Indiscernible lamp
US4656567A · kind A · utility
11Cited by
4References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 11, 1984 |
| Grant date | Apr 7, 1987 |
| Priority date | — |
| Expiry date | Oct 11, 2004 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21S43/255
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A lamp which is designed to emit light of a specified color comprises a housing having a light-transmitting front cover which is juxtaposed to a colored decorative panel. One or more optical filters are disposed within the housing. The optical filters are positioned in the housing so as to intercept light before it is emitted through the front cover. Each filter colors the light in a mixture of said specified color and a color which is complementary to that of said front cover.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.