Beam forming apparatus

Claim 1

IN A LIGHT PROJECTION SYSTEM: A LIGHT SOURCE; REFLECTING MEANS FORMED OF A GROUP OF ANNULAR SEGMENTS OF SUBSTANTIALLY ELLIPSOIDAL SURFACES, SAID SEGMENTS HAVING SUBSTANTIALLY COINCIDENT PROXIMATE AND REMOTE FOCI AND HAVING BOUNDARY EDGES DEFINED BY PARALLEL PLANES NORMAL TO THE LONGITUDINAL AXIS WHICH INCLUDES SAID FOCI; SAID SEGMENTS HAVING RESPECTIVELY DIFFERENT MEAN DIAMETERS, WITH THE SEGMENT HAVING THE SMALLEST DIAMETER BEING MOST DISTANTLY SPACED ALONG SAID AXIS FROM THE PROXIMATE FOCUS AND WITH THE SEGMENTS OF SUCCESSIVELY LARGER DIAMETERS BEING INDIVIDUALLY AXIALLY POSITIONED MORE CLOSELY ADJACENT SAID FOCUS SO THAT LIGHT FROM SAID SOURCE IMPINGING ON THE INNER SURFACE OF A GIVEN ONE OF SAID LARGER DIAMETER SEGMENTS IS REFLECTED THEREFROM, THROUGH THE INTERSTITIAL SPACE BETWEEN SAID ONE SEGMENT AND THE NEXT SMALLER DIAMETER SEGMENT, TOWARD THE REMOYR GOCUS, THE RADIAL DISTANCES FROM SAID LIGHT SOURCE TO THE MAIN DIAMETER CIRCLES OF SAID SEGMENTS ARE SUBSTANTIALLY THE SAME WHEREBY ALL OF SAID SEGMENTS ARE ILLUMINATED WITH LIGHT OF APPROXIMATELY THE SAME INTENSITY, EACH OF SAID SEGMENTS HAVING A WIDTH IN THE AXIAL DIRECTION SUBSTANTIALLY SMALLER THAN THE MINIMUM STRAIGHT LINE DISTANCE FROM THE SAME SEGMENT TO SAID LIGHT SOURCE.