, Inc.

Inventor： Chieh Chang ,  Christophe Peroz ,  Sharad D. Bhagat ,  Roy Matthew Patterson ,  Michael Anthony Klug ,  Charles Scott Carden

IPC: B29D11/00 ,  B29C39/02 ,  B29C35/08 ,  B29C39/26 ,  B29C39/38 ,  B29C71/02

Abstract: An example system for molding a photocurable material into a planar object includes a first mold structure having a first mold surface, a second mold structure having a second mold surface, and one or more protrusions disposed along at least one of the first mold surface or the second mold surface. During operation, the system is configured to position the first and second mold structures such that the first and second mold surfaces face each other with the one or more protrusions contacting the opposite mold surface, and a volume having a total thickness variation (TTV) of 500 nm or less is defined between the first and second mold surfaces. The system is further configured to receive the photocurable material in the volume, and direct radiation at the one or more wavelengths into the volume.

公开(公告)号：US20210271025A1

公开(公告)日：2021-09-02

申请号：US17321837

申请日：2021-05-17

Applicant: Magic Leap, Inc.

Inventor： Chieh Chang ,  Christophe Peroz ,  Sharad D. Bhagat ,  Michael Anthony Klug ,  Charles Scott Carden ,  Roy Matthew Patterson ,  Matthew S. Shafran

IPC: G02B6/132 ,  B29D11/00 ,  G02B6/10

Abstract: In an example method of forming a waveguide film, a photocurable material is dispensed into a space between a first mold portion and a second mold portion opposite the first mold portion. Further, a relative separation between a surface of the first mold portion with respect to a surface of the second mold portion opposing the surface of the first mold portion is adjusted. The photocurable material in the space is irradiated with radiation suitable for photocuring the photocurable material to form a cured waveguide film. Concurrent to irradiating the photocurable material, the relative separation between the surface of the first mold portion and the surface of the second mold portion is varied and/or an intensity of the radiation irradiating the photocurable material is varied.

公开(公告)号：US11009661B2

公开(公告)日：2021-05-18

申请号：US16654540

申请日：2019-10-16

Applicant: Magic Leap, INc.

Inventor： Chieh Chang ,  Christophe Peroz ,  Sharad D. Bhagat ,  Michael Anthony Klug ,  Charles Scott Carden ,  Roy Matthew Patterson ,  Matthew S. Shafran

IPC: G02B6/132 ,  B29D11/00 ,  G02B6/10 ,  G02B27/01 ,  B29C35/08 ,  B29C71/02 ,  G02B6/12

Abstract: In an example method of forming a waveguide film, a photocurable material is dispensed into a space between a first mold portion and a second mold portion opposite the first mold portion. Further, a relative separation between a surface of the first mold portion with respect to a surface of the second mold portion opposing the surface of the first mold portion is adjusted. The photocurable material in the space is irradiated with radiation suitable for photocuring the photocurable material to form a cured waveguide film. Concurrent to irradiating the photocurable material, the relative separation between the surface of the first mold portion and the surface of the second mold portion is varied and/or an intensity of the radiation irradiating the photocurable material is varied.

公开(公告)号：US20210103142A1

公开(公告)日：2021-04-08

申请号：US17065905

申请日：2020-10-08

Applicant: Magic Leap, Inc.

Inventor： Sharad D. Bhagat ,  David Carl Jurbergs ,  Ryan Jason Ong ,  Christophe Peroz ,  Chieh Chang ,  Ling Li

IPC: G02B27/00 ,  G02B5/22 ,  F21V8/00 ,  B29D11/00

Abstract: Color-selective waveguides, methods for fabricating color-selective waveguides, and augmented reality (AR)/mixed reality (MR) applications including color-selective waveguides are described. The color-selective waveguides can advantageously reduce or block stray light entering a waveguide (e.g., red, green, or blue waveguide), thereby reducing or eliminating back-reflection or back-scattering into the eyepiece.

公开(公告)号：US20200285120A1

公开(公告)日：2020-09-10

申请号：US16825913

申请日：2020-03-20

Applicant: Magic Leap, Inc.

Inventor： Chulwoo Oh ,  Chieh Chang ,  Sharad D. Bhagat ,  Michael Anthony Klug

IPC: G02F1/1337 ,  G02B27/01 ,  C09K19/00 ,  G02F1/1333

Abstract: Soft-imprint alignment processes for patterning liquid crystal polymer layers via contact with a reusable alignment template are described herein. An example soft-imprint alignment process includes contacting a liquid crystal polymer layer with a reusable alignment template that has a desired surface alignment pattern such that the liquid crystal molecules of the liquid crystal polymer are aligned to the surface alignment pattern via chemical, steric, or other intermolecular interaction. The patterned liquid crystal polymer layer may then be polymerized and separated from the reusable alignment template. The process can be repeated many times. The reusable alignment template may include a photo-alignment layer that does not comprise surface relief structures that correspond to the surface alignment pattern and a release layer above this photo-alignment layer. A reusable alignment template and methods of fabricating the same are also disclosed.

公开(公告)号：US20240391191A1

公开(公告)日：2024-11-28

申请号：US18790541

申请日：2024-07-31

Applicant: Magic Leap, Inc.

Inventor： Sharad D. Bhagat ,  Chieh Chang ,  Christophe Peroz

IPC: B29D11/00 ,  B29C35/08 ,  B29C39/26 ,  B29L11/00

Abstract: In an example method of forming a waveguide part having a predetermined shape, a photocurable material is dispensed into a space between a first mold portion and a second mold portion opposite the first mold portion. A relative separation between a surface of the first mold portion with respect to a surface of the second mold portion opposing the surface of the first mold portion is adjusted to fill the space between the first and second mold portions. The photocurable material in the space is irradiated with radiation suitable for photocuring the photocurable material to form a cured waveguide film so that different portions of the cured waveguide film have different rigidity. The cured waveguide film is separated from the first and second mold portions. The waveguide part is singulated from the cured waveguide film. The waveguide part corresponds to portions of the cured waveguide film having a higher rigidity than other portions of the cured waveguide film.

公开(公告)号：US12072502B2

公开(公告)日：2024-08-27

申请号：US18238635

申请日：2023-08-28

Applicant: Magic Leap, Inc.

Inventor： Chieh Chang ,  Christophe Peroz ,  Ryan Jason Ong ,  Ling Li ,  Sharad D. Bhagat ,  Samarth Bhargava

IPC: G02B27/01 ,  G02B5/18 ,  G02B6/02 ,  G02B27/00

CPC classification number: G02B27/0172 ,  G02B5/1814 ,  G02B6/02033 ,  G02B6/02066 ,  G02B27/0081 ,  G02B2027/0174 ,  G02B2027/0178

Abstract: A method, includes providing a wafer including a first surface grating extending over a first area of a surface of the wafer and a second surface grating extending over a second area of the surface of the wafer; de-functionalizing a portion of the surface grating in at least one of the first surface grating area and the second surface grating area; and singulating an eyepiece from the wafer, the eyepiece including a portion of the first surface grating area and a portion of the second surface grating area. The first surface grating in the eyepiece corresponds to an input coupling grating for a head-mounted display and the second surface grating corresponds to a pupil expander grating for the head-mounted display.

公开(公告)号：US12038591B2

公开(公告)日：2024-07-16

申请号：US16909760

申请日：2020-06-23

Applicant: Magic Leap, Inc.

Inventor： Ling Li ,  Chieh Chang ,  Sharad D. Bhagat ,  Christophe Peroz ,  Brian George Hill ,  Roy Matthew Patterson ,  Satish Sadam

IPC: B29C39/02 ,  G02B3/00 ,  G02B27/42

CPC classification number: G02B3/0062 ,  B29C39/026 ,  G02B27/4272

Abstract: A method of aligning a stencil to an eyepiece wafer includes providing the stencil, positioning the stencil with respect to a first light source, and determining locations of at least two stencil apertures. The method also includes providing the eyepiece wafer. The eyepiece wafer includes at least two eyepiece waveguides, each eyepiece waveguide including an incoupling grating and a corresponding diffraction pattern. The method further includes directing light from one or more second light sources to impinge on each of the corresponding diffraction patterns, imaging light diffracted from each incoupling grating, determining at least two incoupling grating locations, determining offsets between corresponding stencil aperture locations and incoupling grating locations, and aligning the stencil to the eyepiece wafer based on the determined offsets.