Omnidirectional monitoring using near-infrared electromagnetic radiation
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United States of America Patent
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May 29, 2012
Grant Date -
Nov 26, 2009
app pub date -
May 22, 2009
filing date -
May 22, 2008
priority date (Note) -
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Abstract
A monitoring device includes an imaging device sensitive to visible and near-infrared electromagnetic radiation. The monitoring device is configured to concurrently direct omnidirectional visible and near-infrared electromagnetic radiation onto the imaging device without using any moving parts. The monitoring device also can include multiple sources of near-infrared electromagnetic radiation, which can be sequentially operated to illuminate regions of a monitored area to improve the imaged data. The monitoring device can acquire additional data, such as acoustic data or identification data of a target, and can process the acquired data to detect any targets that may be present and evaluate an alarm condition.
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