Device for detecting objects on a windscreen of a motor vehicle
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United States of America Patent
Stats
-
Jan 11, 2005
Grant Date -
Apr 25, 2002
app pub date -
Sep 6, 2001
filing date -
Mar 6, 1999
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A device for detecting objects on a windshield of a motor vehicle having a hood includes an imaging unit having a lens and a sensor positioned within the interior of the motor vehicle. The lens images a windshield section associated with a primary field of vision onto the sensor. The sensor generates a sensor signal in response to the windshield section imaged thereon. The imaging unit is positioned in a viewing direction pointing diagonally downwards with respect to the windshield such that the background of the windshield section imaged onto the sensor is the hood of the motor vehicle thereby causing the background of the windshield section imaged onto the sensor to be approximately constant in order to cancel environmental conditions that can impair object detection on the windshield section. An evaluation unit evaluates the sensor signal to detect objects on the windshield section.
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