公开(公告)号：US20250164797A1

公开(公告)日：2025-05-22

申请号：US18937002

申请日：2024-11-04

Applicant: Meta Platforms Technologies, LLC

Inventor： Robert UPTON ,  Jacques GOLLIER ,  Fenglin PENG

IPC: G02B27/01

Abstract: An illumination system for a non-emissive display panel is provided. The illumination system includes a light source array including a plurality of individually addressable illumination units, an illumination unit being configured to emit a first light beam having a first solid angle. The illumination system also includes a concentrator array coupled with the light source array and including a plurality of concentrators, a concentrator being configured to condition the first light beam into a second light beam associated with a second solid angle that is smaller than the first solid angle, the second light beam providing a substantially uniform illumination at an exit aperture of the concentrator. The illumination system also includes an imaging assembly including one or more optical elements configured to image the substantially uniform illumination at the exit aperture of the concentrator onto the non-emissive display panel.