Infrared motion sensor
US8354643B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Oct 28, 2010 |
| Grant date | Jan 15, 2013 |
| Priority date | — |
| Expiry date | Apr 16, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J5/0846
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An infrared motion sensor has a multi element IR detector with first and second separate arrays of optical elements associated with respective first and second detector elements and a partition of a material substantially opaque to IR radiation and substantially transparent to visible/NIR light arranged to separate the IR optical paths from the first and second optical elements to the respective first and second detector elements. In this way, the detector elements function individually with respect to IR radiation and individual optical elements produce separate and independently oriented fields of view on the first and second sides of the sensor, while visible/NIR light still falls on both detector elements so that detector element signals resulting from NIR radiation roughly cancel one another.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.