| 摘要 |
PROBLEM TO BE SOLVED: To provide a laser radar that is able to detect an object in a wide range despite its simple structure.SOLUTION: When a polygon mirror PM is rotated 45 degrees from the position where it faces front, a first light receiving part PD1 on the left side is able to receive only reflection light from an object returning from a left direction after reflected by a reflecting face MR1, without receiving reflection light from the object returning from a right direction after reflected by a reflecting face MR2. Similarly, a second light receiving part PD2 on the right side is able to receive only reflection light from the object returning from a right direction after reflected by the reflecting face MR2, without receiving reflection light from the object returning from a left direction after reflected by the reflecting face MR1. |
