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51.发明申请公开(公告)号：US20200033604A1
公开(公告)日：2020-01-30
申请号：US16520217
申请日：2019-07-23
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：US20180059304A1
公开(公告)日：2018-03-01
申请号：US15683702
申请日：2017-08-22
Applicant: Magic Leap, Inc.
Inventor： Samarth Bhargava , Robert D. TeKolste , Victor K. Liu , Christophe Peroz , Pierre St. Hilaire , Evgeni Poliakov , Jason Schaefer , Mauro Melli , Melanie West , Kang Luo , Vikramjit Singh , Frank Y. Xu
Abstract: A device includes an input coupling grating having a first grating structure characterized by a first set of grating parameters. The input coupling grating is configured to receive light from a light source. The device also includes an expansion grating having a second grating structure characterized by a second set of grating parameters varying in at least two dimensions. The second grating structure is configured to receive light from the input coupling grating. The device further includes an output coupling grating having a third grating structure characterized by a third set of grating parameters. The output coupling grating is configured to receive light from the expansion grating and to output light to a viewer.
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公开(公告)号：US20240310622A1
公开(公告)日：2024-09-19
申请号：US18675474
申请日：2024-05-28
Applicant: Magic Leap, Inc.
Inventor： Wendong Xing , Vikramjit Singh , Neal Paul Ricks , Jeffrey Dean Schmulen , Emory D. Carroll , K. Brent Binkley , Frank Y. Xu , Thomas Mercier , William Hudson Welch , Michael Anthony Klug
CPC classification number: G02B25/001 , G02B5/208 , G02B27/0006 , G02B27/0081
Abstract: An optical device, such as an eyepiece, including multiple layers of waveguides. The optical device can include an edge sealant for reducing light contamination, a lamination dam to restrict the wicking of the edge sealant between layers of the optical device, and venting gap(s) in the sealant and dam to allow air flow between the exterior and interior of the eyepiece. The gap(s) allow outgassing from the interior of the eyepiece of unreacted polymer and/or accumulated moisture, to prevent defect accumulation caused by chemical reaction of outgassed chemicals with the (e.g., ionic, acidic, etc.) surface of the eyepiece layers. The gap(s) also prevent pressure differences which may physically deform the eyepiece over time.
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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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55.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
56.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：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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公开(公告)号：US11609418B2
公开(公告)日：2023-03-21
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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