Incandescent visual display system having a shaped reflector
US6095668A · kind A · utility
31Cited by
29References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 19, 1996 |
| Grant date | Aug 1, 2000 |
| Priority date | — |
| Expiry date | Jun 19, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09F13/28
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A visual display sign having a lighting unit that provides high-efficiency light output from a non-point source of light. The reflector in the lighting unit is sealed and has a shaped reflecting surface obtained by generating a curve from a set of predetermined curve reference points. The shaped reflecting surface provides a light output efficiency of about 60 percent from a non-point source of light and spreads the emitted light about eight degrees from the plane of circumference of the reflector. The lighting units are attached to the visual display sign at a downward angle of about eight degrees from the horizontal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.