Director spatial distribution near a small spherical particle is calculated for the case of weak director anchoring with the particle surface. The differential cross-section of the light scattering by the director inhomogenuity near the particles is calculated in dipole approximation. We use the Percus - Yevick approximation for hard spheres to account for interference effects. It is studied the influence of the external ac electric field on the director profile and magnitude of light scattering cross-section.