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公开(公告)号：US20200041712A1
公开(公告)日：2020-02-06
申请号：US16596630
申请日：2019-10-08
Applicant: Magic Leap, Inc.
Inventor： Christophe Peroz , Mauro Melli , Vikramjit Singh , David Jurbergs , Jeffrey Dean Schmulen , Zongxing Wang , Shuqiang Yang , Frank Y. Xu , Kang Luo , Marlon Edward Menezes , Michael Nevin Miller
IPC: F21V8/00 , G02B27/01 , G02B7/00 , G06F3/01 , G06F3/147 , G09G3/00 , G09G3/20 , G02B5/30 , G02B27/00 , G02B27/28 , G02B27/10 , H04N9/31 , G02C5/16 , G02C11/00 , G06F1/16 , G06F1/20 , H05K7/20 , G02B5/18
Abstract: A method of manufacturing a waveguide having a combination of a binary grating structure and a blazed grating structure includes cutting a substrate off-axis, depositing a first layer on the substrate, and depositing a resist layer on the first layer. The resist layer includes a pattern. The method also includes etching the first layer in the pattern using the resist layer as a mask. The pattern includes a first region and a second region. The method further includes creating the binary grating structure in the substrate in the second region and creating the blazed grating structure in the substrate in the first region.
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公开(公告)号：US10527865B2
公开(公告)日：2020-01-07
申请号：US16182309
申请日：2018-11-06
Applicant: Magic Leap, Inc.
Inventor： Shuqiang Yang , Vikramjit Singh , Kang Luo , Nai-Wen Pi , Frank Y. Xu
Abstract: A method of fabricating a diffractive structure with varying diffractive element depth includes providing a shadow mask having a first region with a first aperture dimension to aperture periodicity ratio and a second region with a second aperture dimension to aperture periodicity ratio less than the first aperture dimension to aperture periodicity ratio. The method also includes positioning the shadow mask adjacent a substrate. The substrate comprises an etch mask corresponding to the diffractive structure. The method further includes exposing the substrate to an etchant, etching the substrate to form diffractive elements adjacent the first region having a first depth, and etching the substrate to form diffractive elements adjacent the second region having a second depth less than the first depth.
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公开(公告)号：US20190121239A1
公开(公告)日：2019-04-25
申请号：US16165027
申请日：2018-10-19
Applicant: Magic Leap, Inc.
Inventor： Vikramjit Singh , Michael Nevin Miller , Frank Y. Xu , Shuqiang Yang
Abstract: An imprint lithography method of configuring an optical layer includes selecting one or more parameters of a nanolayer to be applied to a substrate for changing an effective refractive index of the substrate and imprinting the nanolayer on the substrate to change the effective refractive index of the substrate such that a relative amount of light transmittable through the substrate is changed by a selected amount.
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公开(公告)号：US12044851B2
公开(公告)日：2024-07-23
申请号：US17416248
申请日：2019-12-20
Applicant: Magic Leap, Inc.
Inventor： Xiaopei Deng , Vikramjit Singh , Shuqiang Yang , Kang Luo , Nai-Wen Pi , Frank Y. Xu
CPC classification number: G02B27/0172 , G02B6/0011 , G02B6/1223 , G02B6/13 , G02B27/0081 , G02B6/10 , G02B2027/0174
Abstract: Recesses are formed on a front side and a rear side of a waveguide. A solid porogen material is spun onto the front side and the rear side and fills the recesses. First front and rear cap layers are then formed on raised formations of the waveguide and on the solid porogen material. The entire structure is then heated and the solid porogen material decomposes to a porogen gas. The first front and rear cap layers are porous to allow the porogen gas to escape and air to enter into the recesses. The air maximizes a difference in refractive indices between the high-index transparent material of the waveguide and the air to promote reflection in the waveguide from interfaces between the waveguide and the air.
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45.发明授权公开(公告)号：US11994706B2
公开(公告)日：2024-05-28
申请号：US17320060
申请日：2021-05-13
Applicant: Magic Leap, Inc.
Inventor： Chulwoo Oh , Ravi Kumar Komanduri , Vikramjit Singh , Shuqiang Yang , Frank Y. Xu
CPC classification number: G02B6/0033 , G02B25/001 , G02B27/0172 , G02B6/262
Abstract: An eyepiece waveguide includes a set of waveguide layers having a world side and a user side. The eyepiece waveguide also includes a first cover plate having a first optical power and disposed adjacent the world side of the set of waveguide layers and a second cover plate having a second optical power and disposed adjacent the user side of the set of waveguide layers.
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Patent Agency Ranking
46.发明公开公开(公告)号：US20240085630A1
公开(公告)日：2024-03-14
申请号：US18513308
申请日：2023-11-17
Applicant: Magic Leap, Inc.
Inventor： Chulwoo Oh , Ravi Kumar Komanduri , Vikramjit Singh , Shuqiang Yang , Frank Y. Xu
CPC classification number: G02B6/262 , G02B25/001
Abstract: A method of fabricating an optical element includes providing a substrate, forming a castable material coupled to the substrate, and casting the castable material using a mold. The method also includes curing the castable material and removing the mold. The optical element comprises a planar region and a clear aperture adjacent the planar region and characterized by an optical power.
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公开(公告)号：US11921290B2
公开(公告)日：2024-03-05
申请号：US17145181
申请日：2021-01-08
Applicant: Magic Leap, Inc.
Inventor： Roy Matthew Patterson , Chulwoo Oh , Ravi Kumar Komanduri , Charles Scott Carden , Michael Nevin Miller , Vikramjit Singh , Shuqiang Yang
CPC classification number: G02B27/0172 , G02B6/0076 , G02F1/29 , G02B2027/0112 , G02F1/294
Abstract: A display device includes a waveguide assembly comprising a waveguide configured to outcouple light out of a major surface of the waveguide to form an image in the eyes of a user. An adaptive lens assembly has a major surface facing the output surface and a waveplate lens and a switchable waveplate assembly. The switchable waveplate assembly includes quarter-wave plates on opposing sides of a switchable liquid crystal layer, and electrodes on the quarter-wave plates in the volume between the quarter-wave plates. The electrodes can selectively establish an electric field and may serve as an alignment structure for molecules of the liquid crystal layer. Portions of the adaptive lens assembly may be manufactured by roll-to-roll processing in which a substrate roll is unwound, and alignment layers and liquid crystal layers are formed on the substrate as it moves towards a second roller, to be wound on that second roller.
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公开(公告)号：US11726317B2
公开(公告)日：2023-08-15
申请号：US16909922
申请日：2020-06-23
Applicant: Magic Leap, Inc.
Inventor： Ling Li , Ali Karbasi , Christophe Peroz , Chieh Chang , Sharad D. Bhagat , Brian George Hill , Melanie Maputol West , Ryan Jason Ong , Xiaopei Deng , Shuqiang Yang , Frank Y. Xu
CPC classification number: G02B27/0006 , G02B27/0172 , G02B27/0176 , G02B2027/0161 , G02B2027/0169
Abstract: A head-mounted, near-eye display system comprises a stack of waveguides having integral spacers separating the waveguides. The waveguides may each include diffractive optical elements that are formed simultaneously with the spacers by imprinting or casting. The spacers are disposed on one or more major surfaces of the waveguides and define a distance between immediately adjacent waveguides. Adjacent waveguides may be bonded using adhesives on the spacers. The spacers may fit within indentations of overlying waveguides. In some cases, the spacers may form one or more walls of material substantially around a perimeter of an associated waveguide. Vent holes may be provided in the walls to allow gas flow into and out from an interior volume defined by the spacers. Debris trapping structures may be provided between two walls of spacers to trap and prevent debris from entering into the interior volume.
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公开(公告)号：US20230204938A1
公开(公告)日：2023-06-29
申请号：US18172890
申请日：2023-02-22
Applicant: Magic Leap, Inc.
Inventor： Kang Luo , Vikramjit Singh , Nai-Wen Pi , Shuqiang Yang , Frank Y. Xu
CPC classification number: G02B25/001 , G02B6/2935 , G02B6/29334 , G02B6/29329
Abstract: An eyepiece includes a substrate and an in-coupling grating patterned on a single side of the substrate. A first grating coupler is patterned on the single side of the substrate and has a first grating pattern. The first grating coupler is optically coupled to the in-coupling grating. A second grating coupler is patterned on the single side of the substrate adjacent to the first grating coupler. The second grating coupler has a second grating pattern different from the first grating pattern. The second grating coupler is optically coupled to the in-coupling grating.
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公开(公告)号：US11668943B2
公开(公告)日：2023-06-06
申请号：US17716921
申请日：2022-04-08
Applicant: Magic Leap, Inc.
Inventor： Kang Luo , Vikramjit Singh , Nai-Wen Pi , Shuqiang Yang , Frank Y. Xu
CPC classification number: G02B27/0172 , G02B6/34 , G02B27/0176 , G02B2027/0178
Abstract: Blazed diffraction gratings provide optical elements in head-mounted display systems to, e.g., incouple light into or out-couple light out of a waveguide. These blazed diffraction gratings may be configured to have reduced polarization sensitivity. Such gratings may, for example, incouple or outcouple light of different polarizations with similar level of efficiency. The blazed diffraction gratings and waveguides may be formed in a high refractive index substrate such as lithium niobate. In some implementations, the blazed diffraction gratings may include diffractive features having a feature height of 40 nm to 120 nm, for example, 80 nm. The diffractive features may be etched into the high index substrate, e.g., lithium niobate.
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