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：US20220413297A1

公开(公告)日：2022-12-29

申请号：US17847730

申请日：2022-06-23

Applicant: Meta Platforms Technologies, LLC

Inventor： Brian Wheelwright ,  Ying Geng ,  Kieran Connor Kelly

IPC: G02B27/01

Abstract: A head mounted display for virtual reality imaging includes a pixel array including multiple pixels configured in a two-dimensional surface, each pixel providing multiple light beams forming an image provided to a user. The head mounted display also includes a first optical element to provide a central portion of a field of view for the image through an eyebox that limits a volume including a pupil of the user, and a second optical element to provide a peripheral portion of the field of view for the image through the eyebox. The second optical element includes a lenslet array to provide a segmented view of the peripheral portion of the field of view that includes at least one of a free form lenslet, a liquid crystal lenslet, a Fresnel lenslet, or a pancake lenslet. A system and a method for using the above head mounted display are also provided.

公开(公告)号：US11526016B1

公开(公告)日：2022-12-13

申请号：US16920202

申请日：2020-07-02

Applicant: META PLATFORMS TECHNOLOGIES, LLC

Inventor： Weichuan Gao ,  Ying Geng

IPC: G02B27/28 ,  G02B27/01 ,  G02B17/08 ,  F21V8/00 ,  G02F1/1362

Abstract: An optical device includes a spatial light modulator configured to project image light, a diffractive lens, and a polarization-selective reflector. The spatial light modulator defines an optical axis. The diffractive lens is positioned to receive the image light from the spatial light modulator. The polarization-selective reflector is positioned to receive the image light from the diffractive lens. The polarization-selective reflector having a polarization-selective reflective surface in an orientation that is non-perpendicular to the optical axis of the spatial light modulator.

公开(公告)号：US11467332B2

公开(公告)日：2022-10-11

申请号：US16734167

申请日：2020-01-03

Applicant: META PLATFORMS TECHNOLOGIES, LLC

Inventor： Fenglin Peng ,  Ying Geng ,  Jacques Gollier ,  Garam Young

IPC: G02B6/00 ,  F21V8/00 ,  G02F1/01 ,  G02B27/01 ,  G02B27/28 ,  G02F1/139

Abstract: A display device includes a waveguide, an array of tunable retarders in contact with the waveguide, and a polarization selective optical element. A respective tunable retarder of the array of tunable retarders receives light from the waveguide. The respective tunable retarder has a first state, which causes the respective tunable retarder to direct light having a first polarization in a first direction and a second state, which causes the respective tunable retarder to direct light having a second polarization that is distinct from the second polarization in the first direction. The polarization selective optical element is located adjacent to the array of tunable retarders so that the light having the second polarization propagates from the polarization selective optical element in a second direction and the light having the second polarization propagates from the polarization selective optical element in a third direction distinct from the second direction.

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.