Patent ID: 7070308

Claim:
A light projector for polarizing light relative to the ground for increasing visibility from a vehicle through rain, fog, film of water on the ground, comprising: a light source being supported relative to the ground; a polarized light splitter that splits a beam of unpolarized light emitted from the light source into p-polarized light and s-polarized light; and means for emitting from the vehicle a vertical polarized light, wherein the vertical polarized light comprises one of: the p-polarized light provided without reflecting in the polarized light splitter and without changing an incident direction of vibration of electric field, wherein the direction of vibration of electric field of the p-polarized light is parallel to a plane of incidence of the polarized light splitter, and the s-polarized light reflecting in the polarized light splitter with an incident direction of vibration of electric field perpendicular to the p-polarized light, wherein the direction of vibration of electric field of the s-polarized light is perpendicular to the plane of incidence of the polarized light splitter, providing a direction of vibration of electric field of the vertical polarized light that is substantially vertical to the ground, wherein if the plane of incidence of the polarized light splitter is perpendicular to the ground, then the p-polarized light comprises the vertical polarized light, and if the plane of incidence of the polarized light splitter is parallel to the ground, then the s-polarized light comprises the vertical polarized light, wherein the vertical polarized light is emitted to an area farther from the light source than a horizontal polarized light, and the horizontal polarized light is one of the p-polarized light and the s-polarized light not comprising the vertical polarized light.