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.