Lamp module and lighting device comprising such a lamp module
US8042967B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 10, 2007 |
| Grant date | Oct 25, 2011 |
| Priority date | — |
| Expiry date | Jul 12, 2028 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21Y2115/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention relates to a lamp module (10) comprising at least one light emitting diode (LED) chip (12) for emitting light, means (13, 15, 16, 17) for extracting and shaping the light emitted from the chip(s), and a base (21) for allowing the lamp module to be fitted and connected to a lighting device. The lamp module is characterized by at least one electrically switchable cell (22) adapted to receive light emitted from the LED chip(s), which cell in a first state transmits incoming light without substantially altering the direction of the light and in a second state alters the direction of the light when the light passes the cell(s). This allows for electrically controlled adjustable beam shaping. The present invention also relates to a lighting device (30) comprising such a lamp module.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.