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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：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：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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