A door system with a door and a door sensor system for detecting a target object

The invention relates to a measuring target object (56) and angle direction optical scanning device (10), the device (10) comprises a pulse source (12), for transmitting the pulse; The other set (20), wherein for the emitting optical pulse and is connected to a scanning the plane (15) and the variable scanning direction; The photoelectric detector (42), for detecting scheduled the scanning plane (15) of the optical pulse; The receiver deflector (24), wherein for the scheduled and reflective optical pulse main orientation of the scanning plane (15) of the pulse (42) is a photoelectric detection device. The device comprises a light shielding device (32), wherein in which a cable and a (12) of the pulse supply is the other set (20) gago on line and; and from the other set (20) extends to a scanning the gago line at least partially a transmission light pulse and photoelectric detector (42) and receiver deflector (24) and gago line and extended the scanning section and a finished and receiver deflector (24) is gago line reflective optical pulse on at least partially.