| 摘要 |
<p>A laser irradiator L_N (N: 1 to 4) is arranged in an automobile and radiates a laser beam obliquely downward. A camera C_N arranged on the automobile has a viewing field VW_N corresponding to a radiating direction of the laser irradiator L_N. A CPU determines whether or not a change amount of a reflection position of the laser beam radiated by the laser irradiator L_N exceeds a reference, based on output of the camera C_N. The radiating direction of the laser irradiator L_N is changed by the CPU when a determined result is updated from a negative result to a positive result. A manner of changing in the reflection position of the laser beam radiated by the laser irradiator L_N is detected by the CPU based on the output of the camera C_N parallel to a changing process for the radiating direction. The CPU outputs a different notification corresponding to the detected result toward a driver of the automobile.</p> |
