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公开(公告)号：US11609480B2
公开(公告)日：2023-03-21
申请号：US17143039
申请日：2021-01-06
申请人： Magic Leap, Inc.
发明人： Chulwoo Oh
IPC分类号： G02F1/365 , G02B3/00 , G02F1/00 , G02F1/1335
摘要： A two-dimensional waveguide light multiplexer is described herein that can efficiently multiplex and distribute a light signal in two dimensions. An example of a two-dimensional waveguide light multiplexer can include a waveguide, a first diffraction grating, and a second diffraction grating disposed above the first diffraction grating and arranged such that the grating direction of the first diffraction grating is perpendicular to the grating direction of the second diffraction grating. Methods of fabricating a two-dimensional waveguide light multiplexer are also disclosed.
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公开(公告)号：US20220342214A1
公开(公告)日：2022-10-27
申请号：US17863218
申请日：2022-07-12
申请人： Magic Leap, Inc.
发明人： Kevin Richard Curtis , Samarth Bhargava , Bradley Jay Sissom , Victor Kai Liu , Chulwoo Oh , Ravi Kumar Komanduri , Kevin Messer
摘要： Techniques for artifact mitigation in an optical system are disclosed. Light associated with a world object is received at the optical system, which is characterized by a world side and a user side. Light associated with a virtual image is projected onto an eyepiece of the optical system, causing a portion of the light associated with the virtual image to propagate toward the user side and light associated with an artifact image to propagate toward the world side. A dimmer of the optical system positioned between the world side and the eyepiece is adjusted to reduce an intensity of the light associated with the artifact image impinging on the dimmer and an intensity of the light associated with the world object impinging on the dimmer.
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公开(公告)号：US11422364B2
公开(公告)日：2022-08-23
申请号：US16718017
申请日：2019-12-17
申请人： Magic Leap, Inc.
发明人： Kevin Richard Curtis , Samarth Bhargava , Bradley Jay Sissom , Victor Kai Liu , Chulwoo Oh , Ravi Kumar Komanduri , Kevin Messer
摘要： Techniques for artifact mitigation in an optical system are disclosed. Light associated with a world object is received at the optical system, which is characterized by a world side and a user side. Light associated with a virtual image is projected onto an eyepiece of the optical system, causing a portion of the light associated with the virtual image to propagate toward the user side and light associated with an artifact image to propagate toward the world side. A dimmer of the optical system positioned between the world side and the eyepiece is adjusted to reduce an intensity of the light associated with the artifact image impinging on the dimmer and an intensity of the light associated with the world object impinging on the dimmer.
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公开(公告)号：US11300844B2
公开(公告)日：2022-04-12
申请号：US17175566
申请日：2021-02-12
申请人： Magic Leap, Inc.
摘要： A wearable augmented reality head-mounted display system can be configured to pass light from the world forward a wearer wearing the head-mounted system into an eye of the wearer. The head-mounted display system can include an optical display that is configured to output light to form an image. The system may include one or more waveguides that are disposed to receiving the light from the display. A variable power reflector can be disposed on the forward side of the one or more waveguides. The reflector can be configured to have an optical power that is adjustable upon application of an electrical signal.
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公开(公告)号：US20220082837A1
公开(公告)日：2022-03-17
申请号：US17456083
申请日：2021-11-22
申请人： Magic Leap, Inc.
发明人： Hui-Chuan Cheng , Hyunsun Chung , Jahja I. Trisnadi , Clinton Carlisle , Kevin Richard Curtis , Chulwoo Oh
IPC分类号： G02B27/01 , G02B27/14 , G03B21/00 , G06T19/00 , G09G3/24 , G02B30/26 , G02B27/00 , G06F3/01 , G02B5/30 , F21V8/00 , G02F1/137
摘要： An optical device comprising may include a wedge-shaped light turning element. The optical device can include a first surface that is parallel to a horizontal axis and a second surface opposite to the first surface that is inclined with respect to the horizontal axis by a wedge angle. The optical device may include a light module that includes a plurality of light emitters. The light module can be configured to combine light for the plurality of emitters. The optical device can further include a light input surface that is between the first and the second surfaces and is disposed with respect to the light module to receive light emitted from the plurality of emitters. The optical device may include an end reflector that is disposed on a side opposite the light input surface. The second surface may be inclined such that a height of the light input surface is less than a height of the side opposite the light input surface. The light coupled into the wedge-shaped light turning element may be reflected by the end reflector and/or reflected from the second surface towards the first surface.
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公开(公告)号：US20220026719A1
公开(公告)日：2022-01-27
申请号：US17450627
申请日：2021-10-12
申请人： Magic Leap, Inc.
IPC分类号： G02B27/01 , G02F1/1335 , G02F1/13363 , G02F1/139 , G02B27/28
摘要： A head-mounted apparatus include an eyepiece that include a variable dimming assembly and a frame mounting the eyepiece so that a user side of the eyepiece faces a towards a user and a world side of the eyepiece opposite the first side faces away from the user. The dynamic dimming assembly selectively modulates an intensity of light transmitted parallel to an optical axis from the world side to the user side during operation. The dynamic dimming assembly includes a variable birefringence cell having multiple pixels each having an independently variable birefringence, a first linear polarizer arranged on the user side of the variable birefringence cell, the first linear polarizer being configured to transmit light propagating parallel to the optical axis linearly polarized along a pass axis of the first linear polarizer orthogonal to the optical axis, a quarter wave plate arranged between the variable birefringence cell and the first linear polarizer, a fast axis of the quarter wave plate being arranged relative to the pass axis of the first linear polarizer to transform linearly polarized light transmitted by the first linear polarizer into circularly polarized light, and a second linear polarizer on the world side of the variable birefringence cell.
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公开(公告)号：US20210294106A1
公开(公告)日：2021-09-23
申请号：US17207381
申请日：2021-03-19
申请人： Magic Leap, Inc.
发明人： Nizan Meitav , Barak Freedman , Ori Weinstein , Asaf Pellman , Chulwoo Oh , Frédéric Montfort
摘要： 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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8.发明申请公开(公告)号：US20210231986A1
公开(公告)日：2021-07-29
申请号：US17252024
申请日：2019-06-13
申请人： Magic Leap, Inc.
发明人： Chulwoo Oh , Ravi Kumar Komanduri , Gary Sharp
摘要： 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：US20210157265A1
公开(公告)日：2021-05-27
申请号：US17100387
申请日：2020-11-20
申请人： Magic Leap, Inc.
发明人： Ravi Kumar Komanduri , Chulwoo Oh
IPC分类号： G03H1/02
摘要： In some implementations, an optical master is created by using a nanoimprint alignment layer to pattern a liquid crystal layer. The nanoimprint alignment layer and the liquid crystal layer constitute the optical master. The optical master is positioned above a photo-alignment layer. The optical master is illuminated and light propagating through the nanoimprinted alignment layer and the liquid crystal layer is diffracted and subsequently strikes the photo-alignment layer. The incident diffracted light causes the pattern in the liquid crystal layer to be transferred to the photo-alignment layer. A second liquid crystal layer is deposited onto the patterned photo-alignment layer, which subsequently is used to align the molecules of the second liquid crystal layer. In some implementations, the second liquid crystal layer in the patterned photo-alignment layer may be utilized as a replica optical master or as a diffractive optical element, such as for directing light in optical devices such as display devices, including augmented reality display devices.
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公开(公告)号：US10962855B2
公开(公告)日：2021-03-30
申请号：US15902814
申请日：2018-02-22
申请人： Magic Leap, Inc.
摘要： A wearable augmented reality head-mounted display system can be configured to pass light from the world forward a wearer wearing the head-mounted system into an eye of the wearer. The head-mounted display system can include an optical display that is configured to output light to form an image. The system may include one or more waveguides that are disposed to receiving the light from the display. A variable power reflector can be disposed on the forward side of the one or more waveguides. The reflector can be configured to have an optical power that is adjustable upon application of an electrical signal.
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