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公开(公告)号：US20240210274A1
公开(公告)日：2024-06-27
申请号：US18528587
申请日：2023-12-04
Applicant: Meta Platforms Technologies, LLC
Inventor： Michiel Koen Callens , Babak Amirsolaimani , Jacques Gollier , Sihui He , Yitian Ding , Brian Wheelwright , Weichuan Gao , Tamer Elazhary , Yu Shi
CPC classification number: G01M11/0242 , G02B27/106
Abstract: Optical binocular disparity detection devices may include an optical combiner and a single image sensor. The optical combiner may include a left input for receiving a left image and a right input for receiving a right image. An output of the optical combiner may be configured to direct the left image and the right image out of the optical combiner. The single image sensor may be configured to receive and sense the left image and the right image from the output and to generate data indicative of a disparity between the left image and the right image. Various other related systems and methods are also disclosed.
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公开(公告)号：US20230367124A1
公开(公告)日：2023-11-16
申请号：US18124424
申请日：2023-03-21
Applicant: Meta Platforms Technologies, LLC
Inventor： Sihui He , Xiayu Feng , Renate Eva Klementine Landig , Jacques Gollier
IPC: G02B27/01
CPC classification number: G02B27/0172
Abstract: A lightguide assembly includes a stack of optically separated lightguide plates for conveying image light to an eyebox. At least one lightguide plate of the stack includes an in-coupler configured for switchably in-coupling the image light into the lightguide plate. The switchable in-coupler(s) may be used to time-sequence through different lightguides of the stack, each lightguide carrying a portion of the image such as a field of view portion or a color channel of the image. The time-sequencing through the lightguides allows one to compensate for image offsets due to the lightguide being non-parallel to one another, by providing corresponding offsets in the image portions being carried by different lightguides.
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公开(公告)号：US20230367073A1
公开(公告)日：2023-11-16
申请号：US18076236
申请日：2022-12-06
Applicant: Meta Platforms Technologies, LLC
Inventor： Renate Eva Klementine Landig , Sihui He , Miaomiao Xu
CPC classification number: G02B6/29395 , G02B6/0016
Abstract: A waveguide for conveying image light in a display device is disclosed. The waveguide comprises a waveguide body, an input coupler configured to couple the image light into the waveguide body for propagating the image light within the waveguide body along a zigzag light path, and a plurality of slanted bulk mirrors disposed along the zigzag light path within the waveguide body and having a tunable reflectivity parameter for controlling a spatial distribution of image light portions out-coupled from the waveguide body by the plurality of slanted bulk mirrors. The waveguide may include a plurality of slanted polarization-selective bulk mirrors, and a liquid crystal layer configured to alter the polarization of the image light, the liquid crystal layer being disposed between a backplane electrode and a pixelated electrode configured to control the liquid crystal layer by application of a spatially-varying voltage profile.
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公开(公告)号：US20230251486A1
公开(公告)日：2023-08-10
申请号：US17667504
申请日：2022-02-08
Applicant: Meta Platforms Technologies, LLC
Inventor： Sihui He , Wanli Chi , Ying Geng , Jacques Gollier
CPC classification number: G02B27/0172 , G02B27/0093 , G06F3/013 , G02B6/0016 , G02B2027/0138 , G06T19/006
Abstract: A see-through illuminator for a reflective display panel provides a better image contrast when the illuminator is configured to direct a leakage light beam exiting the lightguide from a side opposing the display panel to propagate non-parallel to an image light formed by reflection of an illuminating light beam from the display panel. An objective lens may concentrate the image and leakage light beams at different locations, enabling a user's eye placed at a location of the image light beam to see the projected image without interference from the leakage light beam.
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公开(公告)号：US12099190B2
公开(公告)日：2024-09-24
申请号：US17549394
申请日：2021-12-13
Applicant: Meta Platforms Technologies, LLC
Inventor： Sihui He , Maxwell Parsons , Fenglin Peng , Miaomiao Xu , Yang Yang , Yu Shi , Dianmin Lin
CPC classification number: G02B27/0172 , G02B5/1842 , G02B5/32 , G02B6/4206 , G02B6/4213 , G02B27/0081 , G02B6/0018 , G02B6/0036 , G02B2027/0174 , G02B2027/0178
Abstract: 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.
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Patent Agency Ranking
6.发明公开公开(公告)号：US20240094611A1
公开(公告)日：2024-03-21
申请号：US18135006
申请日：2023-04-14
Applicant: Meta Platforms Technologies, LLC
Inventor： Sundeep Kumar Jolly , Sihui He
CPC classification number: G03B21/005 , G02F1/292 , G02F1/335 , G09G3/003 , G02F2201/307
Abstract: A leaky-mode acousto-optical modulator may be used to generate visual images suitable for direct viewing, without image-forming optics. To extend a field of view of the modulator to limits suitable for visual displays, the leaky-mode acousto-optical modulator may be equipped with a switchable beam redirector, e.g. a switchable-angle reflector, providing field of view portions one by one in a time-sequential manner. The field of view portions coalesce into a continuous synthetic field of view suitable for wide-angle visual display applications.
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公开(公告)号：US20230393329A1
公开(公告)日：2023-12-07
申请号：US18188499
申请日：2023-03-23
Applicant: Meta Platforms Technologies, LLC
Inventor： Tingling Rao , Andrew John Ouderkirk , Xiayu Feng , Sihui He , Babak Amirsolaimani , Wanli Chi , Lafe Joseph Purvis, II , Jian Xu , Zhaocheng Liu
CPC classification number: G02B6/02038 , G02B6/34 , G02B6/425
Abstract: An optical element includes a waveguide body that is configured to guide light by total internal reflection from an input end to an output end, an input coupling structure located at the input end for coupling light into the waveguide body, and an output coupling structure located at the output end for coupling light out of the waveguide body, where the waveguide body includes a layer of an optically anisotropic organic solid crystal. Such an optical element may have low weight and exhibit good color uniformity while presenting a 2D diagonal field-of-view of at least approximately 10°.
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公开(公告)号：US11822086B2
公开(公告)日：2023-11-21
申请号：US17667504
申请日：2022-02-08
Applicant: Meta Platforms Technologies, LLC
Inventor： Sihui He , Wanli Chi , Ying Geng , Jacques Gollier
CPC classification number: G02B27/0172 , G02B6/0016 , G02B27/0093 , G06F3/013 , G02B2027/0138 , G06T19/006
Abstract: A see-through illuminator for a reflective display panel provides a better image contrast when the illuminator is configured to direct a leakage light beam exiting the lightguide from a side opposing the display panel to propagate non-parallel to an image light formed by reflection of an illuminating light beam from the display panel. An objective lens may concentrate the image and leakage light beams at different locations, enabling a user's eye placed at a location of the image light beam to see the projected image without interference from the leakage light beam.
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公开(公告)号：US12259553B2
公开(公告)日：2025-03-25
申请号：US17666227
申请日：2022-02-07
Applicant: META PLATFORMS TECHNOLOGIES, LLC
Inventor： Miaomiao Xu , Brian Wheelwright , Fenglin Peng , Ying Geng , Changwon Jang , Maxwell Parsons , Sihui He , Jacques Gollier
Abstract: An illuminator for illuminating a display panel includes a lightguide with an array of buried slanted bulk reflectors that out-couple portions of the light beam propagating in the lightguide through one of the lightguide surfaces. Polarization beam-splitting slanted surfaces may be used to provide polarized output. Such an illuminator may be used with a reflective display panel operating by polarization. The beam-splitting slanted surfaces operate as a polarizer, providing polarized illuminating light. The light reflected by the reflective panel may propagate back through the illuminator, and the polarization beam-splitting slanted surfaces may operate also as analyzer.
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10.发明公开公开(公告)号：US20240094568A1
公开(公告)日：2024-03-21
申请号：US18135020
申请日：2023-04-14
Applicant: Meta Platforms Technologies, LLC
Inventor： Sundeep Kumar Jolly , Sihui He
CPC classification number: G02F1/035 , G02F1/0072 , G02F1/0327
Abstract: A leaky-mode acousto-optical modulator may be used to generate visual images suitable for direct viewing, without image-forming optics. To extend a field of view of the modulator to limits suitable for visual displays, an array of acoustic transducers is coupled to a waveguide along its length. Each acoustic transducer generates an acoustic wave causing a corresponding leaky mode to appear. A reflector is disposed proximate each transducer for directing the out-coupled light portion at a unique angle, providing a corresponding field of view portion for that direction. The field of view portions coalesce into a continuous synthetic field of view suitable for wide-angle visual display applications.
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