公开(公告)号：US20240036316A1

公开(公告)日：2024-02-01

申请号：US17874211

申请日：2022-07-26

申请人： Meta Platforms Technologies, LLC

发明人： Chulwoo OH ,  Hyunmin SONG ,  Junren WANG ,  Lu LU ,  Sawyer MILLER ,  Stefanie TAUSHANOFF ,  Yun-Han LEE

IPC分类号： G02B27/01 ,  G02B5/30 ,  G02B27/28

CPC分类号： G02B27/0172 ,  G02B5/3016 ,  G02B27/286 ,  G02B2027/0178

摘要： A Pancharatnam-Berry phase (PBP) lens includes a substrate and one or more liquid crystal material layers on the substrate. The one or more liquid crystal material layers include a plurality of zones at different distances from a center of the PBP lens, where different zones of the plurality of zones of the one or more liquid crystal material layers have different liquid crystal twist angles along a surface-normal direction of the substrate and different phase delays for surface-normal incident light. The PBP lens can have an f-number less than 1, and can be used in a near-eye display system to project display images to an eye of a user at an efficiency greater than 75% at a peripheral region of the PBP lens.