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公开(公告)号：US20220413302A1
公开(公告)日：2022-12-29
申请号：US17901326
申请日：2022-09-01
Applicant: Magic Leap, Inc.
Inventor： Nizan MEITAV , Barak FREEDMAN , Ori WEINSTEIN , Asaf PELLMAN , Chulwoo Oh , Frédéric MONTFORT
Abstract: A head mounted display system configured to project light to an eye of a user to display augmented reality images can include a frame configured to be supported on a head of the user, a camera disposed temporally on said frame, an eyepiece configured to direct light into said user's eye to display augmented reality image content to the user's vision field, a reflective element disposed on the frame, and at least one VCSEL disposed to illuminate said eye, wherein the camera is disposed with respect to the reflective element such that light from the VCSEL is reflected from the user's eye to the reflective element and is reflected from the reflective element to the camera to form images of the eye that are captured by the camera.
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132.发明授权公开(公告)号：US11531244B2
公开(公告)日：2022-12-20
申请号：US17252024
申请日：2019-06-13
Applicant: Magic Leap, Inc.
Inventor： Chulwoo Oh , Ravi Kumar Komanduri , Gary Sharp
IPC: G02F1/1337 , G02F1/1343 , G02F1/137 , G02B30/34 , G02B27/01 , G02F1/01 , G02F1/13
Abstract: A switchable optical assembly comprises a switchable waveplate configured to be electrically activated and deactivated to selectively alter the polarization state of light incident thereon. The switchable waveplate comprises first and second surfaces and a liquid crystal layer disposed between the first and second surfaces. The first liquid crystal layer comprises a plurality of liquid crystal molecules. Said first and second surfaces may be curved. Said plurality of liquid crystal molecules may vary in tilt with respect to said first and second surfaces with outward radial distance from an axis through said first and second surfaces and said liquid crystal layer in a plurality of radial directions. The switchable waveplate additionally comprises a first plurality of electrodes to apply an electrical signal across said first liquid crystal layer.
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公开(公告)号：US11474358B2
公开(公告)日：2022-10-18
申请号：US17207381
申请日：2021-03-19
Applicant: Magic Leap, Inc.
Inventor： Nizan Meitav , Barak Freedman , Ori Weinstein , Asaf Pellman , Chulwoo Oh , Frédéric Montfort
Abstract: A head mounted display system configured to project light to an eye of a user to display augmented reality images can include a frame configured to be supported on a head of the user, a camera disposed temporally on said frame, an eyepiece configured to direct light into said user's eye to display augmented reality image content to the user's vision field, a reflective element disposed on the frame, and at least one VCSEL disposed to illuminate said eye, wherein the camera is disposed with respect to the reflective element such that light from the VCSEL is reflected from the user's eye to the reflective element and is reflected from the reflective element to the camera to form images of the eye that are captured by the camera.
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公开(公告)号：US20220155525A1
公开(公告)日：2022-05-19
申请号：US17590482
申请日：2022-02-01
Applicant: Magic Leap, Inc.
Inventor： Chulwoo Oh , Vikraman Parthiban
Abstract: In one aspect, an optical device comprises a plurality of waveguides formed over one another and having formed thereon respective diffraction gratings, wherein the respective diffraction gratings are configured to diffract visible light incident thereon into respective waveguides, such that visible light diffracted into the respective waveguides propagates therewithin. The respective diffraction gratings are configured to diffract the visible light into the respective waveguides within respective field of views (FOVs) with respect to layer normal directions of the respective waveguides. The respective FOVs are such that the plurality of waveguides are configured to diffract the visible light within a combined FOV that is continuous and greater than each of the respective FOVs
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公开(公告)号：US20220121046A1
公开(公告)日：2022-04-21
申请号：US17646094
申请日：2021-12-27
Applicant: Magic Leap, Inc.
Inventor： Chulwoo Oh
Abstract: Example display devices include a waveguide configured to propagate visible light under total internal reflection in a direction parallel to a major surface of the waveguide. The waveguide has formed thereon an outcoupling element configured to outcouple a portion of the visible light in a direction normal to the major surface of the waveguide. The example display devices additionally include a polarization-selective notch reflector disposed on a first side of the waveguide and configured to reflect visible light having a first polarization while transmitting the portion of the visible light having a second polarization. The example display devices further include a polarization-independent notch reflector disposed on a second side of the waveguide and configured to reflect visible light having the first polarization and the second polarization, where the polarization-independent notch reflector is configured to convert a polarization of visible light reflecting therefrom.
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Patent Agency Ranking
136.发明授权公开(公告)号：US11231612B2
公开(公告)日：2022-01-25
申请号：US16171290
申请日：2018-10-25
Applicant: Magic Leap, Inc.
Inventor： Chulwoo Oh , Ravi Kumar Komanduri , Roy Matthew Patterson , Charles Scott Carden , Michael Nevin Miller , Vikramjit Singh
IPC: G02F1/1335 , G09G5/00 , G02B6/12 , G09G3/00 , G09G5/14 , G02B1/00 , G02B5/30 , G02B5/18 , G02B6/122 , G02B27/01 , G02F1/1337 , G06K9/00 , G06T19/00
Abstract: A display device comprises a waveguide configured to guide light in a lateral direction parallel to an output surface of the waveguide. The waveguide is further configured to outcouple the guided light through the output surface. The display device additionally comprises a broadband adaptive lens assembly configured to incouple and to diffract therethrough the outcoupled light from the waveguide. The broadband adaptive lens assembly comprises a first waveplate lens comprising a liquid crystal (LC) layer arranged such that the waveplate lens has birefringence (Δn) that varies in a radially outward direction from a central region of the first waveplate lens and configured to diffract the outcoupled light at a diffraction efficiency greater than 90% within a wavelength range including at least 450 nm to 630 nm. The broadband adaptive lens assembly is configured to be selectively switched between a plurality of states having different optical powers.
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公开(公告)号：US20220011578A1
公开(公告)日：2022-01-13
申请号：US17279428
申请日：2019-09-25
Applicant: Magic Leap, Inc.
Inventor： Asif Sinay , Nizan Meitav , Chulwoo Oh , Barak Freedman , Michael Anthony Klug , Adam C. Carlson
Abstract: A head mounted display system can include a camera, at least one waveguide, at least one coupling optical element that is configured such that light is coupled into said waveguide and guided therein, and at least one out-coupling element. The at least one out-coupling element can be configured to couple light that is guided within said waveguide out of said waveguide and direct said light to said camera. The at least one coupling element may comprise a diffractive optical element having optical power. Additionally or alternatively, the at least one coupling optical element may have a coupling area for coupling light into said waveguide having an average thickness in a range from 0.1 to 3 millimeters across and/or may have a slit shaped coupling area.
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公开(公告)号：US11215895B2
公开(公告)日：2022-01-04
申请号：US16986106
申请日：2020-08-05
Applicant: Magic Leap, Inc.
Inventor： Chulwoo Oh
Abstract: Example display devices include a waveguide configured to propagate visible light under total internal reflection in a direction parallel to a major surface of the waveguide. The waveguide has formed thereon an outcoupling element configured to outcouple a portion of the visible light in a direction normal to the major surface of the waveguide. The example display devices additionally include a polarization-selective notch reflector disposed on a first side of the waveguide and configured to reflect visible light having a first polarization while transmitting the portion of the visible light having a second polarization. The example display devices further include a polarization-independent notch reflector disposed on a second side of the waveguide and configured to reflect visible light having the first polarization and the second polarization, where the polarization-independent notch reflector is configured to convert a polarization of visible light reflecting therefrom.
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139.发明申请公开(公告)号：US20210397008A1
公开(公告)日：2021-12-23
申请号：US17465312
申请日：2021-09-02
Applicant: Magic Leap, Inc.
Inventor： Chulwoo Oh
Abstract: An optical device includes a stack of multiple grating structures, each of which includes a plurality of sublayers of liquid crystal material. Each sublayer of liquid crystal material includes laterally extending repeating units, each formed of a plurality of liquid crystal molecules. The repeating units of the liquid crystal layers are lateral offset from one another, and defined a tilt angle. The grating structures forming the stack of grating structure have tilt angles of different magnitudes. The grating structures may be configured to redirect light of visible or infrared wavelengths. Advantageously, the different tilt angles of the stack of grating structures allows for highly efficient diffraction of light incident on the grating structures at a wide range of incident angles.
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140.发明申请公开(公告)号：US20210356670A1
公开(公告)日：2021-11-18
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
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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