Patent ID: 7331692

Claim:
A light beam projector comprising a light source and a reflecting means, which are so arranged to have the light generated by the light source converging into a light beam, said reflecting means having a hollow curved surface and a focal point located where the light source is positioned; filtering means of the light beam, being able to change the colour of said light beam based on the angle of incidence of the beam on said filtering means, said filtering means comprising a plurality of filters arranged by sectors to form a diaphragm interposing between said light source and the light beam outlet from the projector, where in order to change the angle of incidence of the light beam on said filters, said sectors rotate on their own axis, to move from a closed position, in which they fully intercept the light beam, to an open position, in which they do not intercept such a light beam, as well as to all intermediate positions; wherein said light beam projector provides at least two filtering systems; one of them comprising at least one of said diaphragms, placed one after the other along the path of the light beam, and that each sector forming said diaphragms rotated independently from the position of the other one or other remaining sectors.