Luminaire

Claim 1

THE COMBINATION WITH A LUMINAIRE HAVING A LIGHT SOURCE WITH OPAQUE ELEMENTS AT EACH END AND MOUNTED ADJACENT SAID OPAQUE ELEMENTS VIA FURTHER OPAQUE ELEMENTS AT EACH END OF THE LUMINAIRE HOUSING; OF A LENS COMPRISING AN EXTENDED PIECE OF TRANSPARENT MATERIAL HAVING AN UPPER AND LOWER SURFACE AND EXTENDING SUBSTANTIALLY HORIZONTALLY BELOW THE LIGHT SOURCE AND BELOW THE OPAQUE ELEMENTS OF SAID LIGHT SOURCE AND SAID HOUSING, A PLURALITY OF LIGHT CUT-OFF PRISMS COVERING THE LOWER SURFACE OF SAID LENS AND DIRECTING LIGHT IN PRE-DETERMINED PATTERNS, A PLURALITY OF VERTICAL SURFACES FORMED IN SAID LENS INTERMEDIATE A PLURALITY OF SAID CUT-OFF PRISMS, SAID VERTICAL SURFACES OCCUPYING THE AREAS AT THE ENDS OF SAID LENS AND BELOW AND INWARDLY OF SAID OPAQUE ELEMENTS, SAID VERTICAL SURFACES RECEIVING LIGHT COMING FROM SAID LIGHT SOURCE DOWNWARDLY AND TOWARD SAID ENDS AND REFLECTING AND SCATTERING SAID LIGHT IN DIRECTIONS DOWNWARD AND AWAY FROM SAID ENDS TOWARD THE TRANSVERSE CENTER OF THE SAID LENS, THE DIRECTION OF SAID REFLECTED AND SCATTERED LIGHT BEING SUCH THAT AN OBSERVER IN A LINE OF VIEW OF SAID OPAQUE ELEMENTS, LOOKING UPWARDLY TOWARD A FAR END OF SAID LENS SEES SAID REFLECTED AND SCATTERED LIGHT INSTEAD OF SAID OPAQUE ELEMENTS.