Patent ID: 8451541

Claim:
A method comprising manufacturing a vehicle windshield comprising an outer surface and an inner surface, the outer surface and the inner surface forming a wedge angle with each other in one or more regions for prevention or reduction of interfering double images, wherein the outer surface and the inner surface have continuously changing wedge angles, the wedge angles depending on a respective local angle of incidence of light beams and on a respective local radius of curvature of the curved vehicle windshield, wherein compensation wedge angles δ required for compensation of double images interfering in transmission are calculated depending on local angles of incidence φ and local radii of curvature R c of the windshield according to the formula δ = t R c · sin ⁢ ⁢ φ ⁢ ⁢ cos ⁢ ⁢ φ n 2 - sin 2 ⁢ φ , where t represents the thickness of the windshield and n represents the index of refraction, along the vertical center line of the windshield.