Luminaire with independently-controllable focus-tunable lenses
US10544921B2 · kind B2 · utility
3Cited by
7References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 2, 2017 |
| Grant date | Jan 28, 2020 |
| Priority date | — |
| Expiry date | Dec 30, 2037 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21W2131/20
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A luminaire includes multiple light emitting cells. Each light emitting cell has a light source, and a focus-tunable lens (e.g., a liquid lens) associated with the light source. Each respective one of the light emitting cells is independently controllable relative to the one or more other light emitting cells. In a typical implementation, the control of each light emitting cell may involve, for example, controlling a surface of liquid in the corresponding liquid lens.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.