Collimator assembly
US8434892B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Mar 30, 2011 |
| Grant date | May 7, 2013 |
| Priority date | — |
| Expiry date | Apr 21, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/0036
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A flat refractive collimator assembly including a light guide and a light source, for example, an LED. The sides of the light guide defines a collimating reflective surface having a paraboloidal shape with a collimating focal point placed on the axis of the light guide. The central portion of the light guide defines a main reflective surface having a virtual focal point, which is substantially similar to the collimating focal point. The collimating reflective surface is a paraboloidal surface or is formed as a plurality of paraboloidal segments having various focal lengths and having a common collimating focal point. The collimating reflective surface can also include spread optics.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.