Autonomous cleaner

A robot cleaner comprising:

• a cleaner body including a plurality wheels and a controller that manages driving of at least one wheel of the plurality of wheels;
• a cleaner head protruding from a front of the cleaner body, the cleaner head having an intake port to suction air containing foreign substances;
• and
• a sensor assembly attached to the front of the cleaner body,
• wherein at least one portion of the sensor assembly vertically overlaps with the cleaner head protruding from the front of the cleaner body,
• wherein the sensor assembly includes:
• a sensor oriented in an inclined angle relative to side and top surfaces at an upper corner portion of the cleaner body to capture an image of a front space and an upper space, which are in front of the cleaner body;
• and
• a sensor module provided adjacent to the side surface of the cleaner body to sense at least one of an obstacle in front of the cleaner body or a vertical drop located in front of the cleaner body,
• wherein the sensor module includes:
• a first laser emitting a first laser beam toward a front lower region, which is in front of the cleaner body;
• a second laser emitting a second laser beam toward a front upper region, which is in front of the cleaner body;
• and
• a camera configured to photograph the first and second laser beams within a prescribed photographing area, the camera being located at a bottom of the sensor module,
• wherein the sensor, first laser, the second laser, and the camera are sequentially positioned and vertically aligned at the side of the cleaner body, and
• wherein a distance between the first laser and the camera is greater than a distance between the second laser and the camera.