TRANSCEIVER FOR FREE SPACE WIRELESS OPTICAL COMMUNICATION AND APPLICATION UNIT THEREOF

摘要

PURPOSE: A transceiver for free space wireless optical communication and an application unit thereof are provided to stably and effectively provide a composite multimedia communication service at a high speed and by large capacity. CONSTITUTION: An LD(Laser Diode)(110) transmits light bearing a radio optical communication signal to a free space outside a transmitter(100). A PD(Photodetector)(120) detects light coming from the LD(110). A light source driving and control circuit(130) outputs a desired signal by driving the LD(110). An optical system(140) includes a lens(141) and a lens holder(142). As the lens(141), an aspheric lens or a Fresnel lens can be used. The lens holder(142) is formed to control a position of the lens(141) forward and backward in the optical system(140).