Detection device has oblique plane of obstacles and method of detection using a device such

The invention relates to a detection device (10) of barriers intended to equip a mobile vehicle (11) having a preferred direction of movement in a first direction along an axis X parallel to a reference plane (12), characterized in that it comprises: • a transmitter said shovel (32) of an electromagnetic beam said shovel (27) extending in a virtual plane said shovel (26) configured to intersect with the reference plane (12) in a line perpendicular to the X axis, • a first image sensor (5) adapted to produce an image of the right, • an image analyzing means adapted to determine the presence of an obstacle by detecting a deformation from the right. The invention also relates to a detection method employing such a device.