High efficiency automotive LED optical system
US7731401B2 · kind B2 · utility
3Cited by
2References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 11, 2007 |
| Grant date | Jun 8, 2010 |
| Priority date | — |
| Expiry date | May 2, 2028 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21Y2115/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An exterior automotive lamp may be formed with LED light sources by efficiently using the available light. The LEDs are arranged in an array to illuminate a central lens to produce the horizontal spread from the central portion of the LED beam. Meanwhile a reflector gathers the more disperse side-emitted portion of the LED beam and directs that light as an outer sheath to form a supplementary portion of the beam. The lamp efficiently provides a beam that may be adapted for highbeam, lowbeam, fog, or signal purposes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.