Lighting fixture with integral motion detector
US5282118A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 21, 1992 |
| Grant date | Jan 25, 1994 |
| Priority date | — |
| Expiry date | Dec 21, 2012 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S362/802
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A lighting fixture with infra-red responsive motion detector unit incorporated into the fixture design. The lighting fixture includes a motion detector housing forming an integral part of the lighting fixture body and having a generally convexo-convex shape fitting in with the decorative styling of the fixture body. The bottom portion of the housing has an upwardly curving bottom wall containing an azimuthally extending lens aperture. A plastic lens member is positioned in the lens aperture and is formed to conform to the curvature of the convex bottom wall so that the lens member appears to form a continuous portion of the wall. The lens member defines a plurality of Fresnel lenses which are disposed to direct infra-red radiation from an object in their aggregate field of view to an infra-red sensor mounted within the housing. The housing is incorporated into the body of the lighting fixture itself, instead of being mounted on a separate mounting base, and is disposed on the lighting fixture such that no other portion of the lighting fixture obstructs the aggregate field of view of the plurality of Fresnel lenses.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.