公开(公告)号：US11774753B1

公开(公告)日：2023-10-03

申请号：US17531301

申请日：2021-11-19

Applicant: META PLATFORMS TECHNOLOGIES, LLC

Inventor： Giuseppe Calafiore ,  Ningfeng Huang ,  Andrew Maimone ,  Andrew Ouderkirk ,  Hee Yoon Lee ,  Maxwell Parsons ,  Scott Charles McEldowney ,  Babak Amirsolaimani ,  Pasi Saarikko ,  Wanli Chi ,  Alexander Koshelev ,  Barry David Silverstein ,  Lu Lu ,  Wai Sze Tiffany Lam ,  Gang Li ,  Stephan Lutgen ,  Francois Gerard Franck Olivier ,  David Massoubre

IPC: G02B27/00 ,  G02B27/44 ,  G02B27/01 ,  G02B27/09 ,  G02B27/10

CPC classification number: G02B27/0081 ,  G02B27/0172 ,  G02B27/0944 ,  G02B27/1086 ,  G02B27/44 ,  G02B2027/0145 ,  G02B2027/0152

Abstract: A waveguide assembly is provided. The waveguide assembly includes a pair of pupil-replicating waveguides. The first pupil-replicating waveguide is configured for receiving an input beam of image light and providing an intermediate beam comprising multiple offset portions of the input beam. The second pupil-replicating waveguide is configured for receiving the intermediate beam from the first pupil-replicating waveguide and providing an output beam comprising multiple offset portions of the intermediate beam. The input beam may be expanded by the waveguide assembly in such a manner that pupil gaps are reduced or eliminated.

公开(公告)号：US11619774B2

公开(公告)日：2023-04-04

申请号：US17383245

申请日：2021-07-22

Applicant: META PLATFORMS TECHNOLOGIES, LLC

Inventor： Jacques Gollier ,  Fenglin Peng ,  Alexander Koshelev ,  Giuseppe Calafiore ,  Lu Lu ,  Ying Geng ,  Yun-Han Lee

IPC: G02B5/32 ,  F21V8/00 ,  G02B6/12 ,  G02B27/09 ,  G02B6/124 ,  G02B6/125 ,  G02B27/01 ,  G02B5/18

Abstract: An illuminator for a display panel includes a light source for providing a light beam and a lightguide coupled to the light source for receiving and propagating the light beam along the substrate. The lightguide includes an array of out-coupling gratings that runs parallel to the array of pixels for out-coupling portions of the light beam from the lightguide such that the out-coupled light beam portions propagate through the substrate and produce an array of optical power density peaks at the array of pixels due to Talbot effect. A period of the array of peaks is an integer multiple of a pitch of the array of pixels.

公开(公告)号：US11709411B2

公开(公告)日：2023-07-25

申请号：US17378467

申请日：2021-07-16

Applicant: META PLATFORMS TECHNOLOGIES, LLC

Inventor： Fenglin Peng ,  Ying Geng ,  Jacques Gollier ,  Giuseppe Calafiore ,  Alexander Koshelev ,  Mengfei Wang ,  Lu Lu

IPC: G02F1/29 ,  G02B27/01 ,  G02F1/13 ,  G02F1/1347 ,  G06F3/01

CPC classification number: G02F1/292 ,  G02B27/0172 ,  G02B27/0179 ,  G02F1/1323 ,  G02F1/13473 ,  G02B2027/0178 ,  G02B2027/0187 ,  G06F3/013

Abstract: A display device includes a directional illuminator providing a light beam, a display panel downstream of a directional illuminator, for receiving and spatially modulating the light beam, and a beam redirecting module downstream of the display panel, for variably redirecting the spatially modulated light beam. Steering the illuminating light by the beam redirecting module enables one to steer the exit pupil of the display device to match the user's eye location(s).

公开(公告)号：US12140761B2

公开(公告)日：2024-11-12

申请号：US17746672

申请日：2022-05-17

Applicant: Meta Platforms Technologies, LLC

Inventor： Giuseppe Calafiore ,  Alexander Koshelev

IPC: G02B27/01 ,  F21V8/00 ,  G02B6/12 ,  G02B6/28 ,  G02B6/35 ,  G02B26/10 ,  G02B27/10

Abstract: A device for providing a 1D line of an image is disclosed. The device includes a wavelength-tunable light source for providing image light having the angular distribution encoded in optical spectrum. The device further includes a thin slab waveguide having an out-coupler in form of a diffraction grating for out-coupling the image light at an angle dependent on wavelength. The image may be formed by scanning a collimated beam propagating in the slab waveguide when using tunable monochromatic light sources, or by forming the 1D singular distribution of brightness at a same time when using a tunable-spectrum light sources. The device may be used in a near-eye display for forming a 2D image in angular domain.

公开(公告)号：US11675118B2

公开(公告)日：2023-06-13

申请号：US17363982

申请日：2021-06-30

Applicant: Meta Platforms Technologies, LLC

Inventor： Tanya Malhotra ,  Tingling Rao ,  Liliana Ruiz Diaz ,  Oleg Yaroshchuk ,  Sheng Ye ,  Andrew John Ouderkirk ,  Alexander Koshelev ,  Lafe Joseph Purvis, II ,  Junren Wang ,  Arman Boromand

IPC: G02B5/30

CPC classification number: G02B5/3041 ,  G02B5/3016 ,  C09K2323/03 ,  C09K2323/031 ,  C09K2323/035

Abstract: A film stack includes a plurality of first films and a plurality of second films alternately stacked. At least one second film of the plurality of second films includes a solid crystal including crystal molecules aligned in a predetermined alignment direction. At least one first film of the plurality of first films includes an alignment structure configured to at least partially align the crystal molecules of the solid crystal in the predetermined alignment direction.

公开(公告)号：US11803024B2

公开(公告)日：2023-10-31

申请号：US17374932

申请日：2021-07-13

Applicant: META PLATFORMS TECHNOLOGIES, LLC

Inventor： Jonathan Robert Peterson ,  John Goward ,  Maik Andre Scheller ,  Andrew John Ouderkirk ,  Christopher Yuan Ting Liao ,  Giuseppe Calafiore ,  Alexander Koshelev

IPC: G02B6/42 ,  G02B26/08 ,  G02B5/30 ,  G06F3/01

CPC classification number: G02B6/4298 ,  G02B5/3025 ,  G02B26/0833 ,  G06F3/014 ,  G06F3/016

Abstract: A device includes a light source to emit light and a light detector to receive the light emitted by the light source. The device may include a high voltage optical transformer and may be configured such that the light detector is laterally spaced away from the light source. In some architectures, the light source and the light detector may be arranged in a common plane. A photonic integrated circuit may be used to couple light emitted from the light source to the light detector.

公开(公告)号：US11740471B2

公开(公告)日：2023-08-29

申请号：US17401160

申请日：2021-08-12

Applicant: META PLATFORMS TECHNOLOGIES, LLC

Inventor： Fenglin Peng ,  Ying Geng ,  Lu Lu ,  Yun-Han Lee ,  Alexander Koshelev ,  Giuseppe Calafiore ,  Jacques Gollier

IPC: G02F1/1335 ,  G02B27/01 ,  F21V8/00 ,  G02F1/13357

CPC classification number: G02B27/0172 ,  G02B6/005 ,  G02B6/0078 ,  G02B27/0179 ,  G02F1/133536 ,  G02F1/133553 ,  G02B2027/0178 ,  G02B2027/0187 ,  G02F1/133524 ,  G02F1/133526 ,  G02F1/133606 ,  G02F1/133621

Abstract: A display device with a transparent illuminator and an liquid crystal (LC) display panel is disclosed. The transparent illuminator includes a light source and a transparent lightguide, which may be based on a slab of transparent material with zigzag light propagation of the illuminating light in the slab and/or a transparent photonic integrated circuit with singlemode ridge waveguides for spreading the illuminating light in a plane parallel to the plane of LC display panel. The lightguide includes a plurality of grating out-couplers whose position is coordinated with positions of LC pixels for higher throughput. A reflective offset-to-angle optical element may be provided to form an image in angular domain through the LC panel and through the transparent illuminator, resulting in an overall compact and efficient display configuration.

公开(公告)号：US11609370B2

公开(公告)日：2023-03-21

申请号：US17485061

申请日：2021-09-24

Applicant: Meta Platforms Technologies, LLC

Inventor： Alexander Koshelev ,  Giuseppe Calafiore

IPC: F21V8/00 ,  G02B27/10 ,  G02B27/01 ,  G02B6/124 ,  G02B27/09 ,  G02B6/12 ,  G02B6/125 ,  G02B6/28

Abstract: A waveguide illuminator includes an input waveguide, a waveguide splitter coupled to the input waveguide, and a waveguide array coupled to the waveguide splitter. The waveguide array includes an array of out-couplers out-coupling portions of the split light beam to form an array of out-coupled beam portions for illuminating a display panel. Locations of the array of out-couplers are coordinated with locations of individual pixels of the display panel, causing each light beam portion to propagate through a corresponding pixel of the display panel, thereby improving efficiency of light utilization by the display panel.

公开(公告)号：US20220350100A1

公开(公告)日：2022-11-03

申请号：US17374932

申请日：2021-07-13

Applicant: META PLATFORMS TECHNOLOGIES, LLC

Inventor： Jonathan Robert Peterson ,  John Goward ,  Maik Andre Scheller ,  Andrew John Ouderkirk ,  Christopher Yuan Ting Liao ,  Giuseppe Calafiore ,  Alexander Koshelev

IPC: G02B6/42 ,  G02B26/08 ,  G02B5/30

Abstract: A device includes a light source to emit light and a light detector to receive the light emitted by the light source. The device may include a high voltage optical transformer and may be configured such that the light detector is laterally spaced away from the light source. In some architectures, the light source and the light detector may be arranged in a common plane. A photonic integrated circuit may be used to couple light emitted from the light source to the light detector.