ROBOT CLEANER

The present invention relates to a robot cleaner comprising: a housing forming an outer appearance; and a sensor assembly arranged in the housing. The sensor assembly comprises: a light source for irradiating light to a front side of the housing; a camera unit including a lens; a reflector for reflecting light incident from a front side of the housing to a front side area of the lens; and a hollow guide member for guiding light incident from an upper side of the housing to a rear side area of the lens. According to the present invention, one camera unit can simultaneously play roles of an obstacle sensing sensor for sensing an obstacle and a space recognition sensor for recognizing a surrounding space of a robot cleaner, and thus the robot cleaner can be more economically produced. In addition, the position of the robot cleaner estimated on the basis of an image obtained by using the camera unit can be corrected, and thus it is possible to estimate the current position of the robot cleaner more accurately.