Multiple color light with structure to prevent color bleeding
US4839779A · kind A · utility
10Cited by
9References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 8, 1987 |
| Grant date | Jun 13, 1989 |
| Priority date | — |
| Expiry date | Dec 8, 2007 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21S41/168
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A light apparatus has a first source of light, a first surface for causing light transmitted therethrough from the first source to have a first color, a second source of light, a second surface for causing light transmitted therethrough from the second source to have a second color, and a coating on the second surface to prevent light from the first source that is transmitted through the first surface from passing through the second surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.