-
公开(公告)号：US11307408B2
公开(公告)日：2022-04-19
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
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.
-
42.发明申请公开(公告)号：US20210382221A1
公开(公告)日：2021-12-09
申请号：US17409163
申请日：2021-08-23
Applicant: Magic Leap, Inc.
Inventor： Sharad D. Bhagat , Brian George Hill , Christophe Peroz , Chieh Chang , Ling Li
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.
-
公开(公告)号：US20210283806A1
公开(公告)日：2021-09-16
申请号：US17200239
申请日：2021-03-12
Applicant: Magic Leap, Inc.
Inventor： Jeremy Lee Sevier , Matthew S. Shafran , Satish Sadam , Roy Matthew Patterson , Kangkang Wang , Chieh Chang , Charles Scott Carden
Abstract: In an example method of forming an optical film for an eyepiece, a curable material is dispensed into a space between a first and a second mold surface. A position of the first mold surface relative to the second mold surface is measured using a plurality of sensors. Each sensor measures a respective relative distance along a respective measurement axis between a respective point on a planar portion of the first mold surface and a respective point on a planar portion of the second mold surface. The measurement axes are parallel to each other, and the points define corresponding triangles on the first and second mold surfaces, respectively. The position of the first mold surface is adjusted relative to the second mold surface based on the measured position, and the curable material is cured to form the optical film.
-
公开(公告)号：US20210157032A1
公开(公告)日：2021-05-27
申请号：US17044798
申请日：2019-04-01
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.
-
公开(公告)号：US20210011305A1
公开(公告)日：2021-01-14
申请号：US16926352
申请日：2020-07-10
Applicant: Magic Leap, Inc.
Inventor： Chieh Chang , Victor Kai Liu , Samarth Bhargava , Ling Li , Sharad D. Bhagat , Christophe Peroz , Jason Donald Mareno
Abstract: A dynamic eyepiece for projecting an image to an eye of a viewer includes a waveguide layer having an input surface, an output surface opposing the input surface, and a periphery. The waveguide layer is configured to propagate light therein. The dynamic eyepiece also includes a mechanical structure coupled to at least a portion of the periphery of the waveguide layer. The mechanical structure is operable to apply a first mechanical force to the at least a portion of the periphery of the waveguide layer to impose a first surface profile on the output surface of the waveguide layer and apply a second mechanical force to the at least a portion of the periphery of the waveguide layer to impose a second surface profile different from the first surface profile on the output surface of the waveguide layer.
-
Patent Agency Ranking
公开(公告)号：US20190111642A1
公开(公告)日：2019-04-18
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
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.
-
47.发明申请公开(公告)号：US20180164645A1
公开(公告)日：2018-06-14
申请号：US15841037
申请日：2017-12-13
Applicant: Magic Leap, Inc.
Inventor： Chulwoo Oh , Chieh Chang , Sharad Bhagat , Michael Anthony Klug
IPC: G02F1/1337 , G02F1/1333 , B32B43/00
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：US20240377644A1
公开(公告)日：2024-11-14
申请号：US18779810
申请日：2024-07-22
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.
-
公开(公告)号：US20240302652A1
公开(公告)日：2024-09-12
申请号：US18654811
申请日：2024-05-03
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.
-
公开(公告)号：US20240173930A1
公开(公告)日：2024-05-30
申请号：US18388660
申请日：2023-11-10
Applicant: Magic Leap, Inc.
Inventor： Mauro MELLI , Chieh Chang , Ling Li , Melanie Maputol WEST , Christophe Peroz , Ali KARBASI , Sharad D. Bhagat , Brian George HILL
CPC classification number: B29D11/00682 , B29C33/424 , G02B6/136 , G02B2006/12107 , G02B2006/12173 , G02B2006/12176
Abstract: Methods are disclosed for fabricating molds for forming eyepieces having waveguides with integrated spacers. The molds are formed by etching deep holes (e.g., 5 μm to 1000 μm deep) into a substrate using a wet etch or dry etch. The etch masks for defining the holes may be formed with a thick metal layer and/or multiple layers of different metals. A resist layer may be disposed over the etch mask. The resist layer may be patterned to form a pattern of holes, the pattern may be transferred to the etch mask, and the etch mask may be used to transfer the pattern into the underlying substrate. The patterned substrate may be utilized as a mold onto which a flowable polymer may be introduced and allowed to harden. Hardened polymer in the holes may form integrated spacers. The hardened polymer may be removed from the mold to form a waveguide with integrated spacers.
-
-
-
-
-
-
-
-
-
Search Results
59
records
(took 0.023 seconds)
