Device for achieving illumination effect, especially in aquarium, has optics that convert light beam to inhomogeneous form to cause sun-ring effect when incident on especially moving water surface

摘要

The device is in the form of an optical arrangement (10) in the beam path of a light source (11) that emits a homogenous light beam that converts the homogenous light beam into an inhomogeneous form, which causes a so-called sun-ring effect when incident on an especially moving water surface (12). The optical arrangement converts a straight wavefront (13) into a non-straight wavefront (13') with mutually inclined light beams.