Decorative lighting fixture with adjustable range motion detector
US7438438B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 3, 2006 |
| Grant date | Oct 21, 2008 |
| Priority date | — |
| Expiry date | Aug 14, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S362/802
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A motion-activated decorative lighting fixture with a PIR motion detector having an adjustable field of view hidden behind a decorative slotted wall of the fixture body. The lighting fixture includes a motion detector housing that forms an integral part of the fixture body. The housing includes a slotted vertically extending exterior wall around the housing with an array of elongate vertically extending slots horizontally spaced apart from one another and extending along at least a portion of the wall. One or more PIR sensors are disposed within the housing, and a segmented Fresnel lens array is disposed within the housing behind the slots to direct infra-red energy from a monitored field of view to a sensor. The lens array includes a plurality of columns of lenslets, which are divided into at least two sets of columns, the columns of the first set alternating with the columns of the second set so as to form an alternating sequence of columns. At least a portion of the columns of each set have at least two lenslets disposed one above the other. Each column is aligned with a corresponding slot so as to direct infra-red energy from a monitored zone passing through the corresponding s…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.