Invention Grant
- Patent Title: Staircase in-coupling for waveguide display
-
Application No.: US17184312Application Date: 2021-02-24
-
Publication No.: US11709358B2Publication Date: 2023-07-25
- Inventor: Yang Yang , Wanli Chi , Wai Sze Tiffany Lam , Dominic Meiser
- 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
- Agency: Weaver Austin Villeneuve & Sampson LLP
- Main IPC: G02B27/01
- IPC: G02B27/01 ; G02B27/14 ; G06T11/60 ; A61B3/12 ; G02B27/42

Abstract:
A waveguide display includes a waveguide and a staircase structure coupled to the waveguide. The waveguide includes a first substrate, a second substrate, and a holographic material layer between the first substrate and the second substrate. The holographic material layer includes a first grating and a second grating. The staircase structure is positioned on top of at least a portion of the first grating but not on top of the second grating. The staircase structure includes an input grating that is on top of the first grating and is configured to couple display light into the waveguide. The first grating is configured to redirect the display light coupled into the waveguide by the input grating towards the second grating.
Public/Granted literature
- US20220269075A1 STAIRCASE IN-COUPLING FOR WAVEGUIDE DISPLAY Public/Granted day:2022-08-25
Information query