Polyhedron device for sensing light rays

A polyhedron device for sensing light rays and detecting incident directions of the light rays, comprising:

• a polyhedron mounting seat comprising a bottom surface, a top surface, and side surfaces, wherein the bottom surface is opposite to the top surface, and the side surfaces, located between the top surface and the bottom surface and inclined to the bottom surface, face toward different directions;
• a plurality of first light sensors respectively arranged on the side surfaces;
• and
• at least one second light sensor arranged on the top surface;
• wherein the at least one second light sensor comprises:
• a sensing unit having a first sensing area, a second sensing area, a third sensing area, and a fourth sensing area, wherein the first sensing area, the second sensing area, the third sensing area, and the fourth sensing area are respectively configured to generate a first sensing signal, a second sensing signal, a third sensing signal, and a fourth sensing signal based on an intensity of the light ray;
• and
• a mask covering the sensing unit and having an X-shaped light transmitting portion, wherein the light ray passes through the X-shaped light transmitting portion to form an X-axis light ray and a Y-axis light ray, the X-axis light ray intersects the Y-axis light ray, and an intersection of the X-axis light ray and the Y-axis light ray falls on one of the first sensing area, the second sensing area, the third sensing area, and the fourth sensing area.