| 摘要 |
PROBLEM TO BE SOLVED: To provide an obstacle detection sensor with high detection sensitivity even for an obstacle being close to a light emitting device.SOLUTION: The obstacle detection sensor captures an image of light from light emitting devices 3 by a camera 4 that is spaced from the plurality of light emitting devices 3 aligned at predetermined intervals, with a monitoring area located therebetween, and detects presence of an obstacle 7 between the camera 4 and the light emitting devices 3 using a change in luminance data of an image signal obtained by the camera 4. The obstacle detection sensor includes non-translucent partition plates 8, between adjacent light emitting devices 3, which protrude from light emitting planes of the light emitting devices 3 so as to expand a detection area of the obstacle with small diameter required to be detected. |
