| 摘要 |
PROBLEM TO BE SOLVED: To provide a laser range finder which has improved accuracy of measuring a distance and accuracy of measuring an angle and furthermore increases in the manufacturing cost and the size of which is suppressed.SOLUTION: The laser range finder comprises: an MEMS (Micro Electro Mechanical System) mirror 23 for changing the direction in which a laser beam is output; a first light-receiving unit 27 for reflecting a portion of the laser beam output in a predetermined direction and receiving the other portion; a second light-receiving unit 25 for receiving a first reflected light of the laser beam that has been reflected by an object 40 disposed outside a casing 11 and a second reflected light of the portion of the laser beam that has been reflected by the first light-receiving unit 27; and a signal processing unit 30 for subtracting, from a first distance from a laser diode 21 to the object 40 that is obtained using the first reflected light, a second distance from the laser diode 21 to the first light-receiving unit 27 that is obtained using the second reflected light, and calculating the direction of the object 40 relative to a laser range finder 10 by using the timing at which the first light-receiving unit 27 has received the laser beam. |
