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公开(公告)号：US20240308162A1
公开(公告)日：2024-09-19
申请号：US18671622
申请日：2024-05-22
Applicant: Magic Leap, Inc.
Inventor： Chieh Chang , Christophe Peroz , Sharad D. Bhagat , Roy Matthew Patterson , Michael Anthony Klug , Charles Scott Carden
CPC classification number: B29D11/00663 , B29C35/08 , B29C35/0888 , B29C39/026 , B29C39/265 , B29C39/38 , B29C71/02 , B29C2035/0822 , B29C2035/0827 , B29C2071/022
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.
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2.发明公开公开(公告)号：US20230228934A1
公开(公告)日：2023-07-20
申请号：US18185032
申请日：2023-03-16
Applicant: Magic Leap, Inc.
Inventor： Sharad D. Bhagat , Brian George Hill , Christophe Peroz , Chieh Chang , Ling Li
CPC classification number: G02B27/0172 , G02B6/0065 , G02B6/0076 , G02B6/0038 , G02B2027/0112
Abstract: A diffractive waveguide stack includes first, second, and third diffractive waveguides for guiding light in first, second, and third visible wavelength ranges, respectively. The first diffractive waveguide includes a first material having first refractive index at a selected wavelength and a first target refractive index at a midpoint of the first visible wavelength range. The second diffractive waveguide includes a second material having a second refractive index at the selected wavelength and a second target refractive index at a midpoint of the second visible wavelength range. The third diffractive waveguide includes a third material having a third refractive index at the selected wavelength and a third target refractive index at a midpoint of the third visible wavelength range. A difference between any two of the first target refractive index, the second target refractive index, and the third target refractive index is less than 0.005 at the selected wavelength.
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3.发明授权公开(公告)号：US11567371B2
公开(公告)日：2023-01-31
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 , G02F1/1333 , G02B27/01 , C09K19/00 , B32B43/00 , B32B38/10
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.
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公开(公告)号：US20210405372A1
公开(公告)日：2021-12-30
申请号：US17359195
申请日：2021-06-25
Applicant: Magic Leap, Inc.
Inventor： Chieh Chang , Christophe Peroz , Ryan Jason Ong , Ling Li , Sharad D. Bhagat , Samarth Bhargava
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.
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公开(公告)号：US11198233B2
公开(公告)日：2021-12-14
申请号：US17285877
申请日：2019-10-16
Applicant: MAGIC LEAP, INC.
Inventor： Sharad D. Bhagat , Chieh Chang , Christophe Peroz
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.
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Patent Agency Ranking
公开(公告)号：US20190126223A1
公开(公告)日：2019-05-02
申请号：US16176337
申请日：2018-10-31
Applicant: Magic Leap, Inc.
Inventor： Sharad D. Bhagat , Vikramjit Singh , Christophe Peroz , Chieh Chang
Abstract: An example system is used to mix components and dispense a mixture for forming a thiol-ene polymer article. The system includes a first reservoir containing a first component of the thiol-ene polymer including a first polymerizable compound, and a second reservoir containing a second component of the thiol-ene polymer including a second polymerizable compound. The system also includes a mixing vessel having a mixing chamber, a delivery manifold providing a conduit for fluid from the first and second reservoirs to the mixing vessel, and a dispensing manifold providing a conduit for fluid from the mixing vessel. The system also includes a control module programmed to control the operation of the system.
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公开(公告)号：US12216242B2
公开(公告)日：2025-02-04
申请号：US17902729
申请日：2022-09-02
Applicant: Magic Leap, Inc.
Inventor： Christophe Peroz , Chieh Chang , Sharad D. Bhagat
Abstract: In some embodiments, a head-mounted augmented reality display system comprises one or more hybrid waveguides configured to display images by directing modulated light containing image information into the eyes of a viewer. Each hybrid waveguide is formed of two or more layers of different materials. The thicker of the layers is a highly optically transparent “core” layer, and the thinner layer comprises a pattern of protrusions and indentations to form, e.g., a diffractive optical element. The pattern may be formed by imprinting. The hybrid waveguide may include additional layers, e.g., forming a plurality of alternating core layers and thinner patterned layers. Multiple waveguides may be stacked to form an integrated eyepiece, with each waveguide configured to receive and output light of a different component color.
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公开(公告)号：US20240329282A1
公开(公告)日：2024-10-03
申请号：US18740415
申请日：2024-06-11
Applicant: Magic Leap, Inc.
Inventor： Ling Li , Chieh Chang , Sharad D. Bhagat , Christophe Peroz , Brian George Hill , Roy Matthew Patterson , Satish Sadam
CPC classification number: G02B3/0062 , B29C39/026 , G02B27/4272
Abstract: A system includes a first chuck operable to support a stencil including a plurality of apertures, a wafer chuck operable to support and move a wafer including a plurality of incoupling gratings, a first light source operable to direct light to impinge on a first surface of the stencil, and one or more second light sources operable to direct light to impinge on the wafer. The system also includes one or more lens and camera assemblies operable to receive light from the first light source passing through the plurality of apertures in the stencil and receive light from the one or more second light sources diffracted from the plurality of incoupling gratings in the wafer. The system also includes an alignment system operable to move the wafer with respect to the stencil to reduce an offset between aperture locations and incoupling grating locations.
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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
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.
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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
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.
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