Vortex linearization of micro-LED polarization
US10712579B1 · kind B1 · utility
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6References
15Claims
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Key dates
| Filing date | Sep 18, 2018 |
| Grant date | Jul 14, 2020 |
| Priority date | — |
| Expiry date | Sep 22, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10H20/0363
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A vortex polarizer converts light having azimuthal polarization emitted at a light emitting surface of a light emitting diode (LED) into a converted light having linear polarization. The vortex polarizer includes a distribution of fast axes that vary as a function of azimuth angle. Each fast axis rotates a portion of the light having the azimuthal polarization to a portion of the converted light having linear polarization. The vortex polarizer may include linear photoalignment polymer (LPP) aligned to define the distribution of fast axes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.