公开(公告)号：US20230168506A1

公开(公告)日：2023-06-01

申请号：US17540049

申请日：2021-12-01

Applicant: META PLATFORMS TECHNOLOGIES, LLC

Inventor： Gang LI ,  Brian WHEELWRIGHT ,  Andrew MAIMONE ,  Yang ZHAO ,  Ying GENG ,  Douglas Robert LANMAN

IPC: G02B27/01

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

Abstract: A display device includes a display module for providing first image light. The display device also includes a first optical element for receiving and transmitting the first image light from the display module. The display module includes a region from which the first image light is provided in directions other than a direction perpendicular to the first optical element. The display device further includes a second optical element so that the second optical element receives the first image light transmitted through the first optical element and sends the received first image light back toward the first optical element as second image light. The first optical element receives the second image light from the second optical element and sends the second image light back toward the second optical element, and the second optical element receives and transmits the second image light from the first optical element.

公开(公告)号：US20230152578A1

公开(公告)日：2023-05-18

申请号：US17526359

申请日：2021-11-15

Applicant: META PLATFORMS TECHNOLOGIES, LLC

Inventor： Changwon JANG ,  Olivier MERCIER ,  Gregory Olegovic ANDREEV ,  Gang LI ,  Liliana Ruiz DIAZ

IPC: G02B27/00 ,  G02B5/32 ,  H04N13/344 ,  H04N13/383 ,  H04N9/31

CPC classification number: G02B27/0093 ,  G02B5/32 ,  H04N13/344 ,  H04N13/383 ,  H04N9/3173

Abstract: A method includes projecting, with a holographic optical element, a first view of an eye toward an imaging device, and projecting, with the holographic optical element, a second view of the eye, distinct from the first view of the eye, toward the imaging device so that the first view and the second view of the eye are concurrently received by the imaging device. An eye tracking device for performing the method, a holographic optical element used for the method, and a method of making the holographic optical element are also disclosed.

公开(公告)号：US20220326533A1

公开(公告)日：2022-10-13

申请号：US17852233

申请日：2022-06-28

Applicant: Meta Platforms Technologies, LLC

Inventor： Ying GENG ,  Brian WHEELWRIGHT ,  Jacques GOLLIER ,  Yusufu Njoni Bamaxam SULAI ,  Babak AMIRSOLAIMANI ,  Weichuan GAO ,  Gang LI ,  Mengfei WANG ,  Adrian TRAVIS

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

Abstract: A display device includes a projector and a display that has a first surface and a second surface. The projector is configured to project image light toward the display. The display is configured to output diffused image light from the first surface and to transmit ambient light from the second surface to the first surface. The display device also includes an optical assembly that has a substrate with substantially uniform thickness. The optical assembly is configured to receive the diffused image light and transmit a portion of the diffused image light output from the first surface of the display at a first optical power. The optical assembly is also configured to receive the ambient light and transmit a portion of the ambient light through the optical assembly at a second optical power that is less than the first optical power.