Abstract: A camera actuator comprises: a housing; a driving unit which is loaded in the housing, and which includes a vibration generator generating vibration from an input power source and a shaft vibrating in a first direction by means of the vibration generated by the vibration generator; an optical unit, which implements zoom and auto focusing while being driven in the first direction in the housing by means of the vibration of the shaft; and a frictional movement unit for connecting the shaft and the optical unit to transfer the first directional vibration of the shaft to the optical unit.

Abstract: This WIG craft has a configuration of tandem/canard type, comprising: a body; a front wing having a relatively small aspect ratio, as installed in the lowest portion of the fore half of the body; and a rear wing having a longer span and a shorter chord length than the front wing, as installed in the rearmost portion of the body. Since the front wing, which is also used for planing, is not fixed directly to the body, but installed through a suspension system, so as to travel up and down while planing along the rough water surface, the WIG craft can take off and land stably even in high waves, and further cruise at a extremely low height safely without worrying about the impacts of the wave.

Abstract: This WIG craft has a configuration of tandem/canard type, comprising: a body; a front wing having a relatively small aspect ratio, as installed in the lowest portion of the fore half of the body; and a rear wing having a longer span and a shorter chord length than the front wing, as installed in the rearmost portion of the body. Since the front wing, which is also used for planing, is not fixed directly to the body, but installed through a suspension system, so as to travel up and down while planing along the rough water surface, the WIG craft can take off and land stably even in high waves, and further cruise at a extremely low height safely without worrying about the impacts of the wave.