Lamp reflector assembly
US4686612A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 25, 1985 |
| Grant date | Aug 11, 1987 |
| Priority date | — |
| Expiry date | Oct 25, 2005 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21W2131/406
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A reflector assembly for projecting a beam of light along an optical axis, the assembly including an enclosure having an aperture for projecting the beam of light and a source of light mounted within the enclosure. A reflecting mirror is disposed within the enclosure and arranged to move axially with respect to the optical axis of the beam of light between positions adjacent the aperture and remote from the aperture. A plurality of reflector segments are disposed between the movable reflector and the aperture in the enclosure, the segments each being defined as a portion of a cone or cylinder and with gaps therebetween arranged so as to permit the passage of air between the segments.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.