The present invention relates to the use of tachykinin antagonists, including substance P antagonists and other neurokinin antagonists, in the treatment of emesis. After providing an antenna correlation matrix for all antennas with regard to a mobile terminal, the antenna array is virtually partitioned into two or more sub-arrays based on the antenna correlation matrix such that correlations among antennas within each sub-array are higher than correlations among antennas belonging to different sub-arrays. By this, a loss of a propagated light 7 at a bent portion 10 is reduced, and the propagated light 7 can be condensed to a minute aperture 5, so that near-field light can be efficiently emitted from the minute aperture 5. A displacement member displaces a portion of the profiled elements away from the remainder of the profiled elements.