Camera System and Method for Observing Objects at Great Distances, in Particular for Monitoring Target Objects at Night, in Mist, Dust or Rain
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United States of America Patent
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Issued Date -
Jan 9, 2014
app pub date -
Feb 2, 2012
filing date -
Feb 4, 2011
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Abstract
A camera system and a method for the observation of objects at a large distance at night or through mist, dust, or rain, at an observation distance of 30 to 40 km, includes a pivotable target tracking mirror, a concave primary mirror with a long range, and a convex secondary mirror, which together form a reflecting telescope. The camera system also includes a Barlow lens system, an IR-sensitive image sensor arranged in the image plane of the reflecting telescope, a controllable high-speed shutter system for the image sensor, controllable IR illuminator to illuminate the object being observed by IR illumination pulses of multiple different colors, and a control device that coordinates control of the IR illuminator and of the high-speed shutter system in order to detect multispectral images captured by means of the image sensor according to a gated viewing technique.
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