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公开(公告)号：US20250053009A1
公开(公告)日：2025-02-13
申请号：US18718675
申请日：2022-12-16
Applicant: Magic Leap, Inc.
Inventor： Vikramjit Singh , Matthew C. Traub , Marlon Edward Menezes , Yingnan Liu , Frank Y. Xu
IPC: G02B27/01
Abstract: A waveguide stack having color-selective regions on one or more waveguides. The color-selective regions are configured to absorb incident light of a first wavelength range in such a way as to reduce or prevent the incident light of the first wavelength range from coupling into a waveguide configured to transmit a light of a second wavelength range.
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公开(公告)号：US12055725B2
公开(公告)日：2024-08-06
申请号：US18308404
申请日：2023-04-27
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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公开(公告)号：US11906763B2
公开(公告)日：2024-02-20
申请号：US17868485
申请日：2022-07-19
Applicant: Magic Leap, Inc.
Inventor： Shuqiang Yang , Kang Luo , Vikramjit Singh , Frank Y. Xu
CPC classification number: G02B5/1857 , G02B5/1842 , G02B27/0172 , G02B2027/0125
Abstract: A method of fabricating a blazed diffraction grating comprises providing a master template substrate and imprinting periodically repeating lines on the master template substrate in a plurality of master template regions. The periodically repeating lines in different ones of the master template regions extend in different directions. The method additionally comprises using at least one of the master template regions as a master template to imprint at least one blazed diffraction grating pattern on a grating substrate.
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公开(公告)号：US20230359036A1
公开(公告)日：2023-11-09
申请号：US18217418
申请日：2023-06-30
Applicant: Magic Leap, Inc.
Inventor： Ling Li , Christophe Peroz , Chieh Chang , Sharad D. Bhagat , Brian George Hill , Melanie Maputol West , Ryan Jason Ong , Xiaopei Deng , Shuqiang Yang , Frank Y. Xu , Ali Karbasi
CPC classification number: G02B27/0172 , G02B6/0076 , G02B2027/0178
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：US11614573B2
公开(公告)日：2023-03-28
申请号：US17019065
申请日：2020-09-11
Applicant: Magic Leap, Inc.
Inventor： Vikramjit Singh , Kang Luo , Xiaopei Deng , Shuqiang Yang , Frank Y. Xu , Kevin Messer
Abstract: 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 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 diffraction gratings and waveguides may include a transmissive layer and a metal layer. The diffraction grating may comprises a blazed grating.
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Patent Agency Ranking
公开(公告)号：US11281109B2
公开(公告)日：2022-03-22
申请号：US17222492
申请日：2021-04-05
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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47.发明申请公开(公告)号：US20210341744A1
公开(公告)日：2021-11-04
申请号：US17379919
申请日：2021-07-19
Applicant: Magic Leap, Inc.
Inventor： Jeffrey Dean Schmulen , Neal Paul Ricks , Samarth Bhargava , Kevin Messer , Victor Kai Liu , Matthew Grant Dixon , Xiaopei Deng , Marlon Edward Menezes , Shuqiang Yang , Vikramjit Singh , Kang Luo , Frank Y. Xu
Abstract: Display devices include waveguides with in-coupling optical elements that mitigate re-bounce of in-coupled light to improve overall in-coupling efficiency and/or uniformity. A waveguide receives light from a light source and/or projection optics and includes an in-coupling optical element that in-couples the received light to propagate by total internal reflection in a propagation direction within the waveguide. Once in-coupled into the waveguide the light may undergo re-bounce, in which the light reflects off a waveguide surface and, after the reflection, strikes the in-coupling optical element. Upon striking the in-coupling optical element, the light may be partially absorbed and/or out-coupled by the optical element, thereby effectively reducing the amount of in-coupled light propagating through the waveguide. The in-coupling optical element can be truncated or have reduced diffraction efficiency along the propagation direction to reduce the occurrence of light loss due to re-bounce of in-coupled light, resulting in less in-coupled light being prematurely out-coupled and/or absorbed during subsequent interactions with the in-coupling optical element.
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公开(公告)号：US20210271070A1
公开(公告)日：2021-09-02
申请号：US17246936
申请日：2021-05-03
Applicant: Magic Leap, Inc.
Inventor： Kang Luo , Vikramjit Singh , Nai-Wen Pi , Shuqiang Yang , Frank Y. Xu
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：US20210072437A1
公开(公告)日：2021-03-11
申请号：US17019065
申请日：2020-09-11
Applicant: Magic Leap, Inc.
Inventor： Vikramjit Singh , Kang Luo , Xiaopei Deng , Shuqiang Yang , Frank Y. Xu , Kevin Messer
Abstract: 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 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 diffraction gratings and waveguides may include a transmissive layer and a metal layer. The diffraction grating may comprises a blazed grating.
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公开(公告)号：US10747012B2
公开(公告)日：2020-08-18
申请号：US16705127
申请日：2019-12-05
Applicant: Magic Leap, Inc.
Inventor： Shuqiang Yang , Vikramjit Singh , Kang Luo , Nai-Wen Pi , Frank Y. Xu
Abstract: A method of depositing a variable thickness material includes providing a substrate and 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 the substrate and performing a plasma deposition process on the substrate to deposit the variable thickness material. A layer thickness adjacent the first region is greater than a layer thickness adjacent the second region.
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