| 摘要 |
In this multi-beam optical range sensor, since the diffraction grating splits output light of the light-emitting element into a plurality of beams, a plurality of beams can be outputted from the diffraction grating even with one light-emitting element. Therefore, according to this multi-beam optical range sensor, the numbers of the light-emitting elements and the light-emission side lenses can be cut down, the space on the light emission side can be reduced, and the sensor can be downsized. Also according to this range sensor, there is no need for scanning a plurality of light-emitting elements and so the detection time can be shortened.
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