Patent ID: 7344264

Claim:
A rotating apparatus for frightening an animal by illuminating a collimated light against the animal along the rotating axis of the rotating apparatus, comprising: a rotating body having the rotating axis; a bulk-shaped lens for condensing light along an optical axis co-axial with the rotating axis, wherein the bulk-shaped lens is disposed at a tip of the rotating body and rotates with the rotating body, the bulk-shaped lens comprising: a bulk-shaped lens body identified by a top surface, a bottom surface and a contour surface, the center of the top and bottom surfaces defining the optical axis in a direction from the bottom surface to the top surface; and a well-shaped cavity implemented in the inside of the lens body, aligned along the optical axis, allocated at a backside of the lens body, and a semiconductor light-emitting element for emitting the light, installed in the cavity, wherein a ceiling surface of the cavity serves as a main entrance surface, an inner wall portion of the cavity other than the ceiling surface serve as an effective entrance surface, the top surface of the lens body serves as an exit surface for defining a divergence angle of the light along the optical axis, and outer diameter of contour surface of the bulk-shaped lens is larger than three times and smaller than ten times of inner diameter of the cavity, and the bulk-shaped lens rotate with the rotating body.