EMBLEM

摘要

It is possible to eliminate the constraint that no convex/concave shape can be provided on an emblem arranged on a radar wave advance route, thereby assuring degree of freedom in a design request. The emblem arranged on the advance route of a radar wave transmitted from an on-vehicle radar device is formed with a first thick portion (thickness d1) having a large thickness and a second thick portion (thickness d2) having a smaller thickness than the first thick portion. The thickness of the first thick portion is 1/2 of in-medium wavelength of the radar wave propagating inside which wavelength is multiplied by an integer. The thickness of the second thick portion is 1/2 of in-medium wavelength of the radar wave propagating in side which wavelength is multiplied by an integer. The difference between the first thick portion and the second thick portion is set to the free space wavelength of the radar wave multiplied by an integer