Invention Grant
- Patent Title: Liquid crystal reflective polarizer and pancake lens assembly having the same
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Application No.: US16820695Application Date: 2020-03-16
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Publication No.: US11269131B2Publication Date: 2022-03-08
- Inventor: Fenglin Peng , Junren Wang , Yuge Huang , Lu Lu , Yusufu Njoni Bamaxam Sulai , Ying Geng , Jacques Gollier , Barry David Silverstein , Yu-Jen Wang , Yun-Han Lee
- Applicant: Facebook Technologies, LLC
- Applicant Address: US CA Menlo Park
- Assignee: Facebook Technologies, LLC
- Current Assignee: Facebook Technologies, LLC
- Current Assignee Address: US CA Menlo Park
- Agency: Millburn IP PLLC
- Main IPC: F21V8/00
- IPC: F21V8/00 ; G02F1/13363 ; G02F1/1335 ; G02B5/30 ; G02F1/13357

Abstract:
An optical device is provided. The optical device includes a first optical element configured to output an elliptically polarized light having one or more predetermined polarization ellipse parameters. The optical device also includes a second optical element including a birefringent material with a chirality, and configured to receive the elliptically polarized light from the first optical element and reflect the elliptically polarized light as a circularly polarized light.
Public/Granted literature
- US20210286124A1 LIQUID CRYSTAL REFLECTIVE POLARIZER AND PANCAKE LENS ASSEMBLY HAVING THE SAME Public/Granted day:2021-09-16
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