Luminaire

Claim 1

A LUMINAIRE ADAPTED TO BE POSITIONED AT ONE SIDE OF A ROADWAY COMPRISING: A GENERALLY OVATE CONCAVE REFLECTOR SYMMETRICAL ON OPPOSITE SIDES OF A VERTICAL MEDIAN PLANE TRANSVERSE TO THE ROADWAY; AN OVATE BOWL-SHAPED REFRACTOR HAVING ITS OPENING FACING THE OPENING IN SAID REFLECTOR; SAID REFRACTOR HAVING PRISMATIC AREAS DEFINING REFLECTED LIGHT BEAM AREAS ON LOWER OPPOSITE SIDES THEREOF AND LIGHT SOURCE BEAM AREAS ABOVE AND ADJACENT SAID REFLECTED LIGHT BEAM AREAS; SAID REFLECTOR HAVING REFLECTED LIGHT BEAM SECTIONS ON OPPOSITE LATERAL SURFACES THEREOF FOR DIRECTING LIGHT DOWNWARD THROUGH THE VERTICAL MEDIAN PLANE INTO THE REFLECTED LIGHT BEAM AREAS OF SAID REFRACTOR, THE REFLECTED LIGHT BEAM SECTION OF SAID REFLECTOR BEING COMPOSED OF CURVED SPECULAR SURFACES WHICH ARE PARABOLIC IN HORIZONTAL AND VERTICAL CROSS SECTION, THE REARMOST OR HOUSE-SIDE PARABOLIC SURFACES OF SAID REFLECTED LIGHT BEAM SECTION HAVING A COMMON FOCUS WITHIN THE OPENING IN SAID REFLECTOR IN SAID VERTICAL MEDIAN PLANE, THE PARABOLIC SURFACES OF SAID REFLECTED LIGHT BEAM SECTION FORWARD OF SAID REARMOST SURFACES HAVING A DIFFERENT COMMON FOCUS LOCATED IN SAID VERTICAL MEDIAN PLANE ON THE REARWARD SIDE OF SAID FIRST-MENTIONED FOCUS AND SPACED HORIZONTALLY THEREFROM.