公开(公告)号：US11860573B1

公开(公告)日：2024-01-02

申请号：US17229844

申请日：2021-04-13

Applicant: Meta Platforms Technologies, LLC

Inventor： Mengfei Wang ,  Junren Wang ,  Yun-Han Lee ,  Stephen Choi ,  Lu Lu ,  Barry David Silverstein

IPC: G03H1/12 ,  G03H1/04 ,  G02B27/28 ,  G03H1/02

CPC classification number: G03H1/0402 ,  G02B27/286 ,  G03H1/0248 ,  G03H1/0465 ,  G03H2001/0216 ,  G03H2001/0413 ,  G03H2001/0439 ,  G03H2001/0441 ,  G03H2223/20 ,  G03H2223/22 ,  G03H2223/23 ,  G03H2223/24 ,  G03H2227/05

Abstract: A system includes a mask configured to forwardly diffract an input beam as a first set of two polarized beams. The system also includes a polarization conversion element configured to convert the first set of two polarized beams into a second set of two polarized beams having opposite handednesses. The two polarized beams having opposite handednesses interfere with one another to generate a polarization interference pattern.

公开(公告)号：US11815729B2

公开(公告)日：2023-11-14

申请号：US17229852

申请日：2021-04-13

Applicant: Meta Platforms Technologies, LLC

Inventor： Yun-Han Lee ,  Stephen Choi ,  Mengfei Wang ,  Junren Wang ,  Lu Lu ,  Kyle Justin Curts

IPC: G03H1/26 ,  G02B7/00 ,  G02B5/32 ,  G02B5/18 ,  G03H1/02 ,  G02B27/28 ,  G02B27/42

CPC classification number: G02B7/003 ,  G02B5/1823 ,  G02B5/32 ,  G02B27/286 ,  G02B27/4233 ,  G03H1/0248 ,  G02B2005/1804

Abstract: A system includes a diffractive optical element configured to receive a first beam and a second beam interfering with one another to generate a first interference pattern. The diffractive optical element is also configured to forwardly diffract the first beam and the second beam to output a third beam and a fourth beam. The third beam and the fourth beam interfere with one another to generate a second interference pattern. The system also includes a detector configured to detect the second interference pattern.

公开(公告)号：US11714287B1

公开(公告)日：2023-08-01

申请号：US17375898

申请日：2021-07-14

Applicant: META PLATFORMS TECHNOLOGIES, LLC

Inventor： Brian Wheelwright ,  Jacques Gollier ,  Ying Geng ,  Yusufu Njoni Bamaxam Sulai ,  Weichuan Gao ,  Kieran Connor Kelly ,  Stephen Choi

IPC: G02B27/01 ,  G02B27/09

CPC classification number: G02B27/0176 ,  G02B27/0983 ,  G02B2027/0154 ,  G02B2027/0178

Abstract: A display device includes a display, an optical assembly, and a display-moving assembly connected to the display for moving the display between a first position and a second position. When in the first position, the display outputs image light in a first direction substantially parallel to an optical axis of the optical assembly. When in the second position, the display is positioned away from the optical axis of the optical assembly. The display device also includes a partial reflector and a partial reflector-moving assembly connected to the partial reflector for moving the partial reflector between a third position and a fourth position. When the partial reflector is in the third position, the display is in the first position and the display is disposed between the optical assembly and the partial reflector. When the partial reflector is in the fourth position, the display is in the second position.