公开(公告)号：US11561510B1

公开(公告)日：2023-01-24

申请号：US16517535

申请日：2019-07-19

Applicant: Meta Platforms Technologies, LLC

Inventor： Andrew Maimone ,  Gang Li ,  Afsoon Jamali ,  Changwon Jang

IPC: G03H1/08 ,  G03H1/22 ,  G06F3/01 ,  G03H1/02 ,  G03H1/00

Abstract: An optical device includes a light source configured to provide a light beam. The optical device includes a light source configured to generate a light beam, and a spatial light modulator (“SLM”) configured to modulate the light beam to provide a hologram for generating a display image. The optical device includes a polarization-selective steering assembly configured to provide a plurality of steering states for the modulated light beam. The optical device includes an image combiner configured to focus the modulated light beam steered by the polarization-selective steering assembly to generate an array of spots at an eye-box of the optical device.

公开(公告)号：US11561402B2

公开(公告)日：2023-01-24

申请号：US17218798

申请日：2021-03-31

Applicant: Meta Platforms Technologies, LLC

Inventor： Andrew Maimone ,  Oleg Yaroshchuk

IPC: G02B27/01 ,  F21V8/00 ,  G09G3/00

Abstract: A system is provided. The system includes a waveguide configured to guide an image light to propagate inside the waveguide. The system also includes a plurality of diffractive components coupled to the waveguide and switchable between operating in a diffraction state to direct the image light from the waveguide to an eye-box of the system, and operating in a non-diffraction state to transmit a light from a real-world environment to the eye-box. The system further includes a controller coupled with the plurality of diffractive components and configured to switch each of the plurality of diffractive components between operating in the diffraction state during a virtual-world subframe of a display frame and operating in the non-diffraction state during a real-world subframe of the display frame.