Method of lighting for colored shadows
US4233654A · kind A · utility
6Cited by
5References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 24, 1979 |
| Grant date | Nov 11, 1980 |
| Priority date | — |
| Expiry date | Jan 24, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S362/806
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Beautifully and balanced colored shadows can be imparted by arranging an R unit for light sources for yellow to red; a G unit for light sources for green and a B unit for light sources for violet to blue with each predetermined space wherein each unit comprises a plurality of light sources in each group adjacent each other.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.