公开(公告)号：US11668932B2

公开(公告)日：2023-06-06

申请号：US16735425

申请日：2020-01-06

Applicant: META PLATFORMS TECHNOLOGIES, LLC

Inventor： Lu Lu ,  Gang Li ,  Seungjae Lee ,  Mengfei Wang

IPC: G02B27/00 ,  G02B5/18 ,  G02B26/08 ,  G02B27/42 ,  G02F1/01

CPC classification number: G02B27/0081 ,  G02B5/1871 ,  G02B26/0833 ,  G02B27/0093 ,  G02B27/4233 ,  G02F1/0136

Abstract: Various embodiments set forth a foveated display system and components thereof. The foveated display system includes a peripheral display module disposed in series with a foveal display module. The peripheral display module is configured to generate low-resolution, large field of view imagery for a user's peripheral vision. The foveal display module is configured to perform foveated rendering in which high-resolution imagery is focused towards a foveal region of the user's eye gaze. The peripheral display module may include a diffuser that is disposed within a pancake lens, which is a relatively compact design. The foveal display module may include a Pancharatnam-Berry Phase grating stack that increases the steering range of a beam-steering device such that a virtual image can be steered to cover an entire field of view visible to the user's eye.