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公开(公告)号：US12124052B2
公开(公告)日：2024-10-22
申请号：US17184039
申请日：2021-02-24
申请人： Magic Leap, Inc.
CPC分类号： G02B27/4205 , G02B27/0081 , G02B27/0172 , H04N9/3155 , G02B2027/0123
摘要： An eyepiece for projecting an image light field to an eye of a viewer for forming an image of virtual content includes a waveguide, a light source configured to deliver a light beam to be incident on the waveguide, a controller coupled to the light source and configured to modulate an intensity of the light beam in a plurality of time slots, a dynamic input coupling grating (ICG) configured to, for each time slot, diffract a respective portion of the light beam into the waveguide at a respective total internal reflection (TIR) angle corresponding to a respective field angle, and an outcoupling diffractive optical element (DOE) configured to diffract each respective portion of the light beam out of the waveguide toward the eye at the respective field angle, thereby projecting the light field to the eye of the viewer.
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公开(公告)号：US11686944B2
公开(公告)日：2023-06-27
申请号：US16860756
申请日：2020-04-28
申请人： Magic Leap, Inc.
发明人： Lionel Ernest Edwin , Ivan Li Chuen Yeoh , Brian T. Schowengerdt , Kevin Richard Curtis , William Hudson Welch , Pierre St. Hilaire , Hui-Chuan Cheng
CPC分类号： G02B27/0172 , G02B6/0016 , G02B6/0023 , G02B6/0038 , G02B2027/011 , G02B2027/0138 , G02B2027/0147 , G02B2027/0178
摘要： A method and system for increasing dynamic digitized wavefront resolution, i.e., the density of output beamlets, can include receiving a single collimated source light beam and producing multiple output beamlets spatially offset when out-coupled from a waveguide. The multiple output beamlets can be obtained by offsetting and replicating a collimated source light beam. Alternatively, the multiple output beamlets can be obtained by using a collimated incoming source light beam having multiple input beams with different wavelengths in the vicinity of the nominal wavelength of a particular color. The collimated incoming source light beam can be in-coupled into the eyepiece designed for the nominal wavelength. The input beams with multiple wavelengths take different paths when they undergo total internal reflection in the waveguide, which produces multiple output beamlets.
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公开(公告)号：US11579353B2
公开(公告)日：2023-02-14
申请号：US17089546
申请日：2020-11-04
申请人： Magic Leap, Inc.
发明人： Mauro Melli , Mohammadreza Khorasaninejad , Christophe Peroz , Pierre St. Hilaire , Dianmin Lin
摘要： Display devices include waveguides with metasurfaces as in-coupling and/or out-coupling optical elements. The metasurfaces may be formed on a surface of the waveguide and may include a plurality or an array of sub-wavelength-scale (e.g., nanometer-scale) protrusions. Individual protrusions may include horizontal and/or vertical layers of different materials which may have different refractive indices, allowing for enhanced manipulation of light redirecting properties of the metasurface. Some configurations and combinations of materials may advantageously allow for broadband metasurfaces. Manufacturing methods described herein provide for vertical and/or horizontal layers of different materials in a desired configuration or profile.
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公开(公告)号：US11360306B2
公开(公告)日：2022-06-14
申请号：US16733168
申请日：2020-01-02
申请人： Magic Leap, Inc.
IPC分类号： G02B27/01 , G02B5/30 , H04N13/344 , H04N13/349 , G02B30/35 , G02B5/18
摘要： An optical system comprises an optically transmissive substrate comprising a metasurface which comprises a grating comprising a plurality of unit cells. Each unit cell comprises a laterally-elongated first nanobeam having a first width; and a laterally-elongated second nanobeam spaced apart from the first nanobeam by a gap, the second nanobeam having a second width larger than the first width. A pitch of the unit cells is 10 nm to 1 μm. The heights of the first and the second nanobeams are: 10 nm to 450 nm where a refractive index of the substrate is more than 3.3; and 10 nm to 1 μm where the refractive index is 3.3 or less.
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公开(公告)号：US11281006B2
公开(公告)日：2022-03-22
申请号：US16678894
申请日：2019-11-08
申请人： Magic Leap, Inc.
发明人： Pierre St. Hilaire
IPC分类号： G02B5/18 , G02B27/01 , F21V8/00 , G03H1/02 , G02B5/32 , G02B27/00 , G03H1/28 , G02B6/38 , G03H1/22
摘要： A head worn imaging system includes a light source configured to generate a light beam. The system also includes a light guiding optical element having a thickness between 0.1 and 1.5 mm and configured to propagate at least a portion of the light beam by total internal reflection. The system further includes an entry portion and an exit portion of the light guiding optical element configured to selectively allow light addressing the exit portion to exit the light guiding optical element based on the angle of incidence of the light, the radius of curvature of the light and/or the wavelength of the light.
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公开(公告)号：US11067732B2
公开(公告)日：2021-07-20
申请号：US15931481
申请日：2020-05-13
申请人： Magic Leap, Inc.
发明人： Michael Anthony Klug , Brian T. Schowengerdt , Michael Nevin Miller , Vikramjit Singh , Christophe Peroz , Pierre St. Hilaire , Jie Sun
IPC分类号： B05D1/38 , G02B5/30 , G02B27/01 , F21V8/00 , G02B5/18 , G02B26/10 , G02B27/42 , G02B27/00 , G02B27/10 , G02F1/13 , G02B1/00 , G02B27/28
摘要： Methods of manufacturing a liquid crystal device including depositing a layer of liquid crystal material on a substrate and imprinting a pattern on the layer of liquid crystal material using an imprint template are disclosed. The liquid crystal material can be jet deposited. The imprint template can include surface relief features, Pancharatnam-Berry Phase Effect (PBPE) structures or diffractive structures. The liquid crystal device manufactured by the methods described herein can be used to manipulate light, such as for beam steering, wavefront shaping, separating wavelengths and/or polarizations, and combining different wavelengths and/or polarizations.
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公开(公告)号：US10725223B2
公开(公告)日：2020-07-28
申请号：US15683644
申请日：2017-08-22
申请人： Magic Leap, Inc.
IPC分类号： G02B27/01 , F21V8/00 , H04N9/31 , G06F3/01 , G06F3/147 , G09G3/00 , G09G3/20 , G02B7/00 , G02B5/30 , G02B27/00 , G02B27/28 , G02B27/10 , G02C5/16 , G02C11/00 , G06F1/16 , G06F1/20 , H05K7/20 , G02B5/18 , G02B6/34 , G02B6/293 , G02B27/30
摘要： An eyepiece for projecting an image to an eye of a viewer includes a waveguide configured to propagate light in a first wavelength range, and a grating coupled to a back surface of the waveguide. The grating is configured to diffract a first portion of the light propagating in the waveguide out of a plane of the waveguide toward a first direction, and to diffract a second portion of the light propagating in the waveguide out of the plane of the waveguide toward a second direction opposite to the first direction. The eyepiece furthers include a wavelength-selective reflector coupled to a front surface of the waveguide. The wavelength selective reflector is configured to reflect light in the first wavelength range and transmit light outside the first wavelength range, such that the wavelength-selective reflector reflects at least part of the second portion of the light back toward the first direction.
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公开(公告)号：US10678055B2
公开(公告)日：2020-06-09
申请号：US15826315
申请日：2017-11-29
申请人： Magic Leap, Inc.
发明人： Lionel Ernest Edwin , Ivan Li Chuen Yeoh , Brian T. Schowengerdt , Kevin Richard Curtis , William Hudson Welch , Pierre St. Hilaire , Hui-Chuan Cheng
摘要： A method and system for increasing dynamic digitized wavefront resolution, i.e., the density of output beamlets, can include receiving a single collimated source light beam and producing multiple output beamlets spatially offset when out-coupled from a waveguide. The multiple output beamlets can be obtained by offsetting and replicating a collimated source light beam. Alternatively, the multiple output beamlets can be obtained by using a collimated incoming source light beam having multiple input beams with different wavelengths in the vicinity of the nominal wavelength of a particular color. The collimated incoming source light beam can be in-coupled into the eyepiece designed for the nominal wavelength. The input beams with multiple wavelengths take different paths when they undergo total internal reflection in the waveguide, which produces multiple output beamlets.
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公开(公告)号：US10564533B2
公开(公告)日：2020-02-18
申请号：US15927807
申请日：2018-03-21
申请人： Magic Leap, Inc.
发明人： Jahja Trisnadi , Pierre St. Hilaire , Hui-Chuan Cheng , Clinton Carlisle , Michael Anthony Klug , Kevin Richard Curtis
摘要： Examples of light projector systems for directing input light from a light source to a spatial light modulator are provided. For example, an optical device is disclosed which includes a first surface having a diffractive optical element, a second surface normal to the first surface, and a third surface arranged at an angle to the second surface. The third surface may be a beam splitting surface that is reflective to light of a first state and transmissive to light of a second state. The diffractive optical element may receive an input beam made up of light having the first state, and convert the input beam into at least a first diffracted beam at a first diffraction angle such that the first diffracted beam is directed toward the third surface and is reflected by the third surface in a direction substantially parallel to the first surface.
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公开(公告)号：US20170248750A1
公开(公告)日：2017-08-31
申请号：US15442564
申请日：2017-02-24
申请人： Magic Leap, Inc.
摘要： In some embodiments, a display system is provided. The display system comprises a plurality of light pipes and a plurality of light sources configured to emit light into the light pipes. The display system also comprises a spatial light modulator configured to modulate light received from the light pipes to form images. The display system may also comprise one or more waveguides configured to receive modulated light from the spatial light modulator and to relay that light to a viewer.
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