Light guide and semiconductor luminaire
US8540409B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 27, 2010 |
| Grant date | Sep 24, 2013 |
| Priority date | — |
| Expiry date | Nov 10, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/0006
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In at least one embodiment, the light guide (10) comprises a single-pieced light guide body (1). The light guide body (1) includes a transparent material and a light entrance segment (2) having a first cross-section (11) with a polygonal shape. Furthermore, the light guide body (1) includes a light output segment (4) having a second cross-section (22) with a rotund, round, circular, oval or elliptic shape. A transition segment (3) is arranged adjacent to and between the light entrance segment (2) and the light output segment (4). Along the transition segment (3), the first cross-section (11) in particular continuously changes to the second cross-section (22).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.