eng Science and Education Publishing American Journal of Vehicle Design 2018-05-15 4 1 11 15 10.12691/ajvd-4-1-2 AJVD2018412 article Yizong He yizonghe@126.com 1 Department of Electrical and Computer Engineering, University of Minnesota, Minneapolis, MN 55455, USA A hollow quadrilateral prism consists of four rigid right triangular prisms laid asymmetrically in a V-like shape. Each triangular prism has a base face which is an obtuse scalene triangle, and the front and rear lateral faces are covered with a reflective material of visible light. The front and rear lateral faces of the four right triangular prisms face each other forming an asymmetrical channel between them, which is filled with a transparent material. The hollow quadrilateral prism reflects incident light in sequence by the reflective lateral faces of right triangular prisms. It is configured to make a good portion of the frame invisible to the driver of an automobile and renders driving safer and more comfortable. http://pubs.sciepub.com/ajvd/4/1/2/ajvd-4-1-2.pdf stealth technology camouflage technology automobile industry A-pillar of vehicle quadrangular prism quadrilateral prism