Laser diodes based illumination device
US9772074B1 · kind B1 · utility
0Cited by
9References
19Claims
0Family size
Inventor
Key dates
| Filing date | Nov 1, 2016 |
| Grant date | Sep 26, 2017 |
| Priority date | — |
| Expiry date | Dec 9, 2036 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21Y2115/30
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An illumination device includes a bulb including a segment of at least second order curvature and a cylindrical segment. A least two laser diodes are coupled with the bulb such that laser beams emitted by the at least two laser-diodes propagate inside the bulb through total internal reflection. The laser beams propagating in the bulb expand in the bulb, are evenly mixed and exceed outward from the bulb as a volumetric light flux.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.