Device presence detection of objects.

Device presence detection of objects, of the type mounted in a motor vehicle, having at least one blind spot, where the detection device is for detecting an object in the blind spot and comprises: a receiver suitable for detecting electromagnetic waves, with a focusing device, and a photosensor which converts said received electromagnetic waves into electrical signals, an electronic circuit that converts the electrical signals into digitalised signals, a logic circuit that analyzes the digitalised signals to analyze the presence of objects in the blind angle with a movement relative to the vehicle, and emits variable output signals according to the result of the analysis, [d] indicator elements activated by the output signals, that can be perceived by the driver .