Direct-indirect luminaire with improved down light control
US5884994A · kind A · utility
56Cited by
3References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 4, 1996 |
| Grant date | Mar 23, 1999 |
| Priority date | — |
| Expiry date | Dec 4, 2016 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21Y2103/00
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A direct-indirect luminaire is provided with a direct light control structure between the luminaire's light source and the down light openings in the luminaire's housing. The down light control structure has an interior light capture which extends to meet the light source and which is shaped to substantially conform to the shape of a capturable surface of the light source. The down light control structure captures and directs substantially all of the light emitted from the captured portion of the light source through the housing's down light opening to provide improved control over the down light component of the luminaire.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.