Patent ID: 7119735

Claim:
A vehicle-installed radar sensor system comprising: a transmission section which is disposed in a closed space formed between a permeable member provided in a vehicle and a vehicle body and transmits a radar wave to outside of the vehicle through the permeable member; a reception section which is disposed in the closed space at a distance from the transmission section and receives a reflected wave by a target through the permeable member; and a shield member which is disposed in at least one of the transmission section and the reception section, the shield member extending beyond a front edge of the at least one section with which it is disposed and extends away from the at least one section, the shield member suppressing reflecting by the permeable member of the radio wave transmitted by the transmission section when the shield member is disposed in the transmission section, the shield member suppressing reflecting by the permeable member of the reflected wave by the target when the shield member is disposed in the reception section.