Invention Grant
- Patent Title: Liquid crystal half-wave plate lens
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Application No.: US16355490Application Date: 2019-03-15
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Publication No.: US10705262B2Publication Date: 2020-07-07
- Inventor: Jianru Shi , Mary Lou Jepsen
- 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: Morgan, Lewis & Bockius LLP
- Main IPC: G02F1/29
- IPC: G02F1/29 ; G02B3/00 ; G02B27/01 ; G06F1/16 ; G06F3/01

Abstract:
A lens includes immobilized liquid crystals. The liquid crystals in a first region are aligned in a first orientation. The liquid crystals in a second region, located between the first region and a third region and adjacent to the first region and the third region, are aligned in a second orientation that is distinct from the first orientation. The liquid crystals in the third region, located between the second region and a fourth region and adjacent to the second region and the fourth region, are aligned in the first orientation. The liquid crystals in the fourth region, located adjacent to the third region, are aligned in the second orientation. A device with the lens and an array of light emitting devices is also disclosed.
Public/Granted literature
- US20190212477A1 Liquid Crystal Half-Wave Plate Lens Public/Granted day:2019-07-11
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