Light detection and ranging device and method of driving the same

A light detection and ranging (LiDAR) device comprising:

• a scanning optical system comprising a plurality of light sources and a beam steering device, the scanning optical system being configured to scan an object with a plurality of irradiation beams projected from the plurality of light sources toward the object at a plurality of irradiation angles, respectively;
• a light detector comprising a plurality of pixel regions that are configured to separately detect the plurality of irradiation beams projected toward the object at the plurality of irradiation angles and reflected from the object;
• and
• a processor configured to control the scanning optical system and the light detector, and obtain information about the object based on the plurality of irradiation beams detected by the light detector,
• wherein the processor is further configured to control the scanning optical system to select light sources from among the plurality of light sources, to be used to project the plurality of irradiation beams toward the object and to scan the object, and
• wherein the processor is further configured to set a number of the light sources to be used based on a reference period of time and an image resolution to process one image frame of the object.