Invention Publication
- Patent Title: SPATIAL POLARIZATION DISPLAY FOR VARIFOCAL SYSTEM
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Application No.: US18237332Application Date: 2023-08-23
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Publication No.: US20240184124A1Publication Date: 2024-06-06
- Inventor: Ali Altaqui , Xuan Wang , Lu Lu , Michael Escuti , Chulwoo Oh , Hsien-Hui Cheng , Jihwan Kim , Yuge Huang , Yun-Han Lee , Brian Wheelwright
- 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 ; G02B5/30 ; G02B27/09 ; G02F1/01

Abstract:
A multi-focal system includes a display pixel array, a pixelated polarization array, and a Pancharatnam-Berry phase (PBP) lens. The display pixel array includes a first display pixels generating first display light and a second display pixels generating second display light. The pixelated polarization array has first pixels and second pixels. The first pixels are aligned with the first display pixels to generate a first polarized light having a first polarization orientation. The second pixels are aligned with the second display pixels to generate a second polarized light having a second polarization orientation different from the first polarization orientation. The PBP lens is configured to focus the first polarized light having the first polarization orientation to a first focal length and focus the second polarized light having the second polarization orientation to a second focal length that is greater than the first focal length.
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