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公开(公告)号：US11880103B2
公开(公告)日：2024-01-23
申请号：US17709791
申请日：2022-03-31
Applicant: Meta Platforms Technologies, LLC
Inventor： Jasmine Soria Sears , Afsoon Jamali , Yun-Han Lee
IPC: G02F1/1333 , G02F1/137 , G02F1/01 , G02B27/01
CPC classification number: G02F1/133382 , G02F1/0126 , G02F1/137 , G02F1/133308 , G02B27/0172 , G02F2202/14
Abstract: An optical element includes a first boundary layer and a second boundary layer. A solution is disposed between the first boundary layer and the second boundary layer. The solution includes liquid crystals co-mingled with oblong photochromic dye molecules. The photochromic dye molecules are matched to the liquid crystals to offset a decrease in absorption of the photochromic dye molecules in response to a temperature increase of the photochromic dye molecules.
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公开(公告)号：US11852827B2
公开(公告)日：2023-12-26
申请号：US17962270
申请日：2022-10-07
Applicant: Meta Platforms Technologies, LLC
Inventor： Afsoon Jamali , Sandro Pintz , Kurt Jenkins , Christopher Stipe
IPC: G02B27/01 , G02F1/1335 , G02F1/01 , G06F1/16 , G02F1/139 , G02F1/1334
CPC classification number: G02B27/0172 , G02F1/0136 , G02F1/133526 , G02F1/133536 , G06F1/163 , G02B27/0176 , G02B2027/0118 , G02B2027/0161 , G02B2027/0178 , G02F1/1396 , G02F1/13345
Abstract: A device is provided. The device includes a reflective polarizer configured to selectively reflect or transmit a polarized light based on a polarization of the polarized light. The device also includes a display element disposed at a first side of the reflective polarizer, and configured to output a first image light representing a virtual image. The device also includes a polarization switch disposed between the display element and the reflective polarizer, and configured to switch or maintain a polarization of the first image light. The device further includes an active dimming device disposed at a second side of the reflective polarizer, and configured to provide an adjustable transmittance of an input light.
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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：US11686942B2
公开(公告)日：2023-06-27
申请号：US16730293
申请日：2019-12-30
Applicant: Meta Platforms Technologies, LLC
Inventor： Yang Zhao , Afsoon Jamali , Junren Wang , Wai Sze Tiffany Lam , Lu Lu , Douglas Robert Lanman
CPC classification number: G02B27/0172 , G02F1/13718 , G03B13/36
Abstract: A display system includes a source of unpolarized image light, and a stack of polarization-selective optical elements operable to switchably convert the unpolarized image light into two orthogonally polarized light beams, each of which being switchable in at least one beam characteristic. An output polarizer selects one of the two orthogonally polarized light beams for providing to a user. A depolarizer may be disposed between an electronic display emitting polarized light and the stack. The depolarizer may be in the form of an LC bilayer with randomized in-plane optic axis.
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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：US11435641B1
公开(公告)日：2022-09-06
申请号：US17137916
申请日：2020-12-30
Applicant: META PLATFORMS TECHNOLOGIES, LLC
Inventor： Afsoon Jamali , Arman Boromand , Jasmine Soria Sears , Sandro Pintz
Abstract: A switchable optical retardation device includes a switchable retardation element including liquid crystals and an electrical driver circuit. While in a first state, the switchable retardation element modifies light transmitted through the switchable retardation element by causing a phase shift of a first retardation angle. While in a second state, the switchable retardation element modifies the light transmitted through the switchable retardation element by causing a phase shift of a second retardation angle distinct from the first retardation angle. The electrical driver circuit provides a first voltage for placing the switchable retardation element in the first state and a second voltage for placing the switchable retardation element in the second state. The first voltage is greater than the second voltage, the second voltage is a non-zero voltage, and the electrical driver circuit alternatingly provides the first voltage and the second voltage with a predefined frequency.
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公开(公告)号：US10545344B2
公开(公告)日：2020-01-28
申请号：US15599828
申请日：2017-05-19
Applicant: Kent State University , Intel Corporation
Inventor： Philip Bos , Afsoon Jamali , Anders Grunnet-Jepson , Achintya K. Bhowmik
Abstract: A stereoscopic display device is provided for displaying a three-dimensional (3D) image as viewed by eyes consisting of a left eye and a right eye. In the display device, a single display screen, or separate left and right display screens, present a left image to the left eye but not the right eye, and present a right image to the right eye but not the left eye. A gaze distance tracker is configured to track gaze distance of the eyes. Variable-power lenses include a left variable-power lens arranged to provide eye accommodation for the left eye, and a right variable-power lens arranged to provide eye accommodation for the right eye. An electronic eye accommodation controller is configured to control the power of the variable power lenses to allow the image from the display to be focused on the retina, while the biological eye lens is accommodated to the gaze distance.
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公开(公告)号：US20170336638A1
公开(公告)日：2017-11-23
申请号：US15599828
申请日：2017-05-19
Applicant: Kent State University , Intel Corporation
Inventor： Philip Bos , Afsoon Jamali , Anders Grunnet-Jepson , Achintya K. Bhowmik
CPC classification number: G02B27/0172 , A63F2300/8082 , G02B27/0093 , G02B2027/0134 , G02B2027/0138 , G02B2027/0187
Abstract: A stereoscopic display device is provided for displaying a three-dimensional (3D) image as viewed by eyes consisting of a left eye and a right eye. In the display device, a single display screen, or separate left and right display screens, present a left image to the left eye but not the right eye, and present a right image to the right eye but not the left eye. A gaze distance tracker is configured to track gaze distance of the eyes. Variable-power lenses include a left variable-power lens arranged to provide eye accommodation for the left eye, and a right variable-power lens arranged to provide eye accommodation for the right eye. An electronic eye accommodation controller is configured to control the power of the variable power lenses to allow the image from the display to be focused on the retina, while the biological eye lens is accommodated to the gaze distance.
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公开(公告)号：US20240004107A1
公开(公告)日：2024-01-04
申请号：US18214057
申请日：2023-06-26
Applicant: KENT STATE UNIVERSITY
Inventor： Afsoon Jamali , Amit Bhowmick , Douglas Bryant , Sandro Pintz , Phillip Bos
CPC classification number: G02B3/0087 , G02B27/0172 , G02B3/14 , G02F1/294 , G02B2003/0093
Abstract: A gradient refractive index (GRIN) lens includes a transparent central disk and transparent annular segments, including central annular segments and peripheral annular segments. The central disk and each annular segment has a continuous optical phase profile at a design wavelength along a radial direction extending outward from a center of the central disk. An optical phase discontinuity is present at the interface between the central disk and the innermost central annular segment and at the interface between each pair of adjacent annular segments. Radial widths of the central annular segments decrease with increasing distance away from the center of the central disk. The peripheral annular segments have optical phase profiles for the design wavelength that are linear or have maximum first derivatives that are constant or become smaller with increasing distance of the peripheral annular segments away from the center of the central disk.
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