Apparatus for coupling light into lightguides
US10386571B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 26, 2016 |
| Grant date | Aug 20, 2019 |
| Priority date | — |
| Expiry date | Mar 10, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/0088
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A system of light emitting diodes and lightguides can produce and distribute light in a luminaire. Two or more lightguides can be mounted adjacent one another so that their edges extend alongside one another. An optic can couple light between the light emitting diodes and the edges of the adjacent lightguides. The optic, which can be another lightguide in some examples, can mix, blend, or homogenize light received from the light emitting diodes and distribute the light among the adjacent lightguides. The optic can mix light emitted from multiple light emitting diodes so that light enters the adjacent lightguides uniformly along the edges of the lightguide, thereby eliminating or reducing any bright spots or visual inconsistencies. The optic can further allocate light uniformly among the adjacent lightguides.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.