Patent ID: 8414135

Claim:
A reflector for a vehicle comprising: a plurality of retroreflective elements configured to retroreflect incident light obliquely upward at a prescribed angle with respect to a reference axis that is a central axis of each of the plurality of retroreflective elements, wherein the light becomes incident on the retroreflective elements parallel to the reference axis arranged along a horizontal direction, the plurality of retroreflective elements each including: a first reflection surface which is inclined at a first inclination angle ANG 1 to the reference axis; a second reflection surface which is inclined at a second inclination angle ANG 2 to the reference axis and is formed in a first position reached after the second reflection surface is rotated from the first reflection surface through a first rotational angle ROT 1 around the reference axis as a center; and a third reflection surface which is inclined at a third inclination angle ANG 3 to the reference axis and is formed in a second position other than the first position reached after the third reflection surface is rotated from the first reflection surface through a second rotational angle ROT 2 around the reference axis as the center in a direction opposite to the second reflection surface, wherein the first, second and third reflection surfaces are arranged in adjoining relation so as to substantially form corners of a cube, and the first inclination angle ANG 1 , the second inclination angle ANG 2 , the third inclination angle ANG 3 , the first rotational angle ROT 1 and the second rotational angle ROT 2 satisfy the conditions expressed below: ANG 2 >ANG 3 ; ANG 2 >ANG 1 ; and ROT 1 >ROT 2 >120 degrees.