Patent ID: 7532153
Filing Date: 2009-05-12
Classification: G01S,H01Q

Abstract:
1. A velocity sensor configured so as to be installed on a movable body and comprising: a sensor circuit unit to generate a transmission signal having wave characteristics, receiving a reflection signal of the transmission signal reflected from an object, and generating and outputting a signal required for calculating a relative speed between said movable body and said object according to the reflection signal received and the transmission signal; a dielectric lens to modify the irradiation angle of the transmission signal generated by said sensor circuit unit, said dielectric lens being formed by a first dielectric lens and a second dielectric lens arranged separately from said first dielectric lens; and an adjustment mechanism to adjust the position of at least one of said first and second dielectric lenses in said velocity sensor, wherein said sensor circuit unit includes a substrate, an integrated circuit device mounted on said substrate, a transmission antenna electrically connected to said integrated circuit device and emitting said transmission signal, and a reception antenna electrically connected to said integrated circuit device and receiving said reflection signal; and wherein said transmission signal is an electromagnetic wave and said dielectric lens is configured in such a manner that the focal distance of the electromagnetic wave is modifiable.