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公开(公告)号：US20240036432A1
公开(公告)日：2024-02-01
申请号：US18162175
申请日：2023-01-31
Applicant: Meta Platforms Technologies, LLC
Inventor： Afsoon Jamali , Changwon Jang , Zhimin Shi , Sho Nakahara , Sandro Pintz , Amit Bhowmick
IPC: G02F1/29
CPC classification number: G02F1/29 , G02F2201/122 , G02F2202/16
Abstract: A device includes a primary electrode, a secondary electrode overlapping at least a portion of the primary electrode, and a liquid crystal layer disposed between the primary electrode and the secondary electrode, where the primary electrode has a spatially variable electrical resistance.
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公开(公告)号：US11782305B1
公开(公告)日：2023-10-10
申请号：US17878442
申请日：2022-08-01
Applicant: Meta Platforms Technologies, LLC
Inventor： Changwon Jang , Afsoon Jamali , Zhimin Shi , Arman Boromand
IPC: G02F1/1335 , G02F1/1334 , G02F1/1343 , G02F1/1341 , G02B27/01 , G02F1/1337
CPC classification number: G02F1/133548 , G02B27/0172 , G02F1/1334 , G02F1/1341 , G02F1/133711 , G02F1/134309 , G02B2027/0178
Abstract: A device is provided. The device includes a first liquid crystal (“LC”) cell configured to modulate an amplitude of a light beam. The device also includes a second LC cell stacked with the first LC cell and configured to modulate a phase of the light beam. The device includes a sandwiched electrode layer disposed between the first LC cell and the second LC cell. The sandwiched electrode layer includes a conductive polymer film configured to function as a common electrode layer for driving at least one of the first LC cell or the second LC cell.
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公开(公告)号：US11747655B2
公开(公告)日：2023-09-05
申请号：US17122311
申请日：2020-12-15
Applicant: Meta Platforms Technologies, LLC
Inventor： Changwon Jang , Afsoon Jamali
CPC classification number: G02F1/0136 , G02F1/1396 , G02F1/13306
Abstract: A device includes a segmented polarization switch including a plurality of polarization switch segments. The device also includes a polarization selective optical element (“PSOE”) optically coupled to the segmented polarization switch and including a plurality of polarization selective segments. The device further includes a controller configured to control the polarization switch segments to operate in a switching state or a non-switching state to control optical states of the polarization selective segments.
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公开(公告)号：US11615647B1
公开(公告)日：2023-03-28
申请号：US16696776
申请日：2019-11-26
Applicant: Meta Platforms Technologies, LLC
Inventor： Gregory Olegovic Andreev , Gang Li , Changwon Jang
Abstract: Systems and method for eye tracking are provided. In some embodiments, the eye tracking system includes a light source configured to generate light and project the light toward an object in a field of view, a detector configured to receive reflected portions of the light from the field of view in order to image the object, and a combiner including a volume grating configured to direct light reflected from different points in a field of view to the light detector. The volume grating includes a plurality of portions along a first area and each of the portions comprising a unique k-vector that is dependent on a respective portion of the field of view.
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Patent Agency Ranking
公开(公告)号：US11598964B2
公开(公告)日：2023-03-07
申请号：US16854528
申请日：2020-04-21
Applicant: Meta Platforms Technologies, LLC
Inventor： Afsoon Jamali , Gang Li , Changwon Jang
Abstract: A freeform varifocal optical assembly includes at least three optical modules including a first plurality of optical elements including Pancharatnam-Berry phase (PBP) lenses, polarization sensitive hologram (PSH) lenses, metamaterials, or combinations thereof. The plurality of optical elements of each optical module include a property associated with a Zernike polynomial. Each of the first and the three optical modules are configurable between a plurality of optical powers. The freeform varifocal optical assembly is configurable to output a predetermined wavefront in response to an input wavefront.
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公开(公告)号：US20240319509A1
公开(公告)日：2024-09-26
申请号：US18734641
申请日：2024-06-05
Applicant: Meta Platforms Technologies, LLC
Inventor： Afsoon Jamali , Changwon Jang , Sandro Pintz
CPC classification number: G02B27/0172 , G02B3/14 , G02B5/3016 , G02B26/004
Abstract: A varifocal liquid lens includes a body filled with two different fluids separated by an interface of a variable curvature across a clear aperture of the varifocal liquid lens. At least one of the first or second fluids is birefringent, such that a refractive index difference between the first and second fluids and resulting optical power of the varifocal liquid lens is dependent on polarization of impinging light. At a first light polarization, the first and second fluids may be matched in refractive index, while at a second, orthogonal light polarization, the first and second fluids may be mismatched in refractive index, whereby the first interface between the first and second fluids may have a variable, non-zero optical power for the second polarization while having a substantially non-variable, zero optical power for the first polarization of light.
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公开(公告)号：US20230324672A1
公开(公告)日：2023-10-12
申请号：US17700761
申请日：2022-03-22
Applicant: META PLATFORMS TECHNOLOGIES, LLC
Inventor： Afsoon Jamali , Spencer Allan Wells , Changwon Jang , Christopher Stipe , Sandro Pintz
CPC classification number: G02B26/0808 , G02B5/3025 , G02B27/0172 , G06F3/013 , G06T7/246 , G02B2027/0178
Abstract: A device is provided. The device includes a first lens configured to provide a first optical power that is variable within a first optical power adjustment range at a first step resolution. The device also includes a second lens coupled with the first lens and including a deformable member that is deformable to vary an optical power of the second lens. The second lens is configured to provide a second optical power that is variable within a second optical power adjustment range at a second step resolution, the second step resolution being smaller than the first step resolution.
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公开(公告)号：US11619815B2
公开(公告)日：2023-04-04
申请号：US16733092
申请日：2020-01-02
Applicant: META PLATFORMS TECHNOLOGIES, LLC
Inventor： Gang Li , Changwon Jang , Giseung Bang , Andrew Maimone , Mengfei Wang , Afsoon Jamali , Lu Lu , Hao Yu
IPC: G02B27/01
Abstract: An optical assembly includes a beam steering device and a holographic optical element. The beam steering device is switchable between different states including a first state and a second state. The beam steering device includes a first polarization-selective optical element and a first tunable optical retarder optically coupled with the first polarization-selective optical element. The holographic optical element is positioned relative to the beam steering device for receiving light from the beam steering device and projecting a first light pattern while the beam steering device is in the first state and a second light pattern distinct from the first light pattern while the beam steering device is in the second state.
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公开(公告)号：US11561510B1
公开(公告)日：2023-01-24
申请号：US16517535
申请日：2019-07-19
Applicant: Meta Platforms Technologies, LLC
Inventor： Andrew Maimone , Gang Li , Afsoon Jamali , Changwon Jang
Abstract: An optical device includes a light source configured to provide a light beam. The optical device includes a light source configured to generate a light beam, and a spatial light modulator (“SLM”) configured to modulate the light beam to provide a hologram for generating a display image. The optical device includes a polarization-selective steering assembly configured to provide a plurality of steering states for the modulated light beam. The optical device includes an image combiner configured to focus the modulated light beam steered by the polarization-selective steering assembly to generate an array of spots at an eye-box of the optical device.
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