Internal shield for trough-like reflector
US4531180A · kind A · utility
152Cited by
7References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 17, 1980 |
| Grant date | Jul 23, 1985 |
| Priority date | — |
| Expiry date | Dec 17, 2000 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21Y2103/00
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A lighting fixture having a trough-type reflector and further having planar end reflectors, such fixture also including at least one planar shield parallel to the long axis of the trough-type reflector and having an edge parallel to the aiming axis of the fixture. The shield is undercut to permit light emanations from the lamp to be reflected from the entire trough-type reflector. The shield also includes depending points at the points of contact with the end reflectors, thereby preventing light from being reflected from the end reflectors outside of the shield.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.