Patent ID: 6078443
Filing Date: 2000-06-20
Classification: F21S,F21V,G02B

Abstract:
A rotary disk adapted to be disposed in an image-changing light device which includes a box-like container for mounting the disk therein, an electric motor mounted in the container so as to rotate the disk, and a light emitting unit mounted in the container for permitting passage of a light beam emitted from the light emitting unit through the disk, the disk comprising:a metal disk body including two disk halves coupled detachably with each other, each of the disk halves being pressed to form a circle of angularly spaced recess units and being punched to form a circle of openings through the disk half, each of the recess units being defined by a bottom wall unit through a portion of which a corresponding one of the openings is formed so that the light beam emitted from the light emitting unit can pass through said openings when the disk rotates; anda plurality of colored lenses, each of which is clamped between the bottom wall units of the disk halves in such a manner that a portion of the lens is fitted within a corresponding one of the recess units of one of the disk halves while another portion of the lens is fitted within a corresponding one of the recess units of the other one of the disk halves, the light beam emitted from the light emitting unit passing through the lenses at different times during rotation of the disk body.