On the base of a coherent emitting straight segment. the problem of approximate description of the field of an extended source in the far illumination region is considered. It is shown that in regions close to the directions of intensity maximums the source field can be approximated by mean of sphere waves. The sphericity condition in corresponding region is found. https://www.bekindtopets.com/quick-grab-Canine-Spectra-KC-3-Single-Dose-great-price/