Reflector for use in an artificial lighting device
US4355350A · kind A · utility
17Cited by
6References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 2, 1980 |
| Grant date | Oct 19, 1982 |
| Priority date | — |
| Expiry date | Sep 2, 2000 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21V7/04
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A reflector having a cross-sectional shape in the form of a 7th order polynomial which, when used with an artificial source of illumination of predetermined geometry, projects a beam of illumination having uniform intensity within a given solid angle. The polynomial shape is especially selected to provide a reflected, defocused source image, whose size increases with increasing angular divergence of light rays within the beam to compensate for natural losses in illumination which would otherwise occur as a function of angular divergence of light rays from the source when used without the reflector.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.