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11.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：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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13.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：US12001110B2
公开(公告)日：2024-06-04
申请号：US17359146
申请日：2021-06-25
Applicant: Magic Leap, Inc.
Inventor： Hui-Chuan Cheng , David Manly , Vaibhav Mathur , Joshua Naaman Haddock , Kevin Messer , Clinton Carlisle
IPC: G02F1/137 , G02B25/00 , G02B27/01 , G02F1/01 , G02F1/1335 , G02F1/13363 , G02F1/1347
CPC classification number: G02F1/137 , G02B25/001 , G02B27/0172 , G02F1/0136 , G02F1/133531 , G02F1/133541 , G02F1/133634 , G02F1/133638 , G02F1/1347 , G02B2027/0118 , G02B2027/0138 , G02B2027/014 , G02B2027/0178 , G02F2203/48 , G02F2413/02
Abstract: A method for displaying an image using a wearable display system including directing display light from a display towards a user through an eyepiece to project images in the user's field of view, determining a relative location between an ambient light source and the eyepiece, and adjusting an attenuation of ambient light from the ambient light source through the eyepiece depending on the relative location between the ambient light source and the eyepiece.
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公开(公告)号：US11953653B2
公开(公告)日：2024-04-09
申请号：US17650188
申请日：2022-02-07
Applicant: Magic Leap, Inc.
Inventor： Christophe Peroz , Kevin Messer
CPC classification number: G02B1/115 , G02B6/0026 , G02B6/005 , G02B6/0076 , G02B27/0172 , G02B2005/1804 , G02B6/0065
Abstract: An anti-reflective waveguide assembly comprising a waveguide substrate having a first index of refraction, a plurality of diffractive optical elements disposed upon a first surface of the waveguide and an anti-reflective coating disposed upon a second surface of the waveguide. The anti-reflective coating preferably increases absorption of light through a surface to which it is applied into the waveguide so that at least 97 percent of the light is transmitted. The anti-reflective coating is composed of four layers of material having different indices of refraction that the first index of refraction and an imaginary refractive index less than 1×10−3 but preferably less than 5×10−4.
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Patent Agency Ranking
公开(公告)号：US11942013B2
公开(公告)日：2024-03-26
申请号：US17359322
申请日：2021-06-25
Applicant: Magic Leap, Inc.
Inventor： Kevin Messer , Miller Harry Schuck, III , Nicholas Ihle Morley , Po-Kang Huang , Nukul Sanjay Shah , Marshall Charles Capps , Robert Blake Taylor
CPC classification number: G09G3/2003 , G09G5/10 , G09G2300/0452 , G09G2340/06
Abstract: Disclosed are techniques for improving the color uniformity of a display of a display device. A plurality of images of the display are captured using an image capture device. The plurality of images are captured in a color space, with each image corresponding to one of a plurality of color channels. A global white balance is performed to the plurality of images to obtain a plurality of normalized images. A local white balance is performed to the plurality of normalized images to obtain a plurality of correction matrices. Performing the local white balance includes defining a set of weighting factors based on a figure of merit and computing a plurality of weighted images based on the plurality of normalized images and the set of weighting factors. The plurality of correction matrices are computed based on the plurality of weighted images.
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公开(公告)号：US20240027767A1
公开(公告)日：2024-01-25
申请号：US18213124
申请日：2023-06-22
Applicant: Magic Leap, Inc.
Inventor： Samarth Bhargava , Victor Kai Liu , Kevin Messer
CPC classification number: G02B27/0172 , G06T19/006 , G02B27/283 , G02B2027/0118
Abstract: An eyepiece waveguide for an augmented reality display system. The eyepiece waveguide can include an input coupling grating (ICG) region. The ICG region can couple an input beam into the substrate of the eyepiece waveguide as a guided beam. A first combined pupil expander-extractor (CPE) grating region can be formed on or in a surface of the substrate. The first CPE grating region can receive the guided beam, create a first plurality of diffracted beams at a plurality of distributed locations, and out-couple a first plurality of output beams. The eyepiece waveguide can also include a second CPE grating region formed on or in the opposite surface of the substrate. The second CPE grating region can receive the guided beam, create a second plurality of diffracted beams at a plurality of distributed locations, and out-couple a second plurality of output beams.
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公开(公告)号：US11693252B2
公开(公告)日：2023-07-04
申请号：US17072510
申请日：2020-10-16
Applicant: Magic Leap, Inc.
Inventor： David Manly , Kevin Messer , Vaibhav Mathur , Clinton Carlisle
IPC: G02B27/28 , G02B27/01 , G02F1/137 , G02F1/1335 , G02B5/30
CPC classification number: G02B27/281 , G02B5/3025 , G02B27/0172 , G02F1/137 , G02F1/133528 , G02B2027/014 , G02B2027/0178
Abstract: A wearable display system includes an eyepiece stack having a world side and a user side opposite the world side, wherein during use a user positioned on the user side views displayed images delivered by the system via the eyepiece stack which augment the user's view of the user's environment. The wearable display system also includes an angularly selective film arranged on the world side of the of the eyepiece stack. The angularly selective film includes a polarization adjusting film arranged between pair of linear polarizers. The linear polarizers and polarization adjusting film significantly reduces transmission of visible light incident on the angularly selective film at large angles of incidence without significantly reducing transmission of light incident on the angularly selective film at small angles of incidence.
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公开(公告)号：US11280937B2
公开(公告)日：2022-03-22
申请号：US16214575
申请日：2018-12-10
Applicant: Magic Leap, Inc.
Inventor： Christophe Peroz , Kevin Messer
Abstract: An anti-reflective waveguide assembly comprising a waveguide substrate having a first index of refraction, a plurality of diffractive optical elements disposed upon a first surface of the waveguide and an anti-reflective coating disposed upon a second surface of the waveguide. The anti-reflective coating preferably increases absorption of light through a surface to which it is applied into the waveguide so that at least 97 percent of the light is transmitted. The anti-reflective coating is composed of four layers of material having different indices of refraction that the first index of refraction and an imaginary refractive index less than 1×10−3 but preferably less than 5×10−4.
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公开(公告)号：US20210407365A1
公开(公告)日：2021-12-30
申请号：US17359322
申请日：2021-06-25
Applicant: Magic Leap, Inc.
Inventor： Kevin Messer , Miller Harry Schuck, III , Nicholas Ihle Morley , Po-Kang Huang , Nukul Sanjay Shah , Marshall Charles Capps , Robert Blake Taylor
Abstract: Disclosed are techniques for improving the color uniformity of a display of a display device. A plurality of images of the display are captured using an image capture device. The plurality of images are captured in a color space, with each image corresponding to one of a plurality of color channels. A global white balance is performed to the plurality of images to obtain a plurality of normalized images. A local white balance is performed to the plurality of normalized images to obtain a plurality of correction matrices. Performing the local white balance includes defining a set of weighting factors based on a figure of merit and computing a plurality of weighted images based on the plurality of normalized images and the set of weighting factors. The plurality of correction matrices are computed based on the plurality of weighted images.
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