Optical waveguide illumination and signage device and method for making same
US6550952B1 · kind B1 · utility
63Cited by
5References
28Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 27, 2001 |
| Grant date | Apr 22, 2003 |
| Priority date | — |
| Expiry date | Apr 27, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S385/901
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An illuminating device comprising an optical waveguide having at least one set of LEDs positioned adjacent one end surface and having a portion of the surface area treated so as to cause a portion of the light directed along the length of the waveguide to be reflected out of the waveguide through a second surface area located intermediate the length of the waveguide. Indicia may be located within the treated portion of the surface area so as to be illuminated and made visible to a viewer through the second surface area.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.