Provided is a light detection and ranging (LIDAR) device. The LIDAR device includes: a light source configured to emit a first light beam; a photodetector configured to detect a second light beam, the second light beam being a reflected or scattered light beam of the first light beam reflected or scattered by an object; a diverging member comprising a reflective material configured to diverge the first light beam in various directions by rotating about a rotation axis; and a converging member including an optical element including one or more of a refractive and/or reflective material configured to converge the second light beam from the object and configured to cause the second light beam to be incident on the photodetector.