Nonimaging optical illumination system

摘要

A nonimaging illumination optical device for producing a selected far field illuminance over an angular range. The optical device includes a light source, a light refracting medium means, and a family of light edge rays defined along a reference line with the refracting medium means defined in terms of the reference line as a parametric function R(t) where t is a scalar parameter position and R(t) = k(t) + Du(t) where k(t) is a parametErization of the reference line and D is a distance from a point on the reference line to the refracting medium means along the desired edge ray through the point.