HEATING DEVICE, CAMERA SYSTEM, EXTERNAL REAR VIEW DEVICE, MOTOR VEHICLE AND HEATING METHOD

A heating device for a lens barrel of an automotive camera assembly includes a heating element adapted to apply heat along the circumference of the lens barrel, and a tension socket and/or a tension ring adapted to press a ring-shaped part of the heating element against the lens barrel circumference. A camera system, an external rear view device, and a motor vehicle, each with at least one such heating device are also described.