公开(公告)号：US20230017964A1

公开(公告)日：2023-01-19

申请号：US17379625

申请日：2021-07-19

Applicant: Meta Platforms Technologies, LLC

Inventor： Hannah Noble ,  Yang Zhao ,  Chia-Hsuan Tai

IPC: G02F1/01

Abstract: An optical lens assembly to accept various illumination ellipticity profiles as angle of incidence (AOI) varies is provided. The optical lens assembly may include an optical stack, such as pancake optics. The optical lens assembly may also include a switchable optical element communicatively coupled to a controller. The optical lens assembly may further include an optical element, such as a Pancharatnam-Berry phase (PBP) lens, also known as a geometric phase lens (GPL). In some examples, the switchable optical element may be a switchable have wave plate, which may be configured, via application of optical power by the controller, so that the optical lens assembly may accept varying illumination ellipticity profiles as angle of incidence (AOI) increases.

公开(公告)号：US11703709B1

公开(公告)日：2023-07-18

申请号：US17165788

申请日：2021-02-02

Applicant: Meta Platforms Technologies, LLC

Inventor： Jianing Yao ,  Daozhi Wang ,  Silvio Grespan ,  Weihua Gao ,  Chia-Hsuan Tai ,  Shizhe Shen ,  John Robert Volk ,  Richard Han Soo Cho

IPC: G02F1/1335 ,  G02F1/13363

CPC classification number: G02F1/133548 ,  G02F1/133541 ,  G02F1/133638

Abstract: An optical element includes a linear polarizer layer and a transparent optical layer. The linear polarizer layer includes surfaces waviness and the transparent optical layer smooths the surfaces waves of the linear polarizer layer.