Optical illumination device
US4279089A · kind A · utility
Inventor
Key dates
| Filing date | Sep 6, 1979 |
| Grant date | Jul 21, 1981 |
| Priority date | — |
| Expiry date | Sep 6, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S385/901
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
This invention relates to an optical illumination device using optical fiber members. Basically, one of the respective ends of optical fiber members is opposed to a light source, with a filter disposed between the one end and the light source, the filter being movable across the path of incident light from the source to cause the other ends of the optical fiber members to illuminate with varying colors. In such basic arrangement, the optical illumination device of the invention is characterized in that the illuminating end side of a number of optical fiber members is disposed along the lateral surface of a significant-form representing member which represents a letter, figure or the like, so that the illuminating end surfaces of the optical fibers are positioned at the end edge of the significant-form member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.