METHOD FOR DETECTING A DEFOCUSING OF A LIDAR SENSOR, AND LIDAR SENSOR

A method for detecting a defocusing of a LIDAR sensor. The method includes: emitting primary light as a laser line into a field of view of the LIDAR sensor using a laser emitter unit of a transmitting unit of the LIDAR sensor for scanning the field of view; receiving, using a matrix-shaped detector unit of a receiving unit, secondary light reflected and/or scattered by an object in the field of view, wherein the detector unit has a first reception area and a second reception area different from the first reception area; determining, using evaluation unit, a distance between the LIDAR sensor and an object in the field of view of the LIDAR sensor based on secondary light received in the first reception area, and ascertaining, by means of an evaluation unit, information about an extent of the defocusing based on the secondary light received in the second reception area.