Apparatus and method for receiving light from a point-like source and emitting light over an extended surface area
US8147099B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 27, 2008 |
| Grant date | Apr 3, 2012 |
| Priority date | — |
| Expiry date | Oct 11, 2029 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21Y2115/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method and apparatus are disclosed for receiving light from one or more light sources, each of which comprises a substantially point-like light source. The received light is them emitted over an extended surface area including a first surface of an optical controller arranged to refract light received from at least one light source, a second surface of the optical controller arranged to reflect the light received from the first surface of the optical controller, the first surface and the second surface being arranged with respect to each other to enable total internal reflection of the light reflected from the at least one light surface, and a plurality of reflection elements located within the optical controller arranged to alter the path of the light traversing the optical controller so as to direct light out of the optical controller.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.