公开(公告)号：US20240134447A1

公开(公告)日：2024-04-25

申请号：US17972908

申请日：2022-10-24

Applicant: Meta Platforms Technologies, LLC

Inventor： Mohamed Tarek Ahmed El-Haddad ,  Babak Amirsolaimani ,  Francesco Larocca ,  Yang Yang ,  Junjie Hu

IPC: G06F3/01 ,  G02B27/01

CPC classification number: G06F3/013 ,  G02B27/0172 ,  G02B2027/0174 ,  G02B2027/0178

Abstract: Image light is generated with a display light source. The image light is visible. An infrared light source emits infrared light. A scan directs the image light and the infrared light to an input coupler of a display waveguide and the display waveguide presents the image light to an eyebox region as a virtual image.

公开(公告)号：US11852814B2

公开(公告)日：2023-12-26

申请号：US16810471

申请日：2020-03-05

Applicant: META PLATFORMS TECHNOLOGIES, LLC

Inventor： Yusufu Njoni Bamaxam Sulai ,  Gang Li ,  Ying Geng ,  Brian Wheelwright ,  Jacques Gollier ,  Babak Amirsolaimani ,  Weichuan Gao

IPC: G02B3/08 ,  G02B27/01 ,  G02B5/02 ,  H04N9/31 ,  G02B5/18 ,  G02B5/30 ,  G02B27/10 ,  G02B27/28 ,  G02F1/1334 ,  G02F1/137

CPC classification number: G02B27/0172 ,  G02B3/08 ,  G02B5/0289 ,  G02B5/1819 ,  G02B5/3025 ,  G02B27/0176 ,  G02B27/10 ,  G02B27/106 ,  G02B27/283 ,  G02F1/137 ,  G02F1/1334 ,  H04N9/3152 ,  G02B2027/0178 ,  G02B2027/0187 ,  G02F1/13345

Abstract: A display device includes an optical diffuser configured to, in response to receiving image light, output diffused image light having a same polarization as the image light. The optical diffuser is also configured to transmit ambient light. The display device also includes an optical assembly that includes a substrate, a reflector coupled to the substrate, and a beam splitter coupled to the substrate. The optical assembly is configured to transmit the diffused image light at a first optical power by reflecting the diffused image light at the reflector and at the beam splitter and to transmit the transmitted ambient light at a second optical power that is less than the first optical power without reflection at the reflector or the beam splitter. A method for transmitting light through the display device is also disclosed.

公开(公告)号：US11808917B2

公开(公告)日：2023-11-07

申请号：US17246357

申请日：2021-04-30

Applicant: META PLATFORMS TECHNOLOGIES, LLC

Inventor： Babak Amirsolaimani ,  Scott Charles McEldowney ,  Andrew John Ouderkirk

IPC: G02B26/00 ,  G02B27/28 ,  G02B5/30 ,  G03H1/02

CPC classification number: G02B26/00 ,  G02B5/3083 ,  G02B27/288 ,  G03H1/0248

Abstract: An optical assembly includes a first flexible membrane and a first optical element coupled with at least a first portion of the first flexible membrane. The optical assembly also includes a substrate having a curved surface. The first optical element is coupled to the curved surface of the substrate with the first flexible membrane. A method for making an optical assembly includes obtaining a first flexible membrane and a first optical element. The method includes coupling the first optical element with at least a first portion of the first flexible membrane and coupling, with the first flexible membrane, the first optical element to a curved surface of a substrate.

公开(公告)号：US11698539B2

公开(公告)日：2023-07-11

申请号：US16858331

申请日：2020-04-24

Applicant: META PLATFORMS TECHNOLOGIES, LLC

Inventor： Ying Geng ,  Jacques Gollier ,  Weichuan Gao ,  Babak Amirsolaimani

IPC: G02B27/01 ,  G02B27/28 ,  F21V8/00 ,  H04N9/31 ,  G02B17/08

CPC classification number: G02B27/283 ,  G02B6/005 ,  G02B6/0058 ,  G02B6/0061 ,  G02B17/086 ,  G02B27/0172 ,  G02B27/0179 ,  G02B27/286 ,  H04N9/3152 ,  G02B2027/0118 ,  G02B2027/0138 ,  G02B2027/0178 ,  G02B2027/0187

Abstract: A display device includes a light source, a spatial light modulator (SLM), and an optical assembly that includes a first reflective surface and a second reflective surface that is opposite to the first reflective surface. The light source is configured to provide illumination light. The optical assembly is configured to receive the illumination light. At least a first portion of the illumination light received by the optical assembly is transmitted through the first reflective surface toward the second reflective surface, is reflected by the second reflective surface toward the first reflective surface, is reflected by the first reflective surface toward the second reflective surface, and is transmitted through the second reflective surface. The SLM is configured to receive and modulate the portion of the illumination light transmitted through the optical assembly, and to output the modulated light. A method performed by the display device is also disclosed.

公开(公告)号：US20230176367A1

公开(公告)日：2023-06-08

申请号：US17581588

申请日：2022-01-21

Applicant: Meta Platforms Technologies, LLC

Inventor： Babak Amirsolaimani ,  Renate Eva Klementine Landig ,  Andrew Maimone ,  Giuseppe Calafiore

IPC: G02B27/00 ,  F21V8/00 ,  G02B27/01

CPC classification number: G02B27/0081 ,  G02B6/0035 ,  G02B27/0172 ,  G02B2027/0174

Abstract: A lightguide for conveying image light to an eyebox of a display device includes a tunable grating, e.g. an out-coupling grating for out-coupling the image light from the lightguide. The tunable grating may be tuned or switched to effectively diffract light of a color channel of a color-sequential display. In augmented reality display systems, a lightguide combiner element may include a switchable grating to out-couple the image light only during short time intervals and to not out-couple the image light in between these time intervals. Effectively, the out-coupling grating is present only a portion of overall operation time of the display, which improves the transparency of the combiner element to the outside light and reduces rainbow effects.

公开(公告)号：US11668929B2

公开(公告)日：2023-06-06

申请号：US16854851

申请日：2020-04-21

Applicant: Meta Platforms Technologies, LLC

Inventor： Babak Amirsolaimani ,  Brian Wheelwright ,  Yusufu Njoni Bamaxam Sulai ,  Weichuan Gao ,  Fenglin Peng ,  Ying Geng

IPC: G02B27/01 ,  G02B9/10 ,  G02B27/00 ,  G02B5/30 ,  G02B27/09 ,  G02B5/08

CPC classification number: G02B27/0025 ,  G02B5/08 ,  G02B5/3025 ,  G02B5/3083 ,  G02B27/0983

Abstract: An optical lens assembly includes an optical lens and a Pancharatnam Berry Phase (“PBP”) element coupled to the optical lens. The PBP element is configured to provide chromatic aberration correction for the optical lens. An Abbe number of the PBP element and an Abbe number of the optical lens have opposite signs.

公开(公告)号：US11579425B1

公开(公告)日：2023-02-14

申请号：US16848652

申请日：2020-04-14

Applicant: META PLATFORMS TECHNOLOGIES, LLC

Inventor： Ying Geng ,  Brian Wheelwright ,  Jacques Gollier ,  Yusufu Njoni Bamaxam Sulai ,  Babak Amirsolaimani ,  Weichuan Gao ,  Gang Li ,  Mengfei Wang ,  Fenglin Peng

IPC: G02B17/08 ,  G02B3/08

Abstract: An optical assembly includes at least one substrate that provides a first curved surface and a second surface. The optical assembly also includes a beam splitter on the first curved surface, a reflector on the second surface, and an optical retarder disposed between the beam splitter and the reflector. The optical assembly is configured to transmit the first light through the optical assembly at a first optical power. The optical assembly is also configured to transmit second light through peripheral portions of the optical assembly at a second optical power that is less than the first optical power. The first light includes light having a first polarization and wavelengths within a predetermined wavelength range. The second light includes light having wavelengths within the predetermined wavelength range and a second polarization orthogonal to the first polarization, as well as light having wavelengths outside the predetermined wavelength range.

公开(公告)号：US11422375B2

公开(公告)日：2022-08-23

申请号：US16810431

申请日：2020-03-05

Applicant: META PLATFORMS TECHNOLOGIES, LLC

Inventor： Ying Geng ,  Brian Wheelwright ,  Jacques Gollier ,  Babak Amirsolaimani ,  Weichuan Gao ,  Yusufu Njoni Bamaxam Sulai

IPC: G02B27/01 ,  G02B27/10 ,  G02B27/28 ,  G02B3/08 ,  G02F1/1333 ,  G02B5/18 ,  G02B5/02 ,  G02F1/137 ,  H04N9/31 ,  G02B5/30 ,  G02F1/1334

Abstract: An optical assembly a substrate having a first surface and a second surface that is opposite to and substantially parallel with the first surface. The first surface has a first curved profile and the second surface has a second curved profile. The optical assembly also includes a beam splitter on the first surface and a reflector on the second surface. The optical assembly is configured to transmit image light received at the first surface in an optical path that includes reflection at each of the reflector and the beam splitter before the image light is output from the second surface. The optical assembly is also configured to transmit ambient light received at the first surface such that the second light is output from the second surface without undergoing reflection at either the reflector or the beam splitter. A method of transmitting light through the optical assembly is also disclosed.