Patent ID: 6988820

Claim:
An illumination device for producing an illumination pattern with a variable shape and luminous intensity to a target, which device comprises: an optical piece that is at least partly translucent and light refracting; several light sources each producing a conical light pattern directed to the optical piece and at least partially propagating at least partially via the optical piece to the target, a position and angle of the light sources being adjustable in relation to at least one of each other and the optical piece, the light beam produced by each light source forming only a part of the illumination pattern produced by the illumination device, the shape of the illumination pattern is independent of the external shape of any optical piece to which the light sources are directed such that the illumination pattern does not resemble the external shape of the optical piece; and an electronic control unit that is electrically coupled to each light source in such a manner that the intensity of the light produced by each light source can be adjusted under the control of the control unit, the control unit comprising a control program operative to control the intensity of the light produced by each light source and to make the produced illumination pattern vivid with respect to time.