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公开(公告)号：US11860573B1
公开(公告)日：2024-01-02
申请号：US17229844
申请日：2021-04-13
发明人： Mengfei Wang , Junren Wang , Yun-Han Lee , Stephen Choi , Lu Lu , Barry David Silverstein
CPC分类号： 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
摘要： 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.
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公开(公告)号：US11675188B2
公开(公告)日：2023-06-13
申请号：US17474362
申请日：2021-09-14
发明人： Yun-Han Lee , Lu Lu , Mengfei Wang , Fenglin Peng , Junren Wang
CPC分类号： G02B27/0037 , G02B5/32 , G02B27/0172 , G02B27/0179 , G03H1/0248 , G02B2027/0109 , G02B2027/0116 , G02B2027/0174 , G02B2027/0178 , G02B2027/0187 , G03H2001/0264
摘要： 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.
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公开(公告)号：US11635669B1
公开(公告)日：2023-04-25
申请号：US17005247
申请日：2020-08-27
发明人： Lu Lu , Hao Yu , Mengfei Wang , Junren Wang , Yun-Han Lee , Nicholas John Diorio , Barry David Silverstein
IPC分类号： G02F1/29 , G02F1/1337
摘要： 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.
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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：US11874474B1
公开(公告)日：2024-01-16
申请号：US17018579
申请日：2020-09-11
发明人： Yun-Han Lee , Mengfei Wang , Junren Wang , Lu Lu , Robin Sharma , Gregory Olegovic Andreev , Garam Young , Andrew John Ouderkirk , Babak Amirsolaimani , Fenglin Peng , Barry David Silverstein
CPC分类号： G02B27/0179 , G02B27/0172 , G02B27/283 , G02B27/286 , G02B27/4205 , G02F1/31 , H04N23/55 , H04N23/75 , G02B2027/011 , G02B2027/0138 , G02B2027/0187 , G02F2203/01 , G02F2203/07 , G02F2203/24
摘要： A system includes a diffractive optical element including at least one substrate and a grating structure. The grating structure is configured to diffract a first light having an incidence angle within a predetermined range, and the at least one substrate is configured to reflect a second light. The system also includes a polarization selective mechanism configured to generate images based on the first light and the second light, respectively.
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公开(公告)号：US11852905B2
公开(公告)日：2023-12-26
申请号：US17130208
申请日：2020-12-22
CPC分类号： G02C7/10 , G02B3/12 , G02B26/004
摘要： An optical element includes a first layer, a second layer, and a fluid. A first surface of the first layer is configured to change hydrophobicity in response to incoming activation light. Absorbing molecules in the fluid are repelled or attracted to the first surface in response to the hydrophobicity of the first surface.
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公开(公告)号：US11656500B2
公开(公告)日：2023-05-23
申请号：US16898091
申请日：2020-06-10
发明人： Yuge Huang , Fenglin Peng , Lu Lu , Junren Wang
IPC分类号： G02F1/13357 , G02F1/1335 , G02B5/30
CPC分类号： G02F1/13362 , G02B5/3016 , G02F1/133526 , G02F1/133543 , G02F2201/343
摘要： An optical device includes a light source and a polarization selective optical element. The polarization selective optical element includes a stack of a plurality of cholesteric liquid crystal layers. The plurality of cholesteric liquid crystal layers includes a first cholesteric liquid crystal layer with liquid crystal molecules arranged in a first helical configuration having a first pitch range for light of a first wavelength range and a second cholesteric liquid crystal layer with liquid crystal molecules arranged in a second helical configuration having a second pitch range for light of a second wavelength range. The second wavelength range is different from the first wavelength range.
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公开(公告)号：US11650429B2
公开(公告)日：2023-05-16
申请号：US17671348
申请日：2022-02-14
发明人： Junren Wang , Mengfei Wang , Yun-Han Lee , Yuge Huang , Lu Lu , Barry David Silverstein
CPC分类号： G02B27/286 , G02B5/1814 , G02B5/1833 , G02B5/3016 , G02B27/0172 , G02B27/30 , G02B2027/0123 , G02B2027/0138 , G02B2027/0178 , G02B2027/0187
摘要： A polarization conversion device includes a geometric phase grating and an angular selective waveplate. The geometric phase grating includes a first liquid crystal layer and is configured to diffract a unpolarized or partially polarized incident light beam into a first light beam and a second light beam (e.g., in two different diffraction orders). The first light beam is characterized by a first polarization state and propagates in a first direction. The second light beam is characterized by a second polarization state and propagates in a second direction. The angular selective waveplate includes a second liquid crystal layer, and functions as a zero or full-wave plate for the first light beam incident in the first direction and a half-wave plate for the second light beam incident in the second direction.
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公开(公告)号：US20230251489A1
公开(公告)日：2023-08-10
申请号：US18129620
申请日：2023-03-31
发明人： Yang Zhao , Afsoon Jamali , Junren Wang , Wai Sze Tiffany Lam , Lu Lu , Douglas Robert Lanman
CPC分类号： G02B27/0172 , G02F1/13718 , G03B13/36
摘要： 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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