Compensation free illumination of instrument cluster display
US7575331B2 · kind B2 · utility
6Cited by
24References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 28, 2006 |
| Grant date | Aug 18, 2009 |
| Priority date | — |
| Expiry date | May 21, 2027 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60K2360/698
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An example light guide assembly for illuminating a display of an instrument cluster includes a light receiving portion, a light propagating portion and a conical surface positioned between the light receiving portion and the light propagating portion. An exterior surface of the light propagating portion includes a plurality of lobes that uniformly illuminate the display as light propagates from the light receiving portion to the conical surface and through the light propagating portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.