| 摘要 |
PROBLEM TO BE SOLVED: To detect an object staying in a wide site such as a road, intersection, crossover, airport, or other flat grounds by extending the detecting distance range to the object. SOLUTION: The object detector as an electro-optical range finder comprises a light emitting means 1 for emitting a modulated light with a modulated brightness toward an optional direction, a light receiving means for receiving a reflected light 6 of the modulated light 5 emitted to the optional direction by the light emitting means 1, and reflected by the surface of the object 11 present within the emitting range, and an information processing means 20 for detecting, when the reflected light 6 is received by the light receiving means, the presence or position of the object 11 in the emitting range based on the received information and the information of the modulated light 5 emitted by the light emitting means 1. The light receiving means has: a plurality of light receiving optical lenses 4 arranged so that the respective focal points are positioned to a common position, and the respective optical axes are turned to different positions within the emitting range; and a light receiving element 2 disposed in the common position. COPYRIGHT: (C)2004,JPO |
