DEVICE FOR CONTROLLING OPTICAL OUTPUT IN LOCAL AREA INFRARED WIRELESS COMMUNICATION SYSTEM

摘要

PURPOSE: A device for controlling an optical output in a local area infrared wireless communication system is provided to array micro lenses in front of a light source of an optical wireless transmitter, and to convert light sources having small light emitting areas into multiple light sources by each micro lens in order to distribute the intensity of light sources to retinas, thereby increasing a transmission distance by using a high power light. CONSTITUTION: A signal converter(111) modulates inputted signals and outputs amplified electric signals to a laser driver(112). The laser driver(112) converts the electric signals outputted from the signal converter(111) into optical signals, and outputs the converted optical signals to a micro lens arranger(113). The micro lens arranger(113) converts the optical signals or point light source signals outputted in the laser driver(120) into multiple light source signals. The multiple light source signals converted in the micro lens arranger(113) are transmitted to a receiver(130) by passing a free space(120).