-
公开(公告)号：US12117687B1
公开(公告)日：2024-10-15
申请号：US18302556
申请日：2023-04-18
Applicant: Meta Platforms Technologies, LLC
Inventor： Hsien-Hui Cheng , Michael Escuti , Xiayu Feng , Mengfei Wang , Steven John Robbins , Zhexin Zhao , Lu Lu
IPC: G02F1/1335 , G02F1/13363 , G02F1/1337 , G02F1/137 , G03H1/02
CPC classification number: G02F1/133524 , G02F1/133507 , G02F1/13355 , G02F1/133636 , G02F1/133757 , G02F1/13706 , G03H1/0248
Abstract: A device is provided. The device includes a light guide configured to guide a first light propagating therein. The device also includes an optical film coupled with the light guide, optically anisotropic molecules in the optical film being configured with an in-plane orientation pattern having an in-plane pitch along the predetermined in-plane direction. Within the in-plane pitch of the in-plane orientation pattern, azimuthal angles of the optically anisotropic molecules are configured to vary nonlinearly along the predetermined in-plane direction. The optical film is configured to diffract the first light as a plurality of second lights at a plurality of locations of the optical film, with a plurality of predetermined, different diffraction efficiencies.
-
公开(公告)号：US12078815B1
公开(公告)日：2024-09-03
申请号：US17524601
申请日：2021-11-11
Applicant: META PLATFORMS TECHNOLOGIES, LLC
Inventor： Scott Charles McEldowney , Lu Lu , Babak Amirsolaimani
CPC classification number: G02B27/286 , G02B5/3016 , G02B5/3083 , G02B5/32 , G02B27/0172 , G03H1/0248 , G02B3/10
Abstract: A lens may include optically anisotropic molecules arranged in helical structures. The lens may include a first portion, a second portion located around the first portion, and a third portion located around the second portion. The first portion may include a first helical structure having a first helical pitch. The second portion may include a second helical structure having a second helical pitch distinct from the first helical pitch. The third portion may include a third helical structure having a third helical pitch distinct from the first helical pitch and the second helical pitch. The second helical pitch may have a length that is between a length of the first helical pitch and a length of the third helical pitch.
-
公开(公告)号：US20240184124A1
公开(公告)日：2024-06-06
申请号：US18237332
申请日：2023-08-23
Applicant: Meta Platforms Technologies, LLC
Inventor： Ali Altaqui , Xuan Wang , Lu Lu , Michael Escuti , Chulwoo Oh , Hsien-Hui Cheng , Jihwan Kim , Yuge Huang , Yun-Han Lee , Brian Wheelwright
CPC classification number: G02B27/0179 , G02B5/3083 , G02B27/0172 , G02B27/0922 , G02B27/0955 , G02F1/0136 , G02B2027/0185
Abstract: A multi-focal system includes a display pixel array, a pixelated polarization array, and a Pancharatnam-Berry phase (PBP) lens. The display pixel array includes a first display pixels generating first display light and a second display pixels generating second display light. The pixelated polarization array has first pixels and second pixels. The first pixels are aligned with the first display pixels to generate a first polarized light having a first polarization orientation. The second pixels are aligned with the second display pixels to generate a second polarized light having a second polarization orientation different from the first polarization orientation. The PBP lens is configured to focus the first polarized light having the first polarization orientation to a first focal length and focus the second polarized light having the second polarization orientation to a second focal length that is greater than the first focal length.
-
公开(公告)号：US11880113B2
公开(公告)日：2024-01-23
申请号：US17736085
申请日：2022-05-03
Applicant: Meta Platforms Technologies, LLC
Inventor： Lu Lu , Fenglin Peng , Douglas Robert Lanman
Abstract: A device includes a first-type liquid crystal (LC) lens configured to provide a first optical power that is variable in a first step resolution. The device also includes a second-type LC lens coupled with the first-type LC lens, and configured to provide a second optical power that is variable in a second step resolution. The first step resolution is smaller than the second step resolution. A total optical power of the device is a sum of the first optical power and the second optical power, and is variable in the first step resolution.
-
公开(公告)号：US11860573B1
公开(公告)日：2024-01-02
申请号：US17229844
申请日：2021-04-13
Applicant: Meta Platforms Technologies, LLC
Inventor： Mengfei Wang , Junren Wang , Yun-Han Lee , Stephen Choi , Lu Lu , Barry David Silverstein
CPC classification number: G03H1/0402 , G02B27/286 , G03H1/0248 , G03H1/0465 , G03H2001/0216 , G03H2001/0413 , G03H2001/0439 , G03H2001/0441 , G03H2223/20 , G03H2223/22 , G03H2223/23 , G03H2223/24 , G03H2227/05
Abstract: A system includes a mask configured to forwardly diffract an input beam as a first set of two polarized beams. The system also includes a polarization conversion element configured to convert the first set of two polarized beams into a second set of two polarized beams having opposite handednesses. The two polarized beams having opposite handednesses interfere with one another to generate a polarization interference pattern.
-
Patent Agency Ranking
公开(公告)号：US11846779B2
公开(公告)日：2023-12-19
申请号：US17495750
申请日：2021-10-06
Applicant: META PLATFORMS TECHNOLOGIES, LLC
Inventor： Afsoon Jamali , Wai Sze Tiffany Lam , Brian Wheelwright , Lu Lu , Douglas Robert Lanman
CPC classification number: G02B27/0172 , G02B5/1828 , G02B5/1842 , G02B5/3083 , G02B26/106 , G02B27/0093 , G02F1/29 , G02B2027/0123 , G02B2027/0178 , G02F1/294 , G02F2203/07
Abstract: An optical assembly includes a plurality of successive optical stages that are configured to transmit light at a variable overall optical power by configuring one or more stages of the successive optical stages. A respective optical stage of the successive optical stages includes an active optical element that is configurable to be in a first state at a first time and a second state at a second time that is distinct from the first time. The active optical element, in the first state, has a first respective optical power for light of a first polarization and a second respective optical power, that is different from the first respective optical power, for light of a second polarization that is orthogonal to the first polarization. The active optical element, in the second state, has a third optical power for light of the first polarization and light of the second polarization.
-
公开(公告)号：US11815853B2
公开(公告)日：2023-11-14
申请号：US17322453
申请日：2021-05-17
Applicant: Meta Platforms Technologies, LLC
Inventor： Hao Yu , Dianmin Lin , Lu Lu , Xiayu Feng , Mengfei Wang , Barry David Silverstein
CPC classification number: G03H1/0248 , G02B27/0025 , G02B27/0172 , G03H1/18 , G02B2027/0174 , G02B2027/0178 , G03H2001/185
Abstract: 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.
-
公开(公告)号：US11675188B2
公开(公告)日：2023-06-13
申请号：US17474362
申请日：2021-09-14
Applicant: Meta Platforms Technologies, LLC
Inventor： Yun-Han Lee , Lu Lu , Mengfei Wang , Fenglin Peng , Junren Wang
CPC classification number: G02B27/0037 , G02B5/32 , G02B27/0172 , G02B27/0179 , G03H1/0248 , G02B2027/0109 , G02B2027/0116 , G02B2027/0174 , G02B2027/0178 , G02B2027/0187 , G03H2001/0264
Abstract: A system is provided. The system includes a light source configured to emit an infrared light to illuminate an eye of a user. The system includes a grating disposed facing the eye and including a birefringent material film configured with a uniform birefringence lower than or equal to 0.1. The grating is configured to diffract the infrared light reflected from the eye, and transmit a visible light from a real world environment toward the eye, with a diffraction efficiency less than a predetermined threshold. The system includes an optical sensor configured to receive the diffracted infrared light and generate an image of the eye based on the diffracted infrared light.
-
公开(公告)号：US11635669B1
公开(公告)日：2023-04-25
申请号：US17005247
申请日：2020-08-27
Applicant: Meta Platforms Technologies, LLC
Inventor： Lu Lu , Hao Yu , Mengfei Wang , Junren Wang , Yun-Han Lee , Nicholas John Diorio , Barry David Silverstein
IPC: G02F1/29 , G02F1/1337
Abstract: A device includes a first substrate and a second substrate. The device also includes a birefringent medium layer disposed between the first substrate and the second substrate. Orientations of directors of optically anisotropic molecules included in the birefringent medium layer varying periodically with an in-plane pitch tunable by an external field to adjust a diffraction angle of a light beam diffracted by the birefringent medium layer.
-
公开(公告)号：US11624967B1
公开(公告)日：2023-04-11
申请号：US17834818
申请日：2022-06-07
Applicant: Meta Platforms Technologies, LLC
Inventor： Lu Lu , Andrew John Ouderkirk , Scott Charles McEldowney
Abstract: A hybrid lens includes a transmissive adaptive liquid lens and an optical element including liquid crystals. The adaptive liquid lens includes a layer of optical fluid on a substrate. A focal length of the adaptive liquid lens is adjustable. The optical element including liquid crystals is optically coupled with the adaptive liquid lens. The optical element including liquid crystals is configured to adjust a refractive index across the optical element including liquid crystals in conjunction with adjusting the focal length of the adaptive liquid lens so that the optical element reduces optical artifacts caused by the adaptive liquid lens.
-
-
-
-
-
-
-
-
-
Search Results
56
records
(took 0.034 seconds)
