Patent ID: 7446294

Claim:
A method for making an image sensor array, comprising: providing a substrate having first, second, and third image sensors located therein; forming first, second, and third filters proximate to the first, second, and third image sensors, respectively; and forming first, second, and third microlenses aligned to the first, second, and third filters and first, second, and third image sensors, respectively; wherein the first microlens has a larger effective area than the second microlens, wherein the second microlens has a larger effective area than the third microlens, wherein the first and second microlenses are adjacent each other, wherein the second microlens is next to the third microlens, and wherein there is a gap between the second and third microlenses, and wherein at least one of the steps of forming the three microlenses includes utilizing optical proximity correction differently on first, second and third mask areas corresponding to the first, second, and third microlenses, respectively, and wherein the optical proximity correction is used to define the gap between the second and third microlenses.