Multi-lens LED-array optic system
US9255686B2 · kind B2 · utility
3Cited by
138References
84Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 6, 2012 |
| Grant date | Feb 9, 2016 |
| Priority date | — |
| Expiry date | Dec 30, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10H20/853
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Lighting apparatus having a first lens over the LED emitter and a second lens over the first lens, and including: a first optical surface which is a first-lens outer surface configured to refract light from the emitter; a second optical surface which is a second-lens inner surface spaced from the first optical surface; and a third optical surface which is a second-lens outer surface configured to refract light from the second optical surface toward a preferential side. One embodiment includes asymmetric primary and secondary lenses.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.