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：US20230098118A1

公开(公告)日：2023-03-30

申请号：US17894052

申请日：2022-08-23

Applicant: META PLATFORMS TECHNOLOGIES, LLC

Inventor： Andrew MAIMONE ,  Junren WANG ,  Barry David SILVERSTEIN

IPC: G02B27/01 ,  G02B27/28 ,  G02B27/00 ,  G02B27/14 ,  G02B27/02 ,  G02B27/48 ,  G02B5/18 ,  G02B5/32 ,  G02B17/00 ,  G02B27/10

Abstract: An optical device for a head-mounted display device includes a first partial reflector and a second partial reflector positioned relative to the first partial reflector so that the second partial reflector receives first light transmitted through the first partial reflector and reflects at least a portion of the first light toward the first partial reflector as second light. At least a portion of the second light is reflected by the first partial reflector as third light, and at least a portion of the third light is transmitted through the second partial reflector. At least one of the first partial reflector or the second partial reflector includes a reflective holographic element.

公开(公告)号：US20230077228A1

公开(公告)日：2023-03-09

申请号：US17884510

申请日：2022-08-09

Applicant: Meta Platforms Technologies, LLC

Inventor： Ganghun KIM ,  Andrew MAIMONE ,  Alexander Jobe FIX ,  Robert Dale CAVIN ,  Hee Yoon LEE ,  Matthieu Charles Raoul LEIBOVICI ,  Brian WHEELWRIGHT ,  Douglas Robert Lanman

IPC: G02B27/01 ,  G06T7/73 ,  G03H1/04 ,  A01N43/50 ,  A01N43/54 ,  A01N43/90 ,  A01N53/00 ,  C07D401/04 ,  C07D401/14 ,  C07D405/14 ,  C07D487/04 ,  C07D498/04

Abstract: A system for making a holographic medium for use in generating light patterns for eye tracking includes a light source configured to provide light and a beam splitter configured to separate the light into a first portion of the light and a second portion of the light that is spatially separated from the first portion of the light. The system also includes a first set of optical elements configured to transmit the first portion of the light for providing a first wide-field beam onto an optically recordable medium and one or more diffractive optical elements configured to receive the second portion of the light and project a plurality of separate light patterns onto the optically recordable medium for forming the holographic medium.