Flexible light guide for membrane switch
US7888613B2 · kind B2 · utility
8Cited by
17References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 22, 2008 |
| Grant date | Feb 15, 2011 |
| Priority date | — |
| Expiry date | May 26, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01H2219/062
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In an embodiment, a membrane switch may include a flexible light guide having a first refractive index. The flexible light guide may include a first wall, an opposing second wall, and one or more additional walls. One or more of the first wall, the second wall and the additional walls may be disposed adjacent to a substance including a second refractive index that is lower than the first refractive index.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.