LED headlamp projection lighting device
US10648636B2 · kind B2 · utility
1Cited by
0References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 20, 2016 |
| Grant date | May 12, 2020 |
| Priority date | — |
| Expiry date | Nov 8, 2036 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21S45/48
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A lighting device includes an LED light source and a concave reflector. The light source is arranged such that light emitted is reflected by the reflector. The shield is arranged in front of the reflector. A projection lens is arranged to project light passing the shield. In order to efficiently use light emitted from the LED light source and to enable a projected illumination beam of high luminous flux, the LED light source is arranged below an optical axis L of the projection lens.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.