Polarametric blind spot detector with steerable beam
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United States of America Patent
Stats
-
May 11, 2004
Grant Date -
Jan 31, 2002
app pub date -
Apr 1, 1999
filing date -
Apr 1, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A blind spot detection system includes a transmitter directing a circularly polarized signal into a blind spot adjacent a vehicle. A receiver also mounted on the vehicle receives a reflection of the circularly polarized signal which is oppositely circularly polarized. An indicator indicates to the driver of the vehicle when the reflected signal is detected, thereby indicating the presence of an object in the blind spot. An indicator is also directed toward the blind spot generating a warning when the presence of an object in the blind spot is detected and an indication of a turn or lane change by the vehicle is detected, such as turn signal switch activation.
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Cited Art Landscape
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