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公开(公告)号：US11846774B2
公开(公告)日：2023-12-19
申请号：US17697592
申请日：2022-03-17
发明人： Sihui He , Jacques Gollier , Maxwell Parsons , Babak Amirsolaimani , Wanli Chi , Daniel Guenther Greif , Renate Eva Klementine Landig , Xiayu Feng , Zhimin Shi , Nicholas John Diorio , Yang Yang , Giuseppe Calafiore , Fenglin Peng , Tanya Malhotra , Andrew John Ouderkirk
IPC分类号： G02B27/00 , G02B27/01 , G06F3/01 , G02F1/29 , F21V8/00 , G02B6/35 , G02F1/1335 , G09G3/00 , G09G3/34 , G06T7/246 , H04N23/56 , G02F1/335 , G03H1/02 , G06F1/16 , H04N23/698 , G01B11/22 , G01S7/4865 , G01S17/10 , G02B27/42 , G02F1/33 , G06T3/40 , G02B27/44 , G02B26/08 , H04N23/10
CPC分类号： G02B27/0093 , G01B11/22 , G01S7/4865 , G01S17/10 , G02B6/005 , G02B6/0016 , G02B6/0031 , G02B6/0035 , G02B6/0066 , G02B6/3518 , G02B26/0816 , G02B27/0081 , G02B27/0172 , G02B27/0179 , G02B27/4205 , G02B27/44 , G02F1/133504 , G02F1/133526 , G02F1/292 , G02F1/294 , G02F1/33 , G02F1/335 , G03H1/0248 , G06F1/163 , G06F3/013 , G06T3/4038 , G06T7/246 , G09G3/002 , G09G3/3413 , H04N23/56 , H04N23/698 , G02B2027/0105 , G02B2027/0138 , G02B2027/0174 , G02B2027/0178 , G02B2027/0187 , G06T2207/30201 , G09G2310/0235 , H04N23/10
摘要： A pupil-replicating lightguide includes a slab of transparent material, a switchable out-coupling grating for out-coupling portions of image light to propagate towards an eyebox, and a switchable tracking grating for redirecting tracking light carrying an eye image towards an eye tracking camera. One of the two gratings may be turned ON while the other is turned OFF, in a time-sequential manner, allowing the combined use of the pupil-replicating lightguide for carrying image light and eye tracking light.
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公开(公告)号：US20230367125A1
公开(公告)日：2023-11-16
申请号：US18124445
申请日：2023-03-21
发明人： Xiayu Feng , Sihui He
CPC分类号： G02B27/0172 , G02B27/281 , G02F1/0136 , G02B6/005
摘要： A near-eye display includes a first polarizer in a path of external light to an eyebox of the display for polarizing the external light to a first polarization state. A see-through lightguide is disposed in the path between the first polarizer and the eyebox for conveying image light to the eyebox in a second, orthogonal polarization state while transmitting the external light in the first polarization state. A second polarizer is disposed in the path downstream of the see-through lightguide for adjusting a power balance of the external light and the image light at the eyebox.
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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
IPC分类号： G02B27/01
CPC分类号： G02B27/0172
摘要： 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：US20240353532A1
公开(公告)日：2024-10-24
申请号：US18642484
申请日：2024-04-22
发明人： John Ho , Jiang Zhu , Boon Shiu , Paurakh Rajbhandary , Yuge Huang , Lu Lu , Junren Wang , Mengfei Wang , Xiayu Feng , Zhexin Zhao , Steven Alexander-Boyd Hickman , Tingling Rao , Kimberly Kay Childress , Amir Shariffar , Sadegh Aghaei , Zhaoyu Nie , Prathmesh Deshmukh , Zhaocheng Liu , Raymond Smith, II , Andrew John Ouderkirk , Sawyer Miller , Hsien-Hui Cheng , Xuan Wang , Ali Altaqui , Zhuoliang Ni
CPC分类号： G01S7/412 , A61B5/024 , G01S7/415 , G02B27/0172 , G03H1/0248 , G02B2027/0174 , G02B2027/0178 , G03H2001/026 , G03H2250/38
摘要： A computer-implemented method may include (1) causing a radar component to emit one or more radar signals and (2) causing the radar component to analyze one or more return signals. Also disclosed is a method for forming a 3D liquid crystal polarization hologram optical element and a method for characterizing diffractive waveguides includes directing light onto a structure and measuring the diffracted light to capture at least one image of the structure. Lastly, disclosed is a method of pattering organic solid crystals and a method directing a beam of input light to a surface of an optical material to determine crystallographic and optical parameters of the optical material. Various other methods, systems, and computer-readable media are also disclosed.
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公开(公告)号：US12092850B2
公开(公告)日：2024-09-17
申请号：US17073249
申请日：2020-10-16
发明人： Lu Lu , Xiayu Feng , Mengfei Wang , Hao Yu , Ryan Li , Yun-Han Lee , Junren Wang , Barry David Silverstein
CPC分类号： G02B5/32 , G02B5/203 , G02B5/3016 , G03H1/0248 , G03H1/0402 , G03H2001/0413 , G03H2001/0439 , G03H2260/12
摘要： A first layer of anisotropic material extends along a first plane and includes anisotropic components being parallel to a second plane non-parallel and non-perpendicular to the first plane. The anisotropic components are arranged in cycloidal or helical patterns. The cycloidal or helical patterns define one or more Bragg planes that are non-parallel and non-perpendicular to the first plane and either substantially parallel or substantially perpendicular to the second plane.
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公开(公告)号：US20230393322A1
公开(公告)日：2023-12-07
申请号：US17834760
申请日：2022-06-07
发明人： Xiayu Feng , Zhexin Zhao , Xuan Wang , Hekun Huang , Gang Li , Lu Lu
CPC分类号： G02B6/0023 , G02B27/4222 , G02B6/005 , G02B5/32 , G02B27/0172
摘要： A display apparatus includes a lightguide for conveying images to an eyebox. The lightguide includes a substrate, a diffractive optical element (DOE) configured to couple the image light into the substrate. The DOE has a spatially variable pitch configured to provide the DOE with a positive optical power. The lightguide further includes a grating out-coupler supported by the substrate for out-coupling portions of the image light from the substrate toward the eyebox.
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公开(公告)号：US11953796B2
公开(公告)日：2024-04-09
申请号：US17745854
申请日：2022-05-16
发明人： Lu Lu , Xiayu Feng , Hsien-Hui Cheng
IPC分类号： G02F1/137 , G02B27/01 , G02F1/1333 , G02F1/1337 , G02F1/1343
CPC分类号： G02F1/137 , G02B27/0172 , G02F1/133345 , G02F1/133738 , G02F1/134309 , G02B2027/0174 , G02B2027/0178 , G02F2203/07
摘要： A device is provided. The device includes a first Pancharatnam-Berry phase (“PBP”) lens, and a second PBP lens stacked with the first PBP lens. Each of the first PBP lens and the second PBP lens includes a liquid crystal (“LC”) layer. Each side of the LC layer is provided with a continuous electrode and a plurality of patterned electrodes. The patterned electrodes in the first PBP lens are arranged non-parallel to the patterned electrodes in the second PBP lens.
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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
发明人： Tingling Rao , Andrew John Ouderkirk , Xiayu Feng , Sihui He , Babak Amirsolaimani , Wanli Chi , Lafe Joseph Purvis, II , Jian Xu , Zhaocheng Liu
CPC分类号： G02B6/02038 , G02B6/34 , G02B6/425
摘要： 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：US12117687B1
公开(公告)日：2024-10-15
申请号：US18302556
申请日：2023-04-18
发明人： Hsien-Hui Cheng , Michael Escuti , Xiayu Feng , Mengfei Wang , Steven John Robbins , Zhexin Zhao , Lu Lu
IPC分类号： G02F1/1335 , G02F1/13363 , G02F1/1337 , G02F1/137 , G03H1/02
CPC分类号： G02F1/133524 , G02F1/133507 , G02F1/13355 , G02F1/133636 , G02F1/133757 , G02F1/13706 , G03H1/0248
摘要： 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.
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公开(公告)号：US20240027674A1
公开(公告)日：2024-01-25
申请号：US18063504
申请日：2022-12-08
发明人： Tingling Rao , Wanli Chi , Xiayu Feng , Yun-Han Lee , Andrew John Ouderkirk , Poer Sung
CPC分类号： G02B6/0038 , G02B6/0016 , G02B6/0065 , G02B27/0172 , G03H1/0248 , G02B2027/0178
摘要： 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 organic solid crystal. Such an optical element may have low weight and exhibit good color uniformity.
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