Detector system with adjustable field of view
US5739753A · kind A · utility
49Cited by
8References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 19, 1996 |
| Grant date | Apr 14, 1998 |
| Priority date | — |
| Expiry date | Sep 19, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S250/01
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A sensor system to turn on room lights when a person enters such room but avoids nuisance tripping of the system when a person passes near but outside of the region to be monitored. The inclusion of blinder devices which can be individually set, ahead of the sensor elements, permit the region being monitored to be tailored to the particular room or location. Adjusting levers can be used to set the positions of the blinder devices and then covered to prevent tampering with the settings of the blinder devices. Special fasteners can be used to limit access to the adjusting levers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.