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公开(公告)号：US20250155787A1
公开(公告)日：2025-05-15
申请号：US18922725
申请日：2024-10-22
Applicant: Meta Platforms Technologies, LLC
Inventor： Fenglin Peng , Jacques Gollier, JR. , Yung-Yu Hsu , Robert Upton , Thomas Charisoulis , Yun Wang , Brendan Hamel-Bissell , Zhaoning Yu , Joshua Cobb , Brandon Michael Hellman Friedman , Anurag Tyagi , John DeFranco , Xin Tong
Abstract: An illumination system includes a micro-LED array having a plurality of individually addressable diodes, a concentrator array overlying an output of the micro-LED array and configured to decrease a numerical aperture of light emitted by the array, and a non-emissive display panel arranged to receive light from the concentrator array.
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公开(公告)号：US20240427153A1
公开(公告)日：2024-12-26
申请号：US18736419
申请日：2024-06-06
Applicant: Meta Platforms Technologies, LLC
Inventor： Joshua Cobb , Derek Wallin , Ajit Ninan , Chun Chi Wan
Abstract: A polarizing illuminator includes a light source, a collimator for collimating a light beam emitted by the light source, a parallel plate having a first surface and a second surface disposed at an acute angle with respect to the light beam, the first surface including a transmissive portion and a reflective portion, and the second surface including a reflective polarizer configured to reflect one polarization of the light beam, transmit an orthogonal polarization of the light beam, and split the light beam into first and second orthogonally polarized sub-beams, and a retarding wave plate disposed between the reflective portion of the first surface and the reflective polarizer, wherein the retarding wave plate is configured to rotate at least one of the first sub-beam and the second sub-beam to a matched polarization, and the first and second sub-beams having the matched polarization propagate parallel to each other.
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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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公开(公告)号：US20240264518A1
公开(公告)日：2024-08-08
申请号：US18106980
申请日：2023-02-07
Applicant: Meta Platforms Technologies, LLC
Inventor： Joshua Cobb
CPC classification number: G03B21/2073 , G03B21/006 , G03B21/2033 , G03B21/2066 , G03B21/208 , G02B27/0172 , G02B2027/0178
Abstract: A polarizing illuminator with light recycling includes a light source and a reflector disposed proximate one another. An assembly including a lens, a quarter-wave plate, and a reflective polarizer is configured to redirect the light at unwanted polarization back to the specific location of the reflector, which reflects the light back through the quarter-wave plate, enabling the light to be recycled. The lens collimates both the transmitted and the recycled light portions, providing well-defined light beams. The configuration allows the recycled light beam to be collimated and to propagate in a pre-determined direction, allowing targeted focusing of the recycled light onto pixels of a spatial light modulator.
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