Lighting fixture
US5446637A · kind A · utility
25Cited by
13References
7Claims
0Family size
Inventors
Key dates
| Filing date | Jul 14, 1994 |
| Grant date | Aug 29, 1995 |
| Priority date | — |
| Expiry date | Jul 14, 2014 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21W2131/406
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An improved lighting fixture is disclosed for imaging a high-intensity beam of light at a distant location. A specially-faceted near-elliptical reflector cooperates with a gate aperture and a single aspheric lens to produce a beam that incorporates a very high proportion of emitted visible light, while the reflector has a dichroic coating that reflects only a low proportion of infrared light. The projected beam thereby has a relatively low energy density, such that the front portion of the fixture can be reduced substantially in size and weight. The gate is selectively rotatable relative to the fixture's rear housing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.