A laser light source; a light sending lens configured to form laser light emitted from the laser light source into a spot shape; a scanner configured to perform irradiation while performing scanning, with the laser light formed into the spot shape, in a horizontal direction and a vertical direction of an area to be measured; a light receiving lens configured to receive reflected light reflected from the area to be measured; a light receiving optical system configured to condense the reflected light received by the light receiving lens, in each of the horizontal direction and vertical direction; and an information generating unit configured to generate, based on a received signal output by the light receiving element, three dimensional information of the area to be measured.