Patent ID: 7476562

Claim:
A method of forming an imaging device, comprising: providing a pixel cell array having at least one photosensor asymmetrically formed such that said at least one photosensor is spaced unequally from surrounding photosensors; patterning a first set of microlens precursors onto a substrate formed over said pixel cell array; reflowing the first set of microlens precursors under first reflow conditions; curing the first set of microlens precursors to form first microlenses; patterning a second set of microlens precursors onto the substrate; reflowing the second set of microlens precursors; and curing the second set of microlens precursors to form second microlenses, wherein the second microlenses are each positioned in a space among the first microlenses and have a shifted focal point that coincides with a photosensitive region of said at least one asymmetrically formed photosensor.