WARNING DEVICE FOR WARNING OF A COLLISION OBJECT

Disclosed is a warning device for warning an operator of a vehicle of a collision object during an operation comprising: an attention-area determination unit configured to determine an attention area, which is an area to which an attention of the operator is directed, an environment monitoring unit configured to at least partially monitor an environment around the vehicle, to determine a risk of collision for an object that is present in the monitored environment, and to detect an object as the collision object for which there is a risk of collision and which is present outside the attention area, and an output unit configured to output a warning signal when detecting the collision object.