Light-emitting diodes with optical filters
US11326763B1 · kind B1 · utility
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20Claims
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Key dates
| Filing date | Jan 31, 2020 |
| Grant date | May 10, 2022 |
| Priority date | — |
| Expiry date | Jan 31, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10H20/84
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Methods and apparatus for fabricating light-emitting diodes (LEDs) that include polarizing or wavefront-altering optical components are described in which additional optical components are added to the LED package to filter or modify the polarization of the emitted photons. Packaged LEDs that include polarizing or wavefront-altering optical components are also described. The packaged LEDs may emit infrared light that is polarized or otherwise altered by the optical components added during the fabrication process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.