Faceted parabolic-type reflector system
US4028542A · kind A · utility
101Cited by
2References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 16, 1975 |
| Grant date | Jun 7, 1977 |
| Priority date | — |
| Expiry date | Apr 16, 1995 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21V7/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A luminaire including a segmented and faceted reflector of two sections describing a concave surface but approximately describing a plurality of paraboloid surfaces of revolution. With simple repositioning of the two reflector sections, a range of reflected beam widths may be achieved. The construction of the reflector sections provides economic fabrication without material reshaping or working and hence dulling of highly reflective material, the fabrication steps including V-notching and bending in two directions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.