Invention Publication
- Patent Title: KALEIDOSCOPIC WAVEGUIDE AS SMALL-FORM-FACTOR PUPIL EXPANDER
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Application No.: US18518357Application Date: 2023-11-22
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Publication No.: US20240168299A1Publication Date: 2024-05-23
- Inventor: Xingzhou TU , Wai Sze Tiffany LAM , Wanli CHI , Miaomiao XU
- Applicant: Meta Platforms Technologies, LLC
- Applicant Address: US CA Menlo Park
- Assignee: Meta Platforms Technologies, LLC
- Current Assignee: Meta Platforms Technologies, LLC
- Current Assignee Address: US CA Menlo Park
- Main IPC: G02B27/01
- IPC: G02B27/01

Abstract:
A waveguide display includes a first waveguide assembly and a second waveguide assembly. The first waveguide assembly includes a first waveguide extending in a first direction, a first input coupler configured to couple display light into the first waveguide such that the display light is reflected through total internal reflection by three or more surfaces of the first waveguide that are parallel to the first direction to propagate within the first waveguide in the first direction, and a first output coupler configured to couple the display light out of the first waveguide at a first plurality of locations along the first direction. The second waveguide assembly is configured to deflect, at a second plurality of locations along a second direction different from the first direction, the display light from the first waveguide towards an eyebox of the waveguide display.
Information query