Aperiodic nano-optical array for angular shaping of incoherent emissions
US11294195B2 · kind B2 · utility
1Cited by
3References
27Claims
0Family size
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Key dates
| Filing date | Nov 5, 2018 |
| Grant date | Apr 5, 2022 |
| Priority date | — |
| Expiry date | Nov 5, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10H20/872
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Disclosed herein are a number of dielectric pillars, arranged to form a close-packed aperiodic array, such as a Vogel spiral, where the geometries of the aperiodic array produce azimuthally isotropic scattering of luminescence within a restricted angular cone of extraction. The aperiodic array can be formed, attached or placed on a converting material, such as, phosphor, to restrict emission to within the angular cone of extraction. The phosphor could be part of a converting illumination device, such as a phosphor coated light emitting diode, or a laser activated remote phosphor converting device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.