The photic intensity distributions of biological tissues which are sensitive to light such as mesophyll cell of green plant, epidermal cell of animal, compound eye of insect are simulated with single and periodically arrayed 3-μm-diameter polystyrene spheres in water. The results show that the photic intensity distributions are very different in different cross sections of spheres. Within the section of spheres, the photic intensity distributions pressent well-regulated pattern, which out of the sphere the distributions are similar to that of lens imaging. In addition, the difference of the distributions between single and periodically arrayed spheres in cross section is obvious. The distribution of the latter presents the correlativity of spheres.