Patent ID: 7379130

Claim:
An electro-optical system comprising: a light source; a Hetero Polar Light Guide (HPLG) coupled to the light source and having a first region and a second region, wherein the first region outputs a first light substantially comprising a first polarization state, and the second region outputs a second light substantially comprising a second polarization state, wherein the first light and the second light is output in approximately the same direction and the first polarization state is different than the second polarization state; and a polarization modifying light intensity modulation layer coupled to the hetero polar light guide having a third region and a fourth region; wherein the third region accepts polarized light aligned in a first direction and the fourth region accepts polarized light aligned in a second direction; and the third region is substantially aligned with and approximately the same shape and size as the first region, and said fourth region is substantially aligned with and approximately the same shape and size as the second region.