Abstract
In this manuscript, we present an optical time of flight and a focusing system to measure and track a reflective target, respectively. The time-of-flight and tracking system is based on the reflectance of the targets. This system uses a commercially available variable focal length lens that changes focal planes when current is applied. The optical system is mounted on a motorized stage that moves the system closer to or away from the target to be located; This is to expand the dynamic focal range of the system. The system is controlled by a specially designed LabVIEW program that controls the entire system.