Optical light pipe with uniform lit intensity

A lamp assembly, the lamp assembly comprising:

• a light pipe having a proximal end, an opposing distal end, a length between the proximal end and the distal end, and a surface, the surface comprising an emitting portion and an overlay portion, wherein the light pipe is comprised of a material capable of transmitting light with a first refractive index;
• at least one light source disposed adjacent the proximal end of the light pipe and capable of generating a plurality of light rays, wherein the plurality of light rays are generally directed into the light pipe in the direction of the distal end;
• a reflective secondary surface comprising a second refractive index and a width, the reflective secondary surface disposed adjacent the overlay portion of the light pipe such that the reflective secondary surface is capable of propagating an evanescent wave at a point where any of the plurality of light rays traveling through the light pipe is internally reflected at a boundary between the overlay portion and reflective secondary surface, wherein the first refractive index is greater than the refractive index of air, and the second refractive index is greater than the first refractive index;
• a housing;
• and
• a lens, wherein the lens is disposed adjacent the housing such that the lens and housing substantially surround the at least one light source, the light pipe, and the reflective secondary surface.