Patent ID: 7597453

Claim:
A luminaire for providing broad uniform surface illumination and sharp cutoff comprising: a stack of at least two separate light projecting modules sharing a common optical axis, each said module projecting an off-axis radial beam onto a surface; each said module including a quasi point light source which is an LED mounted to a heat sink, each said LED partially surrounded by a radially collimating optic gathering and projecting light from said LED and projecting it as a radial beam onto a ring-shaped optic disposed outwardly from said collimating optic so as to redirect the light rays of said radial beam away from said luminaire onto said surface, wherein said ring-shaped optic is a ring-shaped reflector and each ring-shaped reflector reflecting a canted radial beam through said optical axis, and, other than the end-most ring-shaped optic, at a point between each said quasi point light source; the type and configuration of said radially collimating optic and said ring optic in relationship to each other within any two of said modules is such that the beam configuration of said canted radial beam projected by each of said modules is different from the other module.