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公开(公告)号：US20240231119A1
公开(公告)日：2024-07-11
申请号：US18522130
申请日：2023-11-28
Applicant: Meta Platforms Technologies, LLC
Inventor： Yun-Han Lee , Chulwoo Oh , Hyunmin Song , Xinyu Zhu , Zhang Jia , Yongmin Park , Jiawei Lu
CPC classification number: G02B27/4216 , G02B7/09 , G02B27/0037
Abstract: The disclosed system may include a display; a lens; and a diffractive optical element, where the diffractive optical element is configured to increase a fill factor of the display when the lens is used to magnify the display. Various other apparatuses, systems, and methods are also disclosed.
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公开(公告)号：US11815729B2
公开(公告)日：2023-11-14
申请号：US17229852
申请日：2021-04-13
Applicant: Meta Platforms Technologies, LLC
Inventor： Yun-Han Lee , Stephen Choi , Mengfei Wang , Junren Wang , Lu Lu , Kyle Justin Curts
CPC classification number: G02B7/003 , G02B5/1823 , G02B5/32 , G02B27/286 , G02B27/4233 , G03H1/0248 , G02B2005/1804
Abstract: A system includes a diffractive optical element configured to receive a first beam and a second beam interfering with one another to generate a first interference pattern. The diffractive optical element is also configured to forwardly diffract the first beam and the second beam to output a third beam and a fourth beam. The third beam and the fourth beam interfere with one another to generate a second interference pattern. The system also includes a detector configured to detect the second interference pattern.
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公开(公告)号：US11733445B2
公开(公告)日：2023-08-22
申请号：US17083370
申请日：2020-10-29
Applicant: Meta Platforms Technologies, LLC
Inventor： Yun-Han Lee , Junren Wang , Mengfei Wang , Babak Amirsolaimani , Lu Lu , Scott Charles McEldowney
CPC classification number: G02B5/3083 , G02B5/3016 , G02B6/005 , G02B27/0172
Abstract: An optical element includes a first birefringent medium layer with orientations of directors of first optically anisotropic molecules spatially varying with a first in-plane pitch and a first vertical pitch. The optical element also includes a second birefringent medium layer with orientations of directors of second optically anisotropic molecules spatially varying with a second in-plane pitch and a second vertical pitch. The second birefringent medium layer is optically coupled with the first birefringent medium layer and configured to reduce a diffraction of a light by the first birefringent medium layer. The first in-plane pitch is substantially the same as the second in-plane pitch, and the second vertical pitch is smaller than the first vertical pitch.
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4.发明授权公开(公告)号：US11624864B2
公开(公告)日：2023-04-11
申请号：US17209205
申请日：2021-03-22
Applicant: Meta Platforms Technologies, LLC
Inventor： Junren Wang , Lu Lu , Hyunmin Song , Yun-Han Lee
IPC: G02F1/1337 , G02F1/1335 , G02B5/30 , G02B5/02
Abstract: An optical element is provided. The optical element includes an optical film including a birefringent material having a chirality. Optically anisotropic molecules of the birefringent material disposed adjacent a first surface of the optical film are configured with a first pretilt angle in a range of greater than 10° and less than 80°, or in a range of greater than −80° and less than −10°. Optically anisotropic molecules of the birefringent material disposed adjacent a second surface of the optical film opposing the first surface are configured with a second pretilt angle in the range of greater than 10° and less than 80°, or in the range of greater than −80° and less than −10°.
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公开(公告)号：US20250164695A1
公开(公告)日：2025-05-22
申请号：US18785679
申请日：2024-07-26
Applicant: Meta Platforms Technologies, LLC
Inventor： Prathmesh Deshmukh , Tingling Rao , Zhaoyu Nie , Andrew John Ouderkirk , Jie Li , Yuanrui Li , Jianji Yang , Zhenye Li , Sawyer Miller , Xuan Wang , Joshua Cobb , Hsien-Hui Cheng , Eugene Cho , Robin Sharma , Eric Stratton , Ajit Ninan , Zhexin Zhao , Xiayu Feng , Yun-Han Lee , Michael Escuti , Steven John Robbins , Babak Amirsolaimani , Lu Lu , Barry David Silverstein
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 element located at the input end for coupling light into the waveguide body, and an output coupling element located at the output end for coupling light out of the waveguide body, where the waveguide body includes an organic solid crystal. The organic solid crystal may be a single crystal having principal axes rotated with respect to the dimensions of the waveguide body. Such an optical element may have low weight and exhibit good color uniformity while providing polarization scrambling of the guided light.
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Patent Agency Ranking
公开(公告)号：US12256153B1
公开(公告)日：2025-03-18
申请号：US17969605
申请日：2022-10-19
Applicant: META PLATFORMS TECHNOLOGIES, LLC
Inventor： Yun-Han Lee , Matthieu Charles Raoul Leibovici , Chulwoo Oh , Hyunmin Song , Junren Wang
Abstract: Various embodiments set forth eye tracking systems. In some embodiments, an eye tracking system includes a polarization volume hologram (PVH) combiner having a rolling k-vector design that provides relatively wide coverage of users whose eyeglasses prescriptions can vary. The PVH combiner can further include (1) fiducial regions created by differential patterning that generate dark regions in images captured of an eye, and/or (2) multiple regions that diffract light at angles to produce different perspectives in the captured images. The dark regions and/or different perspectives can be used to calibrate eye tracking. In addition, the PVH combiner can include off-axis lens regions that generate glints for the eye tracking.
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公开(公告)号：US12204136B2
公开(公告)日：2025-01-21
申请号：US17901851
申请日：2022-09-02
Applicant: Meta Platforms Technologies, LLC
Inventor： Yun-Han Lee , Lu Lu , Mengfei Wang , Fenglin Peng , Junren Wang , Oleg Yaroshchuk , Yingfei Jiang , Babak Amirsolaimani , Scott Charles McEldowney
Abstract: A device includes a display configured to generate an image light. The device also includes a waveguide optically coupled with the display and configured to guide the image light to an exit pupil of the device. The waveguide includes a grating including a birefringent material, and a birefringence of the grating is configured to increase along a pupil-expanding direction of the device.
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公开(公告)号：US20240345442A1
公开(公告)日：2024-10-17
申请号：US18630816
申请日：2024-04-09
Applicant: Meta Platforms Technologies, LLC
Inventor： Xiangtong Li , Xinyu Zhu , Yu-Jen Wang , Linghui Rao , Yun-Han Lee
IPC: G02F1/1343 , G06F1/16
CPC classification number: G02F1/134318 , G02F1/13439 , G06F1/163
Abstract: A liquid crystal pixel includes liquid crystals, a source electrode, and a transparent common electrode layer. The liquid crystals are configured to change an alignment of the liquid crystals in response to a voltage applied across the source electrode and the transparent common electrode layer. The slit in the transparent common electrode layer includes multiple angled sections.
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公开(公告)号：US12001017B1
公开(公告)日：2024-06-04
申请号：US17672654
申请日：2022-02-15
Applicant: Meta Platforms Technologies, LLC
Inventor： Yun-Han Lee , Yu Shi , Lu Lu , Scott Charles McEldowney
CPC classification number: G02B27/0093 , G02B27/0172 , G06F3/013 , G02B2027/0138 , G02B2027/014
Abstract: An illumination system includes a light source configured to emit an infrared light. The illumination system also includes a substrate and a plurality of light deflecting elements coupled with the substrate and configured to deflect the infrared light to illuminate an object.
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10.发明授权公开(公告)号：US11624922B2
公开(公告)日：2023-04-11
申请号：US17326074
申请日：2021-05-20
Applicant: META PLATFORMS TECHNOLOGIES, LLC
Inventor： Brian Wheelwright , Yun-Han Lee , Babak Amirsolaimani , Weichuan Gao
IPC: G02B27/01
Abstract: An optical assembly for projecting light output by a display includes an optical waveguide, a reflective optical element, and a in-coupler coupled with the optical waveguide. The reflective optical element is positioned to receive first light and to reflect the first light as second light. The in-coupler is positioned to receive the first light and transmit the first light toward the reflective optical element. The in-coupler is further positioned to receive the second light and redirect a first portion of the second light so that the first portion of the second light undergoes total internal reflection inside the optical waveguide. The reflective optical element includes a negative meniscus lens having a concave lens surface and a convex lens surface coupled with a reflective surface. The reflective optical element is positioned to focus the first light such that the second light is more collimated than the first light.
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