Patents by Inventor Dianmin Lin
Dianmin Lin has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20240085705Abstract: An example a head-mounted display device includes a light projector and an eyepiece. The eyepiece is arranged to receive light from the light projector and direct the light to a user during use of the wearable display system. The eyepiece includes a waveguide having an edge positioned to receive light from the display light source module and couple the light into the waveguide. The waveguide includes a first surface and a second surface opposite the first surface. The waveguide includes several different regions, each having different grating structures configured to diffract light according to different sets of grating vectors.Type: ApplicationFiled: November 20, 2023Publication date: March 14, 2024Inventors: Dianmin LIN, Pierre ST. HILAIRE
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Patent number: 11899216Abstract: An example a head-mounted display device includes a light projector and an eyepiece. The eyepiece is arranged to receive light from the light projector and direct the light to a user during use of the wearable display system. The eyepiece includes a waveguide having an edge positioned to receive light from the display light source module and couple the light into the waveguide. The waveguide includes a first surface and a second surface opposite the first surface. The waveguide includes several different regions, each having different grating structures configured to diffract light according to different sets of grating vectors.Type: GrantFiled: December 7, 2022Date of Patent: February 13, 2024Assignee: Magic Leap, Inc.Inventors: Dianmin Lin, Pierre St. Hilaire
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Patent number: 11885969Abstract: An example head-mounted display device includes a plurality of optical elements in optical communication. The optical elements are configured to project an image in a field of view of a user wearing the head-mounted display device. A first optical element is configured to receive light from a second optical element. The first optical element defines a grating at along a periphery of the first optical element. The grating includes a plurality of protrusions extending from a base portion of the first optical element. The protrusions include a first material having a first optical dispersion profile for visible wavelengths of light. The grating also includes a second material disposed between at least some of the plurality of protrusions along the base portion of the first optical element. The second material has a second optical dispersion profile for visible wavelengths of light.Type: GrantFiled: March 10, 2022Date of Patent: January 30, 2024Assignee: Magic Leap, Inc.Inventors: Pierre St. Hilaire, Mohammadreza Khorasaninejad, Dianmin Lin
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Publication number: 20230417980Abstract: A display system comprises a waveguide having light incoupling or light outcoupling optical elements formed of a metasurface. The metasurface is a multilevel (e.g., bi-level) structure having a first level defined by spaced apart protrusions formed of a first optically transmissive material and a second optically transmissive material between the protrusions. The metasurface also includes a second level formed by the second optically transmissive material. The protrusions on the first level may be patterned by nanoimprinting the first optically transmissive material, and the second optically transmissive material may be deposited over and between the patterned protrusions. The widths of the protrusions and the spacing between the protrusions may be selected to diffract light, and a pitch of the protrusions may be 10-600 nm.Type: ApplicationFiled: September 11, 2023Publication date: December 28, 2023Inventors: Dianmin Lin, Mauro Melli, Pierre St. Hilaire, Christophe Peroz, Evgeni Poliakov
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Publication number: 20230418074Abstract: An optical system comprises an optically transmissive substrate comprising a multilevel metasurface which comprises a grating comprising a plurality of multilevel unit cells. Each unit cell comprises, on a lowermost level, a laterally-elongated first lowermost level nanobeam having a first width and a laterally-elongated second lowermost level nanobeam having a second width larger than the first width. Each unit cell further comprises, on an uppermost level, a laterally-elongated first uppermost level nanobeam above the first lowermost level nanobeam and a laterally-elongated second uppermost level nanobeam above the second lowermost level nanobeam.Type: ApplicationFiled: September 8, 2023Publication date: December 28, 2023Inventors: Dianmin Lin, Mauro Melli, Pierre St. Hilaire, Christophe Peroz, Evgeni Poliakov
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Patent number: 11815853Abstract: An optical device includes an optical component (e.g., a polarization volume hologram, a geometric phase device, or a polarization-insensitive diffractive optical element) having a uniform thickness and configured to modify a wavefront of a light beam that includes light in two or more wavelengths visible to human eyes, where the optical component has a chromatic aberration between the two or more wavelengths. The optical device also includes a metasurface on the optical component. The metasurface includes a plurality of nanostructures configured to modify respective phases of incident light at a plurality of regions of the metasurface, where the plurality of nanostructures is configured to, at each region of the plurality of regions, add a respective phase delay for each of the two or more wavelengths to correct the chromatic aberration between the two or more wavelengths.Type: GrantFiled: May 17, 2021Date of Patent: November 14, 2023Assignee: META PLATFORMS TECHNOLOGIES, LLCInventors: Hao Yu, Dianmin Lin, Lu Lu, Xiayu Feng, Mengfei Wang, Barry David Silverstein
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Publication number: 20230341597Abstract: An eyepiece waveguide for an augmented reality display system. The eyepiece waveguide can include an optically transmissive substrate with an input coupling grating (ICG) region. The ICG region can receive a beam of light and couple the beam into the substrate in a guided propagation mode. The eyepiece waveguide can also include a combined pupil expander-extractor (CPE) grating region that receives the beam of light from the ICG region and alters the propagation direction of the beam with a first interaction and out-couples the beam with a second interaction. The diffractive features of the CPE grating region can be arranged in rows and columns of alternating higher and lower quadrilateral surfaces or the diffractive features can comprise diamond shaped raised ridges. The eyepiece waveguide can also include one or more recycler grating regions.Type: ApplicationFiled: September 14, 2021Publication date: October 26, 2023Inventors: Victor Kai LIU, Samarth BHARGAVA, Brandon Michael-James BORN, Dianmin LIN, Pierre ST. HILAIRE, Vikramjit SINGH, Kang LUO
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Patent number: 11796818Abstract: 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 ?m. 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 ?m where the refractive index is 3.3 or less.Type: GrantFiled: May 20, 2022Date of Patent: October 24, 2023Assignee: Magic Leap, Inc.Inventors: Dianmin Lin, Mauro Melli, Pierre St. Hilaire, Christophe Peroz, Evgeni Poliakov
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Patent number: 11789198Abstract: A display system comprises a waveguide having light incoupling or light outcoupling optical elements formed of a metasurface. The metasurface is a multilevel (e.g., bi-level) structure having a first level defined by spaced apart protrusions formed of a first optically transmissive material and a second optically transmissive material between the protrusions. The metasurface also includes a second level formed by the second optically transmissive material. The protrusions on the first level may be patterned by nanoimprinting the first optically transmissive material, and the second optically transmissive material may be deposited over and between the patterned protrusions. The widths of the protrusions and the spacing between the protrusions may be selected to diffract light, and a pitch of the protrusions may be 10-600 nm.Type: GrantFiled: January 24, 2022Date of Patent: October 17, 2023Assignee: Magic Leap, Inc.Inventors: Dianmin Lin, Mauro Melli, Pierre St. Hilaire, Christophe Peroz, Evgeni Poliakov
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Publication number: 20230273450Abstract: Antireflection coatings for metasurfaces are described herein. In some embodiments, the metasurface may include a substrate, a plurality of nanostructures thereon, and an antireflection coating disposed over the nanostructures. The antireflection coating may be a transparent polymer, for example a photoresist layer, and may have a refractive index lower than the refractive index of the nanostructures and higher than the refractive index of the overlying medium (e.g., air). Advantageously, the antireflection coatings may reduce or eliminate ghost images in an augmented reality display in which the metasurface is incorporated.Type: ApplicationFiled: May 2, 2023Publication date: August 31, 2023Inventors: Dianmin Lin, Michael Anthony Klug, Pierre St. Hilaire, Mauro Melli, Christophe Peroz, Evgeni Poliakov
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Patent number: 11736535Abstract: Methods, systems, and storage media for initiating communication between artificial reality devices are disclosed. Exemplary implementations may: enable a discovery setting by a first user wearing a first artificial reality device; detect a presence of at least a second user wearing a second artificial reality device; determine a familiarity level of the first user with the second user; and in response to the familiarity level breaching a familiarity threshold, initiate a call with the second artificial reality device by the first artificial reality device, the call including an interaction in an artificial reality environment accessed via the first artificial reality device and the second artificial reality device.Type: GrantFiled: October 12, 2021Date of Patent: August 22, 2023Assignee: Meta Platforms Technologies, LLCInventors: Nava K Balsam, Michaela Warnecke, Dianmin Lin, Ana Garcia Puyol
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Patent number: 11681153Abstract: Antireflection coatings for metasurfaces are described herein. In some embodiments, the metasurface may include a substrate, a plurality of nanostructures thereon, and an antireflection coating disposed over the nanostructures. The antireflection coating may be a transparent polymer, for example a photoresist layer, and may have a refractive index lower than the refractive index of the nanostructures and higher than the refractive index of the overlying medium (e.g., air). Advantageously, the antireflection coatings may reduce or eliminate ghost images in an augmented reality display in which the metasurface is incorporated.Type: GrantFiled: January 24, 2018Date of Patent: June 20, 2023Assignee: Magic Leap, Inc.Inventors: Dianmin Lin, Michael Anthony Klug, Pierre St. Hilaire, Mauro Meili, Christophe Peroz, Evgeni Poliakov
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Publication number: 20230185091Abstract: A waveguide is provided. The waveguide includes a substrate having two outer surfaces for propagating a beam of light in the substrate by reflecting the beam from the two outer surfaces. The waveguide includes at least one polarization volume hologram (PVH) grating to couple light in and/or out of the waveguide. The PVH grating may be a multi-layer PVH grating with graded birefringence.Type: ApplicationFiled: December 13, 2021Publication date: June 15, 2023Inventors: Sihui He, Maxwell Parsons, Fenglin Peng, Miaomiao Xu, Yang Yang, Yu Shi, Dianmin Lin
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Publication number: 20230168425Abstract: 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.Type: ApplicationFiled: January 15, 2023Publication date: June 1, 2023Inventors: Mauro Melli, Mohammadreza Khorasaninejad, Christophe Peroz, Pierre St. Hilaire, Dianmin Lin
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Publication number: 20230129889Abstract: An eyepiece includes a planar waveguide having a front surface and a back surface. The eyepiece also includes a grating coupled to the back surface of the planar waveguide and configured to diffract a first portion of the light propagating in the planar waveguide out of a plane of the planar waveguide toward a first direction and to diffract a second portion of the light propagating in the planar waveguide out of the plane of the planar waveguide toward a second direction opposite to the first direction and a wavelength-selective reflector coupled to the front surface of the planar waveguide. The wavelength-selective reflector comprises a multilevel metasurface comprising a plurality of spaced apart protrusions having a pitch and formed of a first optically transmissive material and a second optically transmissive material disposed between the spaced apart protrusions.Type: ApplicationFiled: December 27, 2022Publication date: April 27, 2023Applicant: Magic Leap, Inc.Inventors: Brian T. Schowendgerdt, Dianmin Lin, Pierre St. Hilaire
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Publication number: 20230111835Abstract: Methods, systems, and storage media for eye tracking in artificial reality (e.g., virtual reality, augmented reality, mixed reality, etc.) headsets are disclosed. Exemplary implementations may: generate a simulated environment for a user through an artificial reality headset; track an eye of the user through an eye sensor responsive to the artificial reality headset being worn by the user; detect a physical aspect of the eye through the eye sensor indicative of an eye malady; and adjust a display setting of the artificial reality headset based at least in part on the detected physical aspect of the eye.Type: ApplicationFiled: October 12, 2021Publication date: April 13, 2023Inventors: Nava K. Balsam, Michaela Warnecke, Aminata Dia, Dianmin Lin
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Publication number: 20230096804Abstract: An example a head-mounted display device includes a light projector and an eyepiece. The eyepiece is arranged to receive light from the light projector and direct the light to a user during use of the wearable display system. The eyepiece includes a waveguide having an edge positioned to receive light from the display light source module and couple the light into the waveguide. The waveguide includes a first surface and a second surface opposite the first surface. The waveguide includes several different regions, each having different grating structures configured to diffract light according to different sets of grating vectors.Type: ApplicationFiled: December 7, 2022Publication date: March 30, 2023Inventors: Dianmin Lin, Pierre St. Hilaire
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Patent number: 11604310Abstract: 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.Type: GrantFiled: May 20, 2020Date of Patent: March 14, 2023Assignee: Magic Leap, Inc.Inventors: Brian T. Schowengerdt, Dianmin Lin, Pierre St. Hilaire
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Patent number: 11579353Abstract: 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.Type: GrantFiled: November 4, 2020Date of Patent: February 14, 2023Assignee: Magic Leap, Inc.Inventors: Mauro Melli, Mohammadreza Khorasaninejad, Christophe Peroz, Pierre St. Hilaire, Dianmin Lin
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Patent number: 11543664Abstract: An example a head-mounted display device includes a light projector and an eyepiece. The eyepiece is arranged to receive light from the light projector and direct the light to a user during use of the wearable display system. The eyepiece includes a waveguide having an edge positioned to receive light from the display light source module and couple the light into the waveguide. The waveguide includes a first surface and a second surface opposite the first surface. The waveguide includes several different regions, each having different grating structures configured to diffract light according to different sets of grating vectors.Type: GrantFiled: October 28, 2020Date of Patent: January 3, 2023Assignee: Magic Leap, Inc.Inventors: Dianmin Lin, Pierre St. Hilaire