Secondary light distribution lens for multi-chip semiconductor (LED) lighting
US8740417B2 · kind B2 · utility
16Cited by
2References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 1, 2011 |
| Grant date | Jun 3, 2014 |
| Priority date | — |
| Expiry date | Nov 22, 2032 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21Y2115/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A lens comprising: a lens body; a total reflection surface provided on an outer side of the lens body, the reflection surface being in the form of a scalelike polyhedron; a recess formed on a bottom side of the lens body at a central region thereof for accommodating a LED, the recess having a side surface and a central surface; a micro lens array formed at the central surface of the recess; and a light-emitting surface provided at a top side of the lens body; wherein a substantially uniform circular light spot is formed by the lens.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.