Patent ID: 7591559

Claim:
A light source comprising: a prismoidal housing having: (i) inclined sides of a flight of steps, each step including a riser and a tread which have an angle therebetween, and (ii) a closed smaller base and an open larger base, wherein an entire inner surface of the housing is made of an optically reflective material; and a plurality of light emitting elements arranged on the smaller base of the prismoidal housing and on respective risers of the steps of each flight such that the plurality of light emitting elements emit rays of light toward the open larger base of the housing; wherein the respective treads of the steps formed on the inclined sides of the prismoidal housing are inclined so as to be divergent relative to an optical axis of the housing toward the open larger base of the housing, the optical axis passing though centers of the smaller and larger bases of the housing; and wherein the plurality of light emitting elements are disposed such that emission axes of the plurality of light emitting elements are parallel to the corresponding inclined treads.